Visual Imagery Right Hemisphere. Although i primarily discuss visual imagery similar processes can occur in other sensory modalities. Visual imagery is the ability to generate mental images in the absence of perception that is seeing with the mind s eye we describe a patient im who suffered from an acute ischemic stroke in the right anterior choroidal artery who appeared to demonstrate relatively isolated impairment in visual imagery.
The left or major hemisphere controlling the right side of the body appears to predominate in verbal sequential and analytic problem solving while the right or minor hemisphere predominates in perceptual holistic manipulo spatial and parallel processing and in gestalt formations. Using a definition of mental imagery as quasi perceptual experience we draw distinctions among visual imagery visual recognition memory and visuospatial abilities. These findings support the hypothesis that the right hemisphere may contain a lexicon of facial emotions.
Whereas low level vision uses visual input bottom up to localize edges and detect motion color and depth high level vision such as.
More dorsal loci of brain damage perhaps coupled with disconnection between the right and the left hemisphere can induce neglect for the left part of visual mental images. Furthermore these findings argue against current views that it is exclusively the left or right hemisphere that mediates visual imagery. The left or major hemisphere controlling the right side of the body appears to predominate in verbal sequential and analytic problem solving while the right or minor hemisphere predominates in perceptual holistic manipulo spatial and parallel processing and in gestalt formations. These findings support the hypothesis that the right hemisphere may contain a lexicon of facial emotions.