PSY280H1 Study Guide - Ocular Dominance, Grater, Railways Act 1921
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PSY280H1 Full Course Notes
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Document Summary
Light is reflected from an object into the eye. This light is focused to form an image of that object on the retina. Light, in a pattern that illuminates some receptors intensely and some dimly, is absorbed by the visual pigment molecules that pack the rod and cone outer segments. Chemical reactions in the outer segments transduce the light into electrical signals. As these electrical signals travel through the retina, they interact, excite, and inhibit, eventually reaching the ganglion cells, which because of this processing have center-surround receptive fields on the retina. After being processed by the retina these electrical signals are sent out the back of the eye in fibers of the optic nerve. Lateral geniculate nucleus (lgn): most signals from the retina travel out of the eye in the optic nerve to this then to the thalamus. Signals travel to the primary visual receiving area in the occipital lobe of the cortex.
