Cerebral metabolism and patterned visual stimulation: A positron emission tomographic study of the human visual cortex

M. J. Kushner, A. Rosenquist, A. Alavi, M. Rosen, R. Dann, F. Fazekas, T. Bosley, J. Greenberg, M. Reivich

Research output: Contribution to journalArticle

Abstract

We studied the impact of visual stimulation upon cerebral metabolism in normal young men using FDG-PET. Results obtained from subjects receiving patterned visual stimulation while performing an ocular fixation task were compared with results from ocular fixation alone. Visual stimulation in the macular region of either hemifield produced significant increases in metabolism of the contralateral posterior striate cortex. Visual stimulation induced highly significant asymmetries in metabolism of the prefrontal and inferior parietal cortices. Metabolic activation in extrastriate areas tended to be right-sided. These findings support the classic notion of retinotopic organization within the primary visual sensory cortex. They also indicate that the patterns of cerebral metabolism are not equivalent between the two cerebral hemispheres. This latter finding suggests that in humans the right cerebral hemisphere may be specialized for visual processing.

Original languageEnglish (US)
Pages (from-to)89-95
Number of pages7
JournalNeurology
Volume38
Issue number1
StatePublished - Jan 1988
Externally publishedYes

    Fingerprint

ASJC Scopus subject areas

  • Clinical Neurology

Cite this

Kushner, M. J., Rosenquist, A., Alavi, A., Rosen, M., Dann, R., Fazekas, F., Bosley, T., Greenberg, J., & Reivich, M. (1988). Cerebral metabolism and patterned visual stimulation: A positron emission tomographic study of the human visual cortex. Neurology, 38(1), 89-95.