Optical illusions

Question 1

Luminance

Answer 1

Bc retina encodes contrast, the luminance is not always true to reality

Question 2

The Hermann Grid

Answer 2

Side effect of the data compression by the retina

Question 3

Global Precedence

Answer 3

Global picture is dominant, the M type arrives first. Local target (X-RGC) later

Seen in Navon task, where global targets are deteted faster (es well as congruent io incongruent)

Question 4

Hemispheric asymmetry

Answer 4

Global info is faster in right hemisphere (left visual field)

Local info is faster in left hemi, right visual field

Patients with damage have trouble copying in corresponding areas