Talk 2: Perceptions of the Brain Why Our Perception of Reality is Almost Always Wrong?

 Slides for Talk1 are available here.

In the following I publish the slides for the second meeting.

The first slide refers to a  video of the rotating mask illusion.  This may be seen here.  The illustration provides one of the best examples of our convexity preference.  The convexity preference arises because for millions of years humans lived on earth under the illumination of a single light source from above (the Sun); and had observed features on the Earth that were almost always convex (hills, mounds, trees, animals, huts etc.). These objects were illuminated on top and cast a shadow at the base. In absence of shadows to guide, humans tend to interpret the object as convex.    

The checker-board illusion is demonstrated convincingly by a video that may be seen by clicking HERE.

In the next meeting (talk 3), we shall look at some of the hardware that humans have for perceiving the world around them.