van Boxtel G J, Brunia C H
Physiological Psychology Section, Tilburg University, The Netherlands.
Int J Psychophysiol. 1994 Aug;17(3):269-79. doi: 10.1016/0167-8760(94)90069-8.
To study the contribution of the Stimulus-Preceding Negativity (SPN) to the late wave of the Contingent Negative Variation (CNV), negativity was recorded preceding an instruction stimulus (S1), an instruction stimulus to which a motor response was required (S2) and a stimulus that transmitted Knowledge of Results (KR). All recorded negativities showed a centro-parietal maximum. The pre-instruction negativities tended to be larger over the left hemisphere, while a right hemisphere preponderance was found for the pre-KR negativity. Unlike the pre-S1 negativity, the pre-KR negativity may depend on affective-motivational processes. The pre-S1 negativity was small and influenced by factors other than the instruction at S1. It is concluded that the SPN contributes to the late CNV, but that this contribution was relatively small.
为研究刺激前负波（SPN）对关联性负变（CNV）晚期波的贡献，在指令刺激（S1）、需要做出运动反应的指令刺激（S2）以及传递结果知识（KR）的刺激之前记录负波。所有记录到的负波均在中央顶叶出现最大值。指令前负波在左半球往往更大，而KR前负波则以右半球优势为主。与S1前负波不同，KR前负波可能取决于情感动机过程。S1前负波较小，且受S1处指令以外的因素影响。得出的结论是，SPN对晚期CNV有贡献，但这种贡献相对较小。
