The expectancies that govern the P300 amplitude are mostly automatic and unconscious
- 1 February 1998
- journal article
- continuing commentary
- Published by Cambridge University Press (CUP) in Behavioral and Brain Sciences
- Vol. 21 (1) , 149-150
- https://doi.org/10.1017/s0140525x98210958
Abstract
We argue that probability effects on P300 amplitude are the product of an automatic frequency detector not subject to voluntary control and relatively inaccessible to consciousness. “Expectancies” related to P300 therefore appear to be passive, perceptual ones. If probability-based expectancies do become conscious, they are inversely related to P300, supporting the view of Donchin & Coles (1988).Keywords
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