PSYCO367 Chapter Notes - Chapter 4: Neuroplasticity, Lateral Geniculate Nucleus, Retinal Ganglion Cell
2 May 2014
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Document Summary
Most of the signals from the retina travel out of the eye in the optic nerve to the lateral geniculate nucleus (lgn) in the thalamus. From there signals travel to the primary visual receiving area in the occipital lobe: the visual receiving area is also called the striate cortex. From the striate cortex, signals are transmitted along two pathways: temporal lobe, parietal lobe. Superior colliculus: an area involved in controlling eye movements and other visual behaviours that receives about 10% of the fibres from the optic nerve. Lgn neurons have the same center-surround configuration as retinal ganglion cells: they respond to small spots of light on the retina. Major function of the lgn is not to create new receptive field properties, but to regulate neural information as it flows from the retina to the visual cortex. 90% of optic nerves arrive at the lgn.
