Frontal negativity of pattern-reversal visual evoked potentials in humans

Shizuka Kurita-Tashima, Shozó Tobimatsu, Motohiro Kato

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Abstract

We investigated the nature of negative potential in the frontal region with an approximate latency of 100 ms ('frontal negativity') as a component of pattern-reversal visual evoked potential (PVEP) in healthy human subjects. It was recorded by stimulation of one-half of the visual field, with different reference electrodes and with experimental manipulations of the stimulating visual field ('central scotomata' and 'peripheral constriction'). A negative potential field was demonstrated to be localized in the frontal region, and its physiological properties detected by the visual field manipulations were shown to be different from those of the occipital positive (P100) and negative (N105) components of PVEP. We conclude, therefore, that frontal negativity of PVEP is an actual electrical event generated in the frontal region, independent of P100 and N105.

Original languageEnglish
Pages (from-to)52-63
Number of pages12
JournalNeuroscience Research
Volume10
Issue number1
DOIs
Publication statusPublished - Feb 1991
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Neuroscience(all)

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