Guillaume Bottazzi - The brain and art
Sensory perception is created by arousal or stimulation which itself produces a reaction.Weare able to see an object only if the information passes through the cortex.That explains why our vision is not simply a mechanical phenomenon but is also connected to mental elaboration...
A few optical-geometrical illusions. On the upper left side, the Müller Lyer illusion.The dot divides the arrow's shaft into two equal halves.The portion on the right appears longer than the portion on the left.On the upper right side, the oblique line is comprised of two segments which are a continuation of each other. The upper segment appears shifted to the right.On the lower left side, the bases of the three trapeziums are equal.On the lower right side, the six lines are parallel.