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Estimated Time Schedule – Plan Ahead!
Today: Finalize Myth #4/Begin Myth #5
Tuesday: Finalize Myth #5 NotesDiagrams*New Seats!
Thursday:Brain DissectionsBegin Review
Monday: Test BrainTerm Cut-offExtra Credit DUEMissing/Late Work DUE
Wednesday: Film/Film Worksheet
Friday: Film/Film Worksheet
Reflection
About what percentage of their potential brain power do you think most people use?*Take out your devices. Type this question into a text, tweet, post, etc. *Mark the first three answers/responses you get on the board.
College students:1/3 of Psych majors said 10%
Myth #5:Most People Only Use 10% of Their BrainsBrain & Behavior
1. Where Does This Myth Come From?
•Word of mouth
•Who started this myth?
a. William James, 1908
"We are making use of only a small part of our possible mental and physical resources." (from The Energies of Men, p. 12).
b. Albert Einstein
“Any man who reads too much and uses his own brain too little falls into lazy habits of thinking.”
c. Karl Lashley
Removed large areas of cerebral cortex in rats; Animals could still relearn tasks.
d. Uri Geller, Spoon “Magic”
“Mind Power”
Claimed he was using the untapped power of mind.
Common Belief Persists
What Does Research Tell Us?
There is no scientific evidence to suggest that we use only 10% of our
brains.
2. What are people trying to get at with this 10%?
• INTELLECTUAL POTENTIAL…not actually that you only use 10% of your brain.
• Is that possible?
Does this mean that you would be just fine if 90% of your brain was removed?
3. The average human brain weighs…
3 pounds!
a. If 90% of it was removed, that would leave 0.3 lb. of brain tissue.
That's about the size of a sheep's brain.
What would that do to you?
Example: Wernicke’s Aphasia
Left temporal lobe Understanding language“Aphasia” means “lack of..”
Our brains have been shaped by natural selection.
4. Brain tissue is expensive to grow & operate.
a. 2 – 3% of body weight, uses over 20% of the oxygen we breath!
Squandering of resources to build & maintain such an under used organ!
5. Brain Imaging
a. EEG’s: Electroencephelogram Electrical activity on brain’s surface
b. PET: Positron Emission TopographyActivity
c. MRI: Magnetic Resonance Imaging Detailed pictures of tissue
EEG: electrical activity
PET scan: glucose burn
MRI: detailed pictures
Results of mapping?
All areas at work…no “quiet areas”waiting for assignment.
Brain regions
Brain Regions – Diagram #1
•1. Hindbrain•2. Mid-brain•3. Forebrain
Hindbrain
• Spinal cord
•Medulla: breathing, heart rate, cross-over
• Pons: sleep/dreams
• Cerebellum: balance, coordination
Hindbrain
Reticular formation
Estimated Time Schedule – Plan Ahead!
This Week:Wednesday: New Seats
Finalize Notes/DiagramsBrain “Dissections”
Friday: Superhero StoriesComputer LabTests Returned
Next Week:Tuesday: Film/Worksheet
Superhero Stories DUE
Thursday: Fall Break
Two Weeks:Monday: Finalize Film/Worksheet DUE
Review
Wednesday: Test Brain
Midbrain
•Reticular Activating System (RAS)
Arousal: keeps you awake
Alerts the brain
Forebrain
Forebrain
• Thalamus: relay center
•Hypothalamus: eating, drinking, body temperature, sexual behavior, fight or flight; HOMEOSTASIS
Forebrain: Limbic System
Limbic System
•Hippocampus: Memory formation
•Amygdala: Anger, aggression, & fear
Cerebral Cortex• Cerebral = higher processing• Cortex = center ofCerebral Cortex = Center of Higher Processing
Frontal Lobes – Motor CortexPersonality/Judgement/Decisions
Parietal Lobes - Sensory CortexAssociations/Memory
Temporal Lobes - Auditory CortexFacial Recognition/Long-term Memory
Occipital Lobes - Visual Cortex
Cortex: Lobe Divisions
Association Areas
Another Possible Cause?
•Misunderstood terms in brain research
• “silent cortex”
•Used term to refer to the association areas in the cortex.
Association areas
•25% of cortex devoted to specific functions
•75% devoted to coordinating & integrating information
Dissections
Superheros
Handout/LabScience fiction writers are always searching for good ideas for plots that will capture the interest of their readers. A common premise during one particular era of science fiction was that radiation somehow altered biological processes, transforming normal humans into super humans – some good, some evil. One example is the Incredible Hulk, who, through a laboratory experiment, developed superhuman strength that manifests itself when he is angry.
Your Task: Create your own “brainy” superhero!Extra Credit: Create a super villain with an amplified brain
structure as well and include the SAME information about the villain.
20 points extra credit for super villain write-up10 points extra credit for picture/visual
