Author:
Thompson Dorothy A.,Drasdo Neville
Abstract
This study was prompted by our interest in the relationship of the visual evoked potential to the multiple specialized visual areas in the cortex. Scalp recorded visual-evoked potentials, (VEPs), are considered the result of radially oriented dipole generators situated on gyral crests. A change in the distribution of evoked potential activity might therefore indicate the activation of different neural tissue. Some 32 specialized visual areas have been described in the macaque cortex (1), each of which may be expected to have a human homologue. Physiological evidence suggests these specialized areas maintain some of the functional segregation first encountered at the lateral geniculate nucleus.
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