Are Visual Cortex Cells Feature Detectors?
a. Feature Detectors – neurons whose responses indicate the presence of a particular feature cells in visual cortex also respond to the presence of a particular feature in the environment · Cells in later areas of the cortex respond to more complex shapes, and perhaps they are square detectors, circle detectors, and so forth. · Exposure to a given visual feature decreases sensitivity to that feture.. · waterfall illusion–stare at a waterfall for a minute or more, then look away–the trees and rocks appear to be flowing upward–caused by fatigued feature detector b. the fact that a cell responds best to a particular stimulus does not make it a detector of that stimulus only c. a cortical cell that responds best to one stimulus also responds to many others d. different cortical neurons respond best to different spatial frequencies · V1 neurons respond to spatial frequencies rather than to bars or edges e. different cortical neurons respond best to gratings of different spatial frequenci
