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Four‐week test‐retest stability of individual differences in the saccadic CNV, two saccadic task parameters, and selected neuropsychological tests
Author(s) -
Klein CH.,
Berg P.
Publication year - 2001
Publication title -
psychophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.661
H-Index - 156
eISSN - 1469-8986
pISSN - 0048-5772
DOI - 10.1111/1469-8986.3840704
Subject(s) - saccadic masking , neuropsychology , psychology , saccadic eye movement , audiology , neuropsychological test , alertness , developmental psychology , eye movement , cognition , neuroscience , psychiatry , medicine
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 ≤ r tt ≤ .88) and neuropsychological (.62 ≤ r tt ≤ .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.