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Four-week test-retest stability of individual differences in the saccadic CNV, two saccadic task parameters, and selected neuropsychological tests

Published online by Cambridge University Press:  06 July 2001

CH. KLEIN  and
P. BERG
CH. KLEIN
Affiliation:
Research Group Psychophysiology, University of Freiburg, Germany
P. BERG
Affiliation:
Department of Psychology, University of Konstanz, Germany
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Abstract

The aim of the present study was the comparative assessment of the 4-week test-retest stabilities of the saccadic CNV (sCNV) and saccadic reaction times (SRT) during the execution of pro- and antisaccades, as well as the stability of RT during execution of two neuropsychological tests of alertness and S-R incompatibility. Prosaccades were elicited under the 200-ms gap and overlap conditions, antisaccades under the overlap condition (64 trials each). The EEG was recorded from 25 channels with a DC amplifier (MES, Munich). Data of 20 healthy participants were statistically analyzed. We found high test-retest correlations for all SRT (.76 ≤ rtt ≤ .88) and neuropsychological (.62 ≤ rtt ≤ .88) measures. For the sCNV, coefficients ranging between .58 (pro/gap) and .77 (anti/overlap) were obtained. Whereas SRT were significantly faster during the second than during the first session, group means for the saccadic CNV were stable across the sessions. Our results suggest high 4-week stability of individual differences in SRT, and moderate to good stabilities of saccadic CNV amplitudes. Our results recommend these “traitlike” measures to be used in individual differences research.

Keywords

ProsaccadesAntisaccadesTest-retest stabilitySaccadic CNVNeuropsychological tests
Type
Research Article
Information
Psychophysiology , Volume 38 , Issue 4 , July 2001 , pp. 704 - 711
Copyright
2001 Society for Psychophysiological Research

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