Boyd E S, Boyd E H, Brown L E
Electroencephalogr Clin Neurophysiol. 1977 Mar;42(3):341-54. doi: 10.1016/0013-4694(77)90170-5.
As squirrel monkeys learned that a tone cue signalled the availability of a food reward there appeared in pre- and post-central cortex a surface negative waveform in response to the cue. This waveform disappeared, concomitantly with the animal's behavioral response, during extinction and pseudoconditioning. It was independent of changes in cue intensity sufficient to markedly alter earlier components of evoked activity and it disappeared when evoked activity was averaged with the behavioral response, rather than the cue, as reference point. It was concluded that this evoked potential reflects cortical activity somewhere in the stimulus-response sequence between the recognition of the cue and the decision to act.
当松鼠猴得知音调提示表明有食物奖励可得时，中央前回和中央后回会出现一个表面负向波形以响应该提示。在消退和假条件作用期间，这个波形会随着动物的行为反应而消失。它与足以显著改变诱发活动早期成分的提示强度变化无关，并且当以行为反应而非提示作为参考点对诱发活动进行平均时，它就会消失。得出的结论是，这种诱发电位反映了在提示识别和行动决策之间的刺激 - 反应序列中某个位置的皮质活动。
