Slow cortical and heart rate correlates of discrimination performance
article
Slow EEG potentials (Fz, Cz, Pz) and heart rate were recorded during the foreperiod of a reaction task, which involved different levels of discrimination difficulty. A simple reaction task was compared with a selective reaction task where either an easy or a difficult discrimination was required. In general, the terminal amplitude of the CNV was not affected by task difficulty. However, a prolonged negative wave was found when the difficulty of the task was not known to the subject in advance but was indicated by S1. Moreover, the heart-rate deceleration around S2 was more pronounced the more difficult the discrimination required at S2.
Topics
TNO Identifier
5080
Source
Acta Psychologica, 43(3), pp. 185-198.
Pages
185-198
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