COGNITIVE DETERMINANTS OF THE POSTIMPERATIVE NEGATIVE-VARIATION
COGNITIVE DETERMINANTS OF THE POSTIMPERATIVE NEGATIVE-VARIATION
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DOI：
10.1111/j.1469-8986.1990.tb00380.x
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发表时间：
1990-05-01
期刊：
影响因子：
3.7
通讯作者：
ENGEL, RR
中科院分区：
文献类型：
--
作者：
KATHMANN, N;JONITZ, L;ENGEL, RR
这项研究检查了命令后负变化（PINV）的认知决定因素，PINV是在预先警告的反应时间任务中命令式刺激开始后可观察到的一种缓慢的大脑电位。运动反应对厌恶性命令性刺激的可控性和意外事件的可预测性在因子设计中是不同的。慢负波的外源部分在被动聆听条件下使用与命令性刺激相同质量的音调进行评估，但在没有预先警告的情况下呈现。结果表明，PINV 不仅在缺乏控制时发生，而且在不可预测地获得控制时也会发生。同样，不可预测的缺乏控制会比持续的无助产生更大的负面影响。在可预见的缺乏控制期间，仅由厌恶语气引起的消极情绪与 PINV 没有显着差异。在组之间操纵的条件顺序不会影响振幅。结论是，偶发性变化是 PINV 的关键认知决定因素，而缺乏控制的影响很难与声刺激的感官影响区分开来。
This sudy examined cognitive determinants of the postimperative negative variation (PINV), a slow brain potential observable after the onset of an imperative stimulus in a forewarned reaction time task. Controllability of the aversive imperative stimulus by a motor reaction and predictability of the contingency were varied in a factorial design. The exogenous portion of a slow negative wave was assessed in a passive listening condition using tones of the same quality as the imperative stimuli, but presented without forewarning. Results show that PINV not only occurs when control is absent but also during unpredictably gained control. Similarly, unpredictable lack of control yields a more negative potential than continual helplessness. Negativity elicited by the aversive tone alone was not significantly different from PINV during predictable lack of control. The order of conditions, which was manipulated between groups, did not affect amplitudes. It was concluded that cotingency change is a crucial cognitive determinant of the PINV, whereas the effect of lack of control is difficult to differentiate from the sensory influence of the acoustic stimulation.