PMID: 9164009Mar 1, 1997Paper

Effects of changes in arousal level by continuous light stimulus on contingent negative variation (CNV)

Applied Human Science : Journal of Physiological Anthropology
S HiguchiM Sato

Abstract

The purpose of the present study was to investigate an inverted-U relationship between contingent negative variation (CNV) and arousal level which was influenced by extraneous environment. As an extraneous stimulant, stimulation by light was adopted, and five levels of luminance conditions, 10 cd/m2, 100 cd/m2, 320 cd/ m2, 1,000 cd/m2, and 1,800 cd/m2 were provided randomly. Under five luminance conditions, seven subjects who had been accustomed a measurement of CNV executed simple reaction time tasks to evoke CNV. Outside CNV, spontaneous EEG prior to S1 was measured as an indicator for arousal level. As a result, a negative correlation existed between the logarithm of luminance and the relative power value of alpha waves at Fz. Otherwise, an increase in luminance caused an increase in CNV amplitude until the luminance level reached 320 cd/m2, beyond which however CNV amplitude was found to decrease. These tendencies were most remarkable in the phase of early CNV at Fz. The low amplitude of early CNV seen in the high luminance conditions was inferred to have been induced by excessive arousal state because of the low relative power value of alpha waves, while the low amplitude in the low luminance conditions was inferred to hav...Continue Reading

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Jan 1, 1997·Applied Human Science : Journal of Physiological Anthropology·S HiguchiA Yasukouchi

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Citations

Oct 31, 2002·Biological Psychology·Tomiharu HirumaSunao Kaneko
Feb 29, 2008·Journal of Cognitive Neuroscience·Thomas FischerBurkhard Brocke
Jun 5, 1998·Applied Human Science : Journal of Physiological Anthropology·T KatsuuraY Kikuchi
Sep 4, 2009·Perceptual and Motor Skills·Sayaka Matsumoto, Haruo Sakuma
May 12, 2011·Biological Psychology·Marta BortolettoRoss Cunnington
Nov 26, 2008·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Nicholas Benikos, Stuart J Johnstone
Jan 29, 2013·Psychophysiology·Stefan DuschekGustavo A Reyes del Paso
Sep 17, 2013·Psychophysiology·Stefan DuschekGustavo A Reyes Del Paso
Nov 18, 2004·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Keita KamijoKazuo Kuroiwa
Feb 8, 2006·Biological Psychology·Stefan DuschekRainer Schandry
Jan 24, 2019·Journal of Physiological Anthropology·Tetsuo Katsuura, Soomin Lee
Nov 21, 2018·Psychophysiology·Stefan DuschekUlrich Ettinger
Jan 21, 2003·Journal of Applied Physiology·Shigekazu HiguchiYoshihiro Kaneko

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