PSYCH 1XX3 Lecture Notes - Lecture 6: Extrastriate Cortex, Visual Acuity, Prosopagnosia
16 Mar 2017
School
Department
Course
Professor
Document Summary
Mango and parvo (ganglion) cells in the retina transduce the light stimulus into a neural impulse. Mango cells: are found in the periphery of the retina and are used for detecting changes in brightness and motion/ depth. Parvo cells: found throughout the retina, and detect colour, pattern, and form. From the retina, the axons exit the eye via the optic nerve and travel to the lgn, ending up in the primary visual cortex (occipital lobe) Put micro electrodes into the cortex of a cat to record the electrical activity of individual neurons as the cat was shown different stimuli. Once, there was a crack in the screen and the neuron started to re like crazy. >lead to the realization that neurons respond to more complex stimuli than ashes of light. These cells re minimally to a stimuli of a certain shape, size, position, and movement.
