Klein C, Andresen B, Berg P, Krüger H, Rockstroh B
Department of Psychology, University of Freiburg, Germany.
Psychophysiology. 1998 May;35(3):272-82. doi: 10.1017/s0048577298961212.
The topography of the postimperative negative variation (PINV) was analyzed in participants with high and low scores on the German version of the Schizotypal Personality Questionnaire. Scalp amplitude and Laplacian maps of the terminal contingent negative variation (tCNV) and PINV and the time course of the PINV were compared between the two groups. CNV and PINV were induced with a delayed matching-to-sample task, in which the pattern of the imperative stimulus was either clearly or ambiguous matched to one of the two diamonds simultaneously presented as a warning stimulus 4.0 s earlier. Electroencephalograms were recorded with a DC amplifier (32 channels). Negativity increased from tCNV to PINV, especially at frontal sites, and the PINV was larger under ambiguous than under clear matching conditions. Low-scoring participants showed a right-sided predominance of the PINV, which was absent in high-scoring participants. These results resemble differences in the topography of the PINV between healthy control participants and those with schizophrenia under identical experimental conditions and suggest functional differences between tCNV and PINV.
对在德文版精神分裂症人格问卷上得分高和得分低的参与者的命令后负变化（PINV）的地形进行了分析。比较了两组之间终末伴随负变化（tCNV）和PINV的头皮振幅和拉普拉斯图以及PINV的时间进程。通过延迟样本匹配任务诱发CNV和PINV，其中命令刺激的模式与4.0秒前同时呈现为警告刺激的两个菱形之一清晰或模糊匹配。用直流放大器（32通道）记录脑电图。从tCNV到PINV负性增加，尤其是在额叶部位，并且在模糊匹配条件下PINV比清晰匹配条件下更大。低分参与者的PINV表现为右侧优势，而高分参与者则没有。这些结果类似于在相同实验条件下健康对照参与者和精神分裂症患者之间PINV地形的差异，并表明tCNV和PINV之间存在功能差异。
