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Let’s talk about (neuro)science
and its importance in usability/UX of an application
Who am I?Andreea Popescu
speaker and volunteer
andreeazpopescu
@andreea_popescu
usability/UX specialist @Evozon
passionate about (neuro)science, HCI, photography & hiking
What do you think usability is?
Joel Spolsky, User Interface Design for Programmers
“Usability, fundamentally, is a matter of bringing a bit of human rights into the world of computer-
human interaction. It's a way to let our ideals shine through in our software, no matter how
mundane the software is.”
How about neuroscience?
Johannes Robbies, UX Redefined Winning and Keeping Customers with Enhanced Usability and User
Experience
“The human brain weighs about 1.4 kilograms - that's only 2 percent of our body weight - but it use more than 20 percent of our body energy.”
Dr. Suzana Herculano-Houzel
“We found that on average the human brain has 86bn neurones [nerve cell that is the basic
building block of the nervous system]. And not one [of the brains] that we looked at so far has
the 100bn."
frontal lobe
The frontal lobe is the center of our emotional network (“How did I
experience it?”) and our cognitive network (“That’s how I
experienced it.”).
frontal lobeparietal lobe
The parietal lobes mediate tactile and kinaesthetic perception (left lobe: information processing; right lobe: combining of diverse visual,
auditory, tactile information into non-language).
frontal lobeparietal lobe
temporal lobe
The temporal lobe serves to organise hearing and memory.
frontal lobeparietal lobe
temporal lobe occipital lobe
The occipital lobe register the characteristics of what we see
and then send the information on to the parental lobes for
interpretations.
These are some examples about how our brain works!
Prefrontal cortex: not paying attention to unnecessary
information —> cortical flaw has been exacerbated by modernity —>
too much information.
Rewards and motivation. Stimulates dopamine, one of the main neurotransmitters, which is heavily active in the frontal lobe.
Patterns activate predictions and stimulate neurons, and this way the user finds it easier to improve their
experiences. Schultz, a physician who explored the human brain in the 70s, “if everything goes according to plan, its dopamine neurons secrete a little
burst of enjoyment”.
Cognitive control and value-based decision-making tasks appear to depend on different brain regions
within the prefrontal cortex. Too many options for choosing an activity create
‘noise’ in the brain, that is mentally exhausting.
Left alignment: users can read each line by simply moving their eyes to the left edge each time. This makes your paragraphs faster and easier to read because the user’s eyes don’t have to
work as hard to find where the line starts each time.
Visual cortex: do not use decorative fonts, because it’s harder for the brain
to find shapes in them.
Reducing the cognitive load (as remembering, thinking, making
decisions) takes less brain effort. E.g. scrolling takes less brain power thank
clicking.
the auditory part of the new brain that deciphers sound (told)
vision and text processing (read)
all the vision parts of the brain (to imagine the characters)
the emotional part of the mid brain
- Dr. David Eagleman
“Every single neuron in the brain is complicated as New York city.”
Resources• “Making Choices: How Your Brain Decides”: http://healthland.time.com/
2012/09/04/making-choices-how-your-brain-decides/
• “SpinalCord”: http://www.spinalcord.com/frontal-lobe
• “UX Redefined Winning and Keeping Customers with Enhanced Usability and User Experience, Johannes Robbies, 2015
• “How does the brain work when confronted with an interface?”, Marc Van Rymenant: http://www.simplifyinginterfaces.com/2008/07/09/how-does-the-brain-work-when-confronted-with-an-interface-episod-2/
• “Why You Should Never Center Align Paragraph Text”: http://uxmovement.com/content/why-you-should-never-center-align-paragraph-text/
• “10 ways to design for the human brain”: http://blog.invisionapp.com/design-for-the-human-brain/
Resources
Thank you.
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