Slow brain potentials in the CNV-paradigm
article
Slow brain potentials were recorded during the foreperiod of a reaction time task, and the effects of instructions governing the trade-off between speed and accuracy were investigated. One brain potential, a slow negative shift preceding S2, was largely attenuated under accuracy instructions. It is suggested that this shift is dependent on a motor response and that its amplitude reflects the level of motor preparation. Two other brain potentials, a slow positive and a slow negative wave, seem to depend on the psychological properties of S1. Enhanced amplitudes were found, when S1 provides information, besides its warning function.
Topics
TNO Identifier
5221
Source
Acta Psychologica, 44(2), pp. 147-163.
Pages
147-163
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