A study of sequential timing processing by contingent negative variation
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概要
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Sequential processing during time interval was investigated using the contingent negative variation (CNV) paradigm (S1-S2-MR), varying inter-stimulus interval (ISI : constant/variable) and inter trial interval (ITI : 10s/3s). The memory trace hypothesis (Smith, 1968) and the temporary inhibitory effect hypothesis (Näätänen & Merisalo, 1977; Niemi & Näätänen, 1981) were tested, whether either of these hypotheses could support the ITI effect on the ISI sequential effect. Our results showed that the reaction time was delayed when the ISI-variable and the ITI-10s conditions were employed. The amplitude of the late CNV over Cz under the ISI-constant condition was larger than that under the ISI-variable condition, and the larger amplitudes seemed to represent the preparation for S2. The amplitudes of the early and late CNV over Fz and Cz under the ITI-10s condition were larger than those under the ITI-3s condition, and the larger amplitudes were thought to represent attention allocated to retrieve temporal information. The memory trace hypothesis did not support the ITI effect on sequential time interval processing, but the temporary inhibitory effect hypothesis did. Attention resources were allocated to the retrieval because of fading of the interval memory trace, and the response preparation was thought to be inhibited during temporal information retrieval. (<I>Japanese Journal of Physiological Psychology and Psychophysiology</I>, 24 (3) : 219-226, 2006.)
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Japanese Society for Physiological Psychology and Psychophysiology | 論文
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