PSYB51H3 Lecture Notes - Zonule Of Zinn, White Spot, Ganglion Cell
Document Summary
Receptive fields: the ability of a neuron to respond to physical stimuli directly or indirectly, within a constraint field of space. Filters: retina filters different types of information, perception is filtering out information to tell whether something is there or not. Contrast- is filtered out in retina, difference in luminance which is more important info than absolute levels of luminance. Light can be absorbed, diffracted, reflected, transmitted or refracted. Absorbed: energy(e. g. light) is taken up and not transmitted at all: e. g. dust, surfaces, filters. Reflected: energy that is redirected when it strikes a surface: purkinje reflections. 4 different surfaces in which light gets reflected(outer/inner surface of cornea, outer/inner surface of lens) These reflections viewed from front looks like little spots, measure the positions of the light spots in camera and you can determine where the eyes are actually looking: eye movements.
