PSYCH 1XX3 Lecture Notes - Lecture 9: Visual Cortex, Receptive Field, Occipital Lobe
18 Apr 2017
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Document Summary
Form is processed along the ventral stream of the visual pathway. Brain uses a division of labour, with each region along the usual pathway processing relatively specific info and then passing it on: form recognition is a similar strategy. The parvocellular pathway is crucial to object/form recognition. Magno cells: found mainly in the periphery of retina, used for detecting changes in brightness and motion and depth. Parvo cells: found throughout retina and detect colour, pattern and form. Retina, cells exit eye via optic nerve, travel to lgn and end up in primary visual cortex in occipital lobe. 1st magno and parvo cells transduce light stimulus into a neural impulse. Hodgkin and huxley (1952): recorded electrical activity in an individual neuron of the squid and this paved way for researchers to use technology to see how individual neurons respond to specific stimuli.
