Educators educating Educators

May 26

Harvard GSE

 

Visual teaching points to be mindful of when presenting information to students

Todd Rose: Harvard Gradate School of Education, Mind, Brain, & Education


Big Ideas Relating to Visual Perception: When talking about visual perception, below are some things to consider


Þ Visual perception doesn’t assist in the perception of our world; it dominates the perception of our world

Þ Perception is dynamic and extremely variable

Þ Vision is by far our most dominant sense, taking up half of our brain’s cortical resources

Þ What we see is only what our brain tells us we see, and it is not 100&% accurate.

Þ We don’t see with our eyes; we see with our brains.

Þ The brain takes very limited information and makes meaning of it within a context

Þ The brain is naturally goal directed, it shapes perception, attention, memory

Þ The visual cortex process the thousands of streams of information separately for individual features, the visual field is in its most fragmented state. The brain then reassembles the scattered information

Þ What you see is not 100% acute representation of what is out there. Why? Because our brains insist on helping us create our perceived reality

Þ The brain is far from a camera. It is actively deconstructing the information given to it by the eyes, pushing it through a series of filters, and then reconstructing what it thinks it sees. Or what it thinks you should see

Þ Not only do you perceive things that aren’t there, but also exactly how you construct your false information follows certain rules. Previous information play a role in what the brain allows you to see, and the brain’s assumptions play a vital role.

Þ What does the brain base it guesses? Prior experiences with events in your past.

Þ Competence depends on context and there are tradeoffs in context

Þ Visual perception doesn’t assist in the perception of our world; it dominates the perception of our world


The following videos will reinforce the above concepts

Biological motion: http://www.michaelbach.de/ot/mot_biomot/index.html

Blind spot: http://faculty.washington.edu/chudler/chvision.html

Cornsweet illusion: http://en.wikipedia.org/wiki/Cornsweet_illusion

Curveball illusion: http://illusioncontest.neuralcorrelate.com/2009/the-break-of-the-curveball/

Importance of luminance and contrast illusion: http://www.michaelbach.de/ot/mot_feet_lin/index.html

Color lags behind luminance: http://www.michaelbach.de/ot/mot_flashlag1/index.html

Cortical blind man avoids obstacles: http://www.npr.org/templates/story/story.php?storyId=98590831

McGurk Effect: http://www.youtube.com/watch?v=aFPtc8BVdJk

Koffka ring: http://web.mit.edu/persci/gaz/gaz-teaching/flash/koffka-movie.swf

Raman solves rubix cube: http://video.google.com/videoplay?docid=-4180435763269825467#

 




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