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Seminar Report Brain Chips
INTRODUCTION
The evolution and development of mankind began thousands and thousands of
years before. And today our intelligence, our brain is a resultant of this long
developmental phase.
Technology also has been on the path of development since when man
appeared. t is man that gave technology its present form. But today,
technology is entering a phase where it will out wit man in intelligence as well
as efficiency.
!an has now to find a way in which he can keep in pace with technology, and
one of the recent developments in this regard, is the brain chip implants.
Brain chips are made with a view to enhance the memory of human beings, to
help paraly"ed patients, and are also intended to serve military purposes. t is
likely that implantable computer chips acting as sensors, or actuators, may
soon assist not only failing memory, but even bestow fluency in a new
language, or enable #recognition# of previously unmet individuals. The
progress already made in therapeutic devices, in prosthetics and in computer
science indicates that it may well be feasible to develop direct interfaces
between the brain and computers .
This technology is only under developmental phase, although many implants
have already been made on the human brain for e$perimental purposes. %et&s
take a look at this developing technology.
'
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EVOLUTION TOWARDS IMPLANTABLE BRAIN
CHIPS
(orldwide there are at least three million people living with artificial implants.
n particular, research on the cochlear implant and retinal vision have furthered
the development of interfaces between neural tissues and silicon substrate
micro probes. There have been many researches in order to enable the
technology of implanting chips in the brain to develop. Some of them are
mentioned below.
The Study of the Brain
The study of the human brain is, obviously, the most complicated area of
research. (hen we enter a discussion on this topic, the works of )*S+
+%-A* need to be mentioned. !uch of the work taking place at the /,
Stanford and elsewhere is built on research done in the '012s, notably that of
3ale physiologist )ose elgado, who implanted electrodes in animal brains andattached them to a #stimoceiver# under the skull. This device transmitted radio
signals through the electrodes in a techni4ue called electronic stimulation of
the brain, or +SB, and culminated in a now5legendary photograph, in the early
'062s, of elgado controlling a live bull with an electronic monitor 7fig5'8.
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i!"#$ A %i&ture of 'o(e De)!ado &ontro))in! a *u)) +ith the ,(ti-o&ei.er/
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According to elgado, #*ne of the possibilities with brain transmitters is to
influence people so that they conform to the political system. Autonomic and
somatic functions, individual and social behavior, emotional and mental
reactions may be invoked, maintained, modified, or inhibited, both in animals
and in man, by stimulation of specific cerebral structures. :hysical control of
many brain functions is a demonstrated fact. t is even possible to followintentions, the development of thought and visual e$periences.#
elgado, in a series of e$periments terrifying in their human potential,
implanted electrodes in the skull of a bull. (aving a red cape, elgado
provoked the animal to charge. Then, with a signal emitted from a tiny hand5
held radio transmitter, he made the beast turn aside in mid5lunge and trot
docilely away. /e has ;also< been able to =play‖ monkeys and cats like =littleelectronic toys that yawn, hide, fight, play, mate and go to sleep on command.‖
The individual is defenseless against direct manipulation of the brain ;elgado,
Physical Control
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Such e$periments were done even on human beings. Studies in human sub?ects
with implanted electrodes have demonstrated that electrical stimulation of the
depth of the brain can induce pleasurable manifestations, as evidenced by the
spontaneous verbal reports of patients, their facial e$pression and general
behavior, and their desire to repeat the e$perience. (ith such e$periments, heunfolded many of the mysteries of the BRA, which contributed to the
developments in brain implant technology. @or e.g. he understood how the
sensation of suffering pain could be reduced by stimulating the frontal lobes of
the brain.
elgado was born in Rondo, Spain, and interestingly enough he is not a
medical doctor or even a vet, but merely a biologist with a degree from !adrid
niversity. /e, however, became an e$pert in neurobehavioral research and by
the time he had published this book 7 Physical Control of the Mind ) in '060,he had more than 922 publishing credits to his name. /is research was
sponsored by 3ale niversity, @oundations @und for Research in :sychiatry,
nited States :ublic /ealth Service ', *ffice of aval Research 9,
nitedStates Air @orce 615'st Aero medical Research %aboratory >, euroResearch
@oundation, and the Spanish Council for Scientific +ducation, among others.
Neura) Net+or0($
eural networks are loosely modeled on the networks of neurons in biological
systems. They can learn to perform comple$ tasks. They are especially
effective at recogni"ing patterns, classifying data, and processing noisy signals.
They possess a distributed associative memory which gives it the ability to
learn and generali"e, i.e., adapt with e$perience.
http://www.google.com/search?hl=en&q=Delgado+Physical-Control-of-the-Mindhttp://www.google.com/search?hl=en&q=Delgado+Physical-Control-of-the-Mindhttp://www.google.com/search?hl=en&q=Delgado+Physical-Control-of-the-Mindhttp://members.tripod.com/~mdars/1http://members.tripod.com/~mdars/1http://members.tripod.com/~mdars/2http://members.tripod.com/~mdars/3http://www.google.com/search?hl=en&q=Delgado+Physical-Control-of-the-Mindhttp://members.tripod.com/~mdars/1http://members.tripod.com/~mdars/2http://members.tripod.com/~mdars/3http://www.google.com/search?hl=en&q=Delgado+Physical-Control-of-the-Mind
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The study of artificial neural networks has also added to the data re4uired to
create brain chips. They crudely mimic the fundamental properties of the brain.
Researchers are working in both the biological and engineering fields to further
decipher the key mechanisms of how man learns and reacts to everyday
e$periences.
The physiological evidences from the brain are followed to create thesenetworks. Then the model is analy"ed and simulated and compared with that of
the brain. f any discrepancy is spotted between the model and the brain, the
initial hypothesis is changed and the model is modified. This procedure is
repeated until the model behaves in the same way as the brain.
(hen eventually a network model which resembles the brain in every aspect is
created, it will be a ma?or breakthrough in the evolution towards implantable brain chips.
Brain Ce))( and Si)i&on Chi%( Lin0ed E)e&troni&a))y$
*ne of the toughest problems in neural prosthetics is how to connect chips and
real neurons. Today, many researchers are working on tiny electrode arrays that
link the two. /owever, once a device is implanted the body develops so5called
glial cells, defenses that surround the foreign ob?ect and prevent neurons and
electrodes from making contact.
n !unich, the !a$ :lanck team is taking a revolutionary approach
interfacing the nerves and silicon directly. # think we are the only group doing
this,# @romher" said.
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@romher" is at work on a si$5month pro?ect to grow three or four neurons on a
'E2 $ 'E25transistor array supplied by nfineon, after having successfully
grown a single neuron on the device. n a past e$periment, the researcher
placed a brain slice from the hippocampus of a monkey on a specially coated
C!*S device in a :le$iglas container with electrolyte at > degrees C. n afew days dead tissue fell away and live nerve endings made contact with the
chip.
i!"1$ The Ma2 P)an&0 In(titute !re+ thi( 3(nai)3 neuron ato% an Infineon
Te&hno)o!ie( CMOS de.i&e that -ea(ure( the neuron3( e)e&tri&a) a&ti.ity4 )in0in!
&hi%( and )i.in! &e))(.
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Their plan is to build a system with '1,222 neuron5transistor
sites55a first step toward an eventual computational model of brain activity.
6
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ACHIEVEMENTS IN THE IELD
The achievements in the field of implantable chips, bio5chips, so far are
significant. Some of them are mentioned below
Brain ,Pa&e-a0er(/$
Researchers at the crossroads of medicine and electronics are developing
implantable silicon neurons that one day could carry out the functions of a part
of the brain that has been damaged by stroke, epilepsy or Al"heimerFs disease.
The .S. @ood and rug Administration have approved implantable
neurostimulators and drug pumps for the treatment of chronic pain, spasticity
and diabetes, according to a spokesman for !edtronic nc. 7!inneapolis8. A
sponsor of the Capri conference, !edtronic says it is already delivering
benefits in neural engineering through its Activa therapy, which uses an
implantable neurostimulator, commonly called a brain pacemaker, to treatsymptoms of :arkinsonFs disease.
Surgeons implant a thin, insulated, coiled wire with four electrodes at the tip,
and then thread an e$tension of that wire under the skin from the head, down
the neck and into the upper chest. That wire is connected to the
neurostimulator, a small, sealed patient5controlled device that produces
electrical pulses to stimulate the brain.
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These implants have helped patients suffering from :arkinson&s disease to a
large e$tent.
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i!"5$ Co-%uter &hi% -ode) of neura) fun&tion for i-%)anted *rain %rothe(e(
Retino-or%hi& Chi%($
The famed mathematician Alan Turing predicted in '012 that computers would
match wits with humans by the end of the century. n the following decades,
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researchers in the new field of artificial intelligence worked hard to fulfill his
prophecy, mostly following a top5down strategy f we can ?ust write enough
code, they reasoned, we can simulate all the functions of the brain. The results
have been dismal. Rapid improvements in computer power have yielded
nothing resembling a thinking machine that can write music or run a company,
much less unlock the secrets of consciousness. Gwabena Boahen, a leadresearcher at the niversity of :ennsylvaniaFs euroengineering Research
%aboratory, is trying a different solution. Rather than imposing pseudo5smart
software on a conventional silicon chip, he is studying the way human neurons
are interconnected. Then he hopes to build electronic systems that re5create the
results. n short, he is attempting to reverse5engineer the brain from the bottom
up.
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Boahen and his fellow neuromorphic engineers are now discovering that the
brainFs underlying structure is much simpler than the behaviors, insights, and
feelings it incites. That is because our brains, unlike desktop computers,
constantly change their own connections to revamp the way they process
information. #(e now have microscopes that can see individual connections between neurons. They show that the brain can retract connections and make
new ones in minutes. The brain deals with comple$ity by wiring itself up on
the fly, based on the activity going on around it,# Boahen says. That helps
e$plain how three pounds of neurons, drawing hardly any more power than a
night5light, can perform all the operations associated with human thought.
The first product from BoahenFs lab is a retinomorphic chip, which he is now
putting through a battery of simple vision tests. Containing nearly 6,222
photoreceptors and D,222 synthetic nerve connections, the chip is about one5eighth the si"e of a human retina. )ust as impressive, the chip consumes only
2.26 watt of power, making it roughly three times as efficient as the real thing.
A general5purpose digital computer, in contrast, uses a million times moreenergy per computation as does the human brain. #Building neural prostheses
re4uires us to match the efficiency, not ?ust the performance, of the brain,# says
Boahen. A retinal chip could be mounted inside an eyeball in a year or two, he
says, after engineers solve the remaining challenges of building an efficient
human5chip interface and a compact power supply.
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i!"6$ Thi( artifi&ia) eye &ontain( +or0in! e)e&troni& .er(ion( of the four ty%e( of
!an!)ion &e))( in the retina7 The &u-*er(o-e array of e)e&troni&( and o%ti&(
(urround( an artifi&ia) retina4 +hi&h i( 8u(t one"tenth of an in&h +ide7
Remarkable as an artificial retina might be, it is ?ust a baby step toward the big
ob?ectiveHreverse5engineering the brainFs entire ornate structure down to the
last dendrite. A thorough simulation would re4uire a minutely detailed neural
blueprint of the brain, from brain stem to frontal lobes.
At E-ory Uni.er(ity 9 The Menta) Mou(e$
r. :hilip R. Gennedy, an ;sic< clinical assistant professor of neurology at +moryniversity in -eorgia, reported that a paraly"ed man was able to control a cursor
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with a cone5shaped, glass implant. +ach ;neurotrophic electrode
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i!":$ ;)a(( &one i-%)ant(
The La*"rat and The Mon0ey$
Rats steered by a computerIcould soon help find buried earth4uake victims or
dispose of bombs, scientists said ;' !ay 9229
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3ork who led the research team.I =The rat feels nirvana. Asked to speculate‖
on potential military uses for robotic animals, r Talwar agreed they could, in
theory, be put to some unpleasant uses, such as assassination.
Photo of Re-ote"&ontro))ed rat
''
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Scientists say they have developed a technology that enables a monkey to
move a cursor on a computer screen simply by thinking about it.I
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sing high5tech brain scans, the researchers determined that small clump of
cellsIwere active in the formation of the desire to carry out specific body
movements. Armed with this knowledge, ;researchers at the California nstitute
of Technology in :asadena< implanted sensitive electrodes in the posterior
parietal corte$ of a rhesus monkey trained to play a simple video game.I Acomputer program, hooked up to the implanted electrodes,Ithen moved a
cursor on the computer screen in accordance with the monkey&s desires H left
or right, up or down, wherever =the electrical 7brain8 patterns tells us the
monkey is planning to reach, according to ;researcher‖ aniella< !eeker. ;r.
(illiam /eetderks, director of the neural prosthesis program at the ational
nstitute of eurological isorders and Stroke,< believes that the path to long5
lasting implants in people would involve the recording of data from many
electrodes. =To get a rich signal that allows you to move a limb in three5
dimensional space or move a cursor around on a screen will re4uire the ability
to record from at least >2 neurons, he said.‖
'9
http://www.google.com/search?hl=en&q=Daniella+Meekerhttp://www.google.com/search?hl=en&q=Daniella+Meekerhttp://www.google.com/search?hl=en&q=William+Heetderkshttp://www.google.com/search?hl=en&q=William+Heetderkshttp://www.google.com/search?hl=en&q=Daniella+Meekerhttp://www.google.com/search?hl=en&q=Daniella+Meekerhttp://www.google.com/search?hl=en&q=William+Heetderkshttp://www.google.com/search?hl=en&q=William+Heetderks
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BENEITS O IMPLANTABLE CHIPS
The future may well involve the reality of science fictionFs cyborg, persons
who have developed some intimate and occasionally necessary relationship
with a machine. t is likely that implantable computer chips acting as sensors,
or actuators, may soon assist not only failing memory, but even bestow fluency
in a new language, or enable #recognition# of previously unmet individuals.The progress already made in therapeutic devices, in prosthetics and in
computer science indicates that it may well be feasible to develop direct
interfaces between the brain and computers.
Computer scientists predict that within the ne$t twenty years neural interfaces
will be designed that will not only increase the dynamic range of senses, but
will also enhance memory and enable #cyberthink# H invisible communicationwith others. This technology will facilitate consistent and constant access to
information when and where it is needed.
The linkage of smaller, lighter, and more powerful computer systems with
radio technologies will enable users to access information and communicate
anywhere or anytime. Through miniaturi"ation of components, systems have
been generated that are wearable and nearly invisible, so that individuals,supported by a personal information structure, can move about and interact
freely, as well as, through networking, share e$periences with others. The
wearable computer pro?ect envisions users accessing the Remembrance Agent
of a large communally based data source.
As intelligence or sensory #amplifiers#, the implantable chip will generate atleast four benefits
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t will increase the dynamic range of senses, enabling, for e$ample, seeing R,
J, and chemical spectraK
t will enhance memoryK
t will enable #cyberthink# H invisible communication with others when
making decisions, and
t will enable consistent and constant access to information where and when it
is needed.
@or many these enhancements will produce ma?or improvements in the 4uality
of life, or their survivability, or their performance in a ?ob. The first prototype
devices for these improvements in human functioning should be available in
five years, with the military prototypes starting within ten years, andinformation workers using prototypes within fifteen yearsK general adoption
will take roughly twenty to thirty years. The brain chip will probably function
as a prosthetic cortical implant. The userFs visual corte$ will receive stimulation
from a computer based either on what a camera sees or based on an artificial
#window# interface.
-iving completely paraly"ed patients full mental control of robotic limbs orcommunication devices has long been a dream of those working to free such
individuals from their locked5in state. ow this dream is on the verge of
reality.
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DRAWBAC
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ramifications include whether there will be a competitive market in such
systems and if there will be any industry5wide standards for design of the
technology.
*ne of the least controversial uses of this enhancement technology will be its
implementation as therapy. t is possible that the technology could be used to
enable those who are naturally less cognitively endowed to achieve on a moree4uitable basis. Certainly, uses of the technology to remediate retardation or to
replace lost memory faculties in cases of progressive neurological disease
could become a covered item in health care plans. +nabling humans to
maintain species typical functioning would probably be viewed as a desirable,
even re4uired, intervention, although this may become a constantly changing
standard. The costs of implementing this technology need to be weighed
against the costs of impairment, although it may be that decisions should bemade on the basis of rights rather than usefulness.
Consideration also needs to be given to the psychological impact of enhancing
human nature. (ill the use of computer5brain interfaces change our conception
of man and our sense of identityL f people are actually connected via their
brains the boundaries between self and community will be considerably
diminished. The pressures to act as a part of the whole rather than as a single
isolated individual would be increasedK the amount and diversity of
information might overwhelm, and the sense of self as a uni4ue and isolated
individual would be changed.
Since usage may also engender a human being with augmented sensory
capacities, the implications, even if positive, need consideration. Supersensory
sight will see radar, infrared and ultraviolet images, augmented
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hearing will detect softer and higher and lower pitched sounds, enhanced smell
will intensify our ability to discern scents, and an amplified sense of touch will
enable discernment of environmental stimuli like changes in barometric pressure. These capacities would change the #normal# for humans, and would
be of e$ceptional application in situations of danger, especially in battle. As the
numbers of enhanced humans increase, todayFs normal range might be seen as
subnormal, leading to the medicali"ation of another area of life. Thus,substantial 4uestions revolve around whether there should be any limits placed
upon modifications of essential aspects of the human species. Although
defining human nature is notoriously difficult, manFs rational powers have
traditionally been viewed as his claim to superiority and the centre of personal
identity. Changing human thoughts and feeling might render the continued
e$istence of the person problematical. f one accepts, as most cognitivescientists do, #the materialist assertion that mind is an emergent phenomenon
from comple$ matter, cybernetics may one day provide the same re4uisite level
of comple$ity as a brain.# *n the other hand, not all philosophers espouse the
materialist contention and use of these technologies certainly will impact
discussions about the nature of personal identity, and the traditional mind5body
problem. !odifying the brain and its powers could change our psychic states,
altering both the self5concept of the user, and our understanding of what it
means to be human. The boundary between me #the physical self# and me #the
perceptoryMintellectual self# could change as the ability to perceive and interact
e$pands far beyond what can be done with video conferencing. The boundariesof the real and virtual worlds may blur, and a consciousness wired to the
collective and to the accumulated knowledge of mankind would surely impact
the individualFs sense of self. (hether this would lead to bestowing greater
weight to collective responsibilities and whether this would be beneficial are
unknown.
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Changes in human nature would become more pervasive if the altered
consciousness were that of children. n an intensely competitive society,
knowledge is often power. :arents are driven to provide the very best for their
children. (ill they be able to secure implants for their children, and if so, how
will that change the already une4ual lottery of lifeL Standards for entrance intoschools, gifted programs and spelling bees N all would be affected. The
ine4ualities produced might create a demand for universal coverage of these
devices in health care plans, further increasing costs to society. /owever, in a
culture such as ours, with different levels of care available on the basis of
ability to pay, it is plausible to suppose that implanted brain chips will beavailable only to those who can afford a substantial investment, and that this
will further widen the gap between the haves and the have5not. A ma?or an$iety
should be the social impact of implementing a technology that widens the
divisions not only between individuals, and genders, but also, between rich and
poor nations. As enhancements become more widespread, enhancement
becomes the norm, and there is increasing social pressure to avail oneself of
the #benefit.# Thus, even those who initially shrink from the surgery may find
it becomes a necessity, and the consent part of #informed consent would‖
become sub?ect to manipulation.
Beyond these more imminent prospects is the possibility that in thirty years, #it
will be possible to capture data presenting all of a human beingFs sensory
e$periences on a single tiny chip implanted in the brain.# This data would be
collected by biological probes receiving electrical impulses, and would enable
a user to recreate e$periences, or even to transplant memory chips from one
brain to another. n this eventuality, psychological continuity of personal
identity would be disrupted with indisputable ramifications. (ould theresulting person have the identities of other personsL
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The most frightening implication of this technology is the grave possibility that
it would facilitate totalitarian control of humans. n a prescient pro?ection of
e$perimental protocols, -eorge Annas writes of the #pro?ect to implant
removable monitoring devices at the base of the brain of neonates in three
ma?or teaching hospitals....The devices would not only permit us to locate allthe implantees at any time, but could be programmed in the future to monitor
the sound around them and to play subliminal messages directly to their
brains.# sing such technology governments could control and monitor
citi"ens. n a free society this possibility may seem remote, although it is not
implausible to pro?ect usage for children as an early step. !oreover, in themilitary environment the advantages of augmenting capacities to create
soldiers with faster refle$es, or greater accuracy, would e$ert strong pressures
for re4uiring enhancement. (hen implanted computing and communication
devices with interfaces to weapons, information, and communication systems
become possible, the military of the democratic societies might re4uire usage
to maintain a competitive advantage. !andated implants for criminals are a
foreseeable possibility even in democratic societies. :olicy decisions will arise
about this usage, and also about permitting usage, if and when it becomes
possible, to affect specific behaviours. A paramount worry involves who will
control the technology and what will be programmedK this issue overlaps withuneasiness about privacy issues, and the need for control and security of
communication links. ot all the countries of the world prioriti"e autonomy,
and the potential for sinister invasions of liberty and privacy are alarming.
obody seems to intuitively have a problem with implantable devices for the
blind, deaf, and impaired. /owever, biochips may become a 7literal8 invasion
of privacy.
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The Applied igital Solutions #-uardian Angel# chip is implanted in thousands
of household pets. Recently, however, a surgeon affiliated with the company
implanted a chip in his arm and his hip to demonstrate how people with
pacemakers could be scanned from up to D feet away.
Tracking stray cats was a promising beginning in the implantable chip
business, but dismayed by the potential flak from civil libertarians, Appliedigital Solutions backed off from suggesting that its chips be implanted in
small children and elders with dementiaK the company is now marketing them
7the chips, not the small children8 as attachable devices.
Chips for pets havenFt raised any hackles. But the idea of in?ecting chips in
humans disturbs anyone concerned about the shreds of privacy we still hold.
mplantable chips are the penultimate identifier, ne$t to A, which is whatmakes them scary. The technology isnFt there yet, but it will be. @uture
proposals to use chips to track prisoners, implantable devices in the military to
enhance the abilities of soldiers, and cyber implants allowing information
workers to communicate with machines will make current concerns about
digital privacy and medical information seem trifling. The potential for
totalitarian mind control may be far fetched, but future biobrain implants could
be like todayFs digital cable55all those channels, but nothing on.
n view of the potentially devastating implications of the implantable brain
chip should its development and implementation be prohibitedL This is, of
course, the 4uestion that open dialogue needs to address, and it raises the
disputed topic of whether technological development can be resisted, or
whether the empirical slippery slope will necessarily result in usage, in which
case regulation might still be feasible. ssues raised by the
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prospect of implantable brain chips are hard ones, because the possibilities for
both good and evil are so great. The issues are too significant to leave to
happenstance, computer scientists, or the commercial market. t is vital thatworld societies assess this technology and reach some conclusions about what
course they wish to take.
CHALLEN;ES ACED B= THE SCIENTISTS
%inking our bodies to machines isnFt new. @or e$ample, millions of Americans
have pacemakers. /awking depends on a machine to speak, as he suffers from
%ou -ehrigFs disease, a degenerative disease of the nervous system. /owever,
chips and biosensors in development are beginning to blur the line between in
vitro and in silicon. mplantable living chips may enable the blind to see,
cochlear implants can restore hearing to the deaf, and implants might
ameliorate the effects of :arkinsonFs or spinal damage. Thought5operated
devices to enable the paraly"ed to manipulate computer cursors are being
tested.
:lenty of good may be accomplished with these inventions, but worry.
!assively parallel biocomputers will consist of a puddle of cells in a bioreactor. (hat will happen when your biocomputer gets the fluL And
#computer virus# will earn a whole new, literal meaning. 7 donFt even want to
think about the phrase, #The blue screen of death.#8 The potential downside to
biocomputing in the year 92>2 may be eerily reminiscent of what often
happens to lunches stored in todayFs office fridge. f the power regulating the
temperature in the bioreactor gets cut off, or wild viruses infect the biofilm
coating your motherboard, or the office cleaning crew gets a little too
enthusiastic splashing the bleach around, your T personnel will have to don
rubber gloves and hold their noses.
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http://www.artificialvision.com/vision/index.htmlhttp://www.artificialvision.com/vision/index.html
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A researcher at )ohns /opkins niversity is using a collection of J%S chips to
confirm new insights into how the neocorte$ of the human brain unites
information from the senses to create a coherent picture of the world. Andreas
Andreou of the universityFs epartment of Computer Science and +lectrical
+ngineering has wired the chips together with optoelectronic connections to build an image5processing module modeled on Boston niversity neural
theorist Stephen -rossbergFs latest insights into brain function.
-rossberg recently proposed what might be described as a #net5centric# view
of brain operation in which the communication channels between the brainFs
processing modules perform a crucial blending of different perceptual units.
This view is essentially different from the conventional model that likens brain
operation to parallel processors found in digital computers or analog
distributed processing networks. Andreou is convinced that the shift inemphasis from processor to network holds the key to solving some of the
difficult problems facing computer scientists.
#espite the phenomenal success in engineering rudimentary ears, eyes and
noses for computers, our progress has not generali"ed to more comple$
systems and harder tasks,# Andreou said in a presentation at the recent Critical
Technologies for the @uture of Computing conference, held last month in San
iego. t is at the neocorte$ level of information processing, where sensed
information is assembled into a full picture, that current technology seems to
run into a brick wall.
The greatest challenge has been in building the interface between biology and
technology. erve cells in the brain find each other, strengthen connections and
build patterns through comple$ chemical signaling
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that is driven in part by the environment. Also, in a stroke patient, whose cells
are dying, we need to get surviving neurons to choose to interface with a
silicon chip. (e also need to make the neural interface stable, so that walkingaround or nodding doesn&t disrupt the connection.
Another challenge is to give completely paraly"ed patients full mental control
over robotic limbs or communication devices. The brain waves of such a
person are very weak to accomplish this task.
ecreasing the si"e of the chip so that it can be implanted subcutaneously, is
yet another challenge. This will help the patient to adapt to the implant more
easily.
n )uly '006, information was released on research currently taking place into
creation of a computer chip called the = Sou) Cat&her 1>1:.‖
r. Chris (inter and a team of scientists at British Telecom&s !artlesham
/eath %aboratories, near pswich, are developing a chip that, when placed into
the skull behind the eye, will record all visual and physical sensations, as well
as thoughts. According to (inter, =This is the end of deathI By combining
this information with a record of the person&s genes, we could recreate a person physically, emotionally, and spiritually.‖
http://www.google.com/search?hl=en&q=Soul-Catcher-2025http://www.google.com/search?hl=en&q=Soul-Catcher-2025http://www.google.com/search?hl=en&q=Soul-Catcher-2025
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CONCLUSION
#euroscience,# wrote author Tom (olfe in Forbes maga"ine a couple years
ago, #is on the threshold of a unified theory that will have an impact as
powerful as that of arwinism a hundred years ago.#
(olfe is wowed by the combination of powerful imaging and tracking
technologies that now allow scientists not only to watch the brain #as it
functions#55 not only to identify centers of sensation #lighting up# in response
to stimuli, but to track a thought as it proceeds along neural pathways and
traverses the brainscape on its way to the great cerebral memory bank, where it
4ueues up for short5 or long5term storage. ow that you know what condition
your condition is in, you know that such devices are only a stopgap measure at
best in the evolutionary story. The implants you get may enhance yourcapabilities, but they will e$pire when you do, leaving the ne$t generation
unchanged.
As we become more dependent on biotechnology, the standards of what is
#alive# will be up for grabs. Take a look at The Tissue Culture and Art :ro?ectFs
semi living worry dolls, cultured in a bioreactor by growing living cells on
artificial scaffolds, or the :ig (ings pro?ect, which e$plores if pigs could fly.
eciding who or what, e$actly, is human will be an incendiary issue in the
years to come as our genetic engineering technologies progress and we go
beyond implantables to actual germ5line genetic modification. (e are already
creating chimerical creatures by combining genes from different species. (e
will try to engineer improved human beings55not because weFre so
http://www.forbes.com/http://www.tca.uwa.edu.au/ars/arsMainFrames.htmlhttp://www.symbiotica.uwa.edu.au/research/pig.htmlhttp://www.forbes.com/http://www.tca.uwa.edu.au/ars/arsMainFrames.htmlhttp://www.symbiotica.uwa.edu.au/research/pig.html
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concerned about the intelligent machine life we are creating, but because weFre
human, and itFs embedded in our nature to e$plore, tinker, and create.
t will be several years before we see a practical application of the technologywe&ve discussed. %et&s hope such technologies will be used for restoring the
prosperity and peace of the world and not to give the world a devastating end.
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REERENCES$
httpMMmembers.tripod.com
www.informationweek.comMstoryM(G92292'9DS2296
www.bu.eduMwcpM:apersMBioeMBioe!c-e.htm
www.mercola.comM922'MsepM'9MsiliconOchips.htm
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CONTENTS
TR*CT*
+J*%T* T*(ARS !:%ATAB%+ BRA C/:S
The Study of the Brain
eural etworks
Brain Cells and Silicon Chips %inked +lectronically
AC/+J+!+TS
• Brain =:acemakers‖
Retinomorphic Chips
At +mory niversity N The !ental !ouse
The %ab5rat and The !onkey
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B++@TS *@ !:%ATAB%+ BRA C/:S
RA(BACGS
C/A%%+-+S
C*C%S*
R+@+R+C+S
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ABSTRACT
Computer scientists predict that within the ne$t twenty years neural interfaces
will be designed that will not only increase the dynamic range of senses, but
will also enhance memory and enable #cyberthink# H invisible communication
with others. This technology will facilitate consistent and constant access to
information when and where it is needed.
The ethical evaluation in this paper focuses on issues of safety and informed
consent, issues of manufacturing and scientific responsibility, an$ieties about
the psychological impacts of enhancing human nature, worries about possible
usage in children, and most troubling, issues of privacy and autonomy.
nasmuch as this technology is fraught with perilous implications for radically
changing human nature, for invasions of privacy and for governmental control
of individuals, public discussion of its benefits and burdens should be initiated,
and policy decisions should be made as to whether its development should be proscribed or regulated, rather than left to happenstance, e$perts and the
vagaries of the commercial market.
The seminar initiated a discussion on the above topics, about what all were the
evolutionary events towards this technology, the achievements attained till
today in the field which included a number of devices designed to help man to
live a better life, the benefits of implanting chips, the disadvantages anddrawbacks of using these prosthetic devices, and the challenges being faced,
which need to be dealt with.
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