PSY100H1 Chapter Notes - Chapter 5: Visual Cortex, Sensory Deprivation, Lisa Lopes
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PSY100H1 Full Course Notes
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Hubel and wiesel (1963) examined the firing rate of single cells in the primary visual cortex. There was some form of sensory deprivation and measurement was via a microelectrode. The original question was whether preventing vision in one eye would produce blindness in that eye and a defect in cortical physiology. The circuitry of the neurons in its visual cortex is altered. Responses of the cells in its visual cortex remain identical in all respects to those of a normal cat. Cells in the visual cortex respond almost entirely to the signals from the normal eye, so that the (cid:271)lo(cid:272)ked e(cid:455)e is fu(cid:374)(cid:272)tio(cid:374)all(cid:455) dis(cid:272)o(cid:374)(cid:374)e(cid:272)ted fro(cid:373) the (cid:271)rai(cid:374). E(cid:455)e was(cid:374)"t damaged, brain had never learned to speak the language of the left eye. Hirsh and spinelli (1970-1971) raised kittens with two functional eyes, but one eye was only exposed to vertical stripes and the other only to horizontal stripes.
