PSYB51H3 Lecture Notes - Lecture 5: Subtractive Color, Shining Light, Color Blindness
Document Summary
Saq: describe one experiment that would suggest that faces aren t special. Researchers created artificial things called greebles made of geons and there were entire families. Participants were asked to train to recognize them. Those trained to recognize the greebles, had brain areas that were stimulated by looking at the greebles. Not the greebles themselves, but someone with expertise with the greebles caused these neurons to fire. Point: ffa is not really a face area, but is an area of visual expertise: whatever you are expert to will cause this area to light up. Loc any lesions here cause problems with recognition. Colour: not a physical property, but rather a psychophysical property. We mostly use light that is reflected bounces off object. Rods used in dark conditions, cones in the light. Considering the green layer: looking through a green filter, would see that the nose has about the same luminance as the stars on the cheek of the clown.
