PSYC 2390 Chapter Notes -Spatial Frequency, Fourier Analysis, Sine Wave
1 Aug 2013
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V1, striate cortex, area 17: came from different disciplines, stripped cortex stain it and it looks striped ( striate ) Size of credit card on the back of the head. Hit on back of head, axons put under stress, see flash of light. Site of conscious visual perception: 80% of cortex responds to visual stimuli. Feature analysis: image is being taken apart into sections and at each section you are looking at line orientation, depth and motion, colour. Spatial relations are largely reserved (retinotopic maps: neurons near each other in the cortex have receptive fields near each other in the retina. Some parts of retina are more largely represented in visual cortex than others (cortical magnification: magnification of area that you are looking right at in visual cortex. Fovea (100% cones, no convergence), large amount of brain devoted to it, 0. 1% of retina but 8% of area in visual cortex.
