Comparison between the lambda response of eye-fixation-related potentials and the P100 component of pattern-reversal visual evoked potentials.

Full Abstract

The purpose of this study was to compare the lambda response of eye-fixation-related potentials (EFRPs) with the P100 component of pattern-reversal visual-evoked potentials. EFRPs were obtained by averaging EEGs time-locked to the offset of the saccade. The dipole of the lambda response and that of the P100 component were estimated by the dipole-tracing method (Musha & Homma, 1990). The locations of their dipoles at the occipital sites were very close to each other when the difference waveform, which was calculated by subtracting the EFRP to the patternless stimulus from the EFRP to the patterned stimulus, was used for the lambda response. This finding implies that the lambda response and P100 have a common neural generator in the visual cortex. However, the peak latency of the lambda response was shorter than that of P100. The saccades in the EFRP trial were considered to be the cause of the difference.

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Author information

Author/s: Kazai, Koji (K); Yagi, Akihiro (A);

Affiliation: Department of Psychology, Kwansei Gakuin University, Nishinomiya, Hyogo, Japan. kazai(-atsign-)kwansei.ac.jp

Journal and publication information

Publication Type: Clinical Trial; Comparative Study; Journal Article; Research Support, Non-U.S. Gov't

Journal: Cognitive, affective & behavioral neuroscience (Cogn Affect Behav Neurosci), published in United States. (Language: eng)

Reference: 2003-Mar; vol 3 (issue 1) : pp 46-56

Dates: Created 2003/06/25; Completed 2003/08/13; Revised 2006/11/15;

PMID: 12822598, status: MEDLINE (last retrieval date: 11/6/2008)

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Occipital Lobe - physiology
Pattern Recognition, Visual - physiology
Reaction Time - physiology
Reference Values
Reversal Learning
Saccades
Visual Perception - physiology

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