J. Kaiser et al., HYPNOSIS AND EVENT-RELATED POTENTIAL CORRELATES OF ERROR PROCESSING IN A STROOP-TYPE PARADIGM - A TEST OF THE FRONTAL HYPOTHESIS, International journal of psychophysiology, 27(3), 1997, pp. 215-222
A model of frontal inhibition in hypnosis was elucidated by examining
with cortical evoked potentials error negativity and positivity in 23
low versus medium/high hypnotisables during a perceptual task which in
cluded trials with conflicting stimulus information. In susceptible su
bjects the number of correct responses was found to be smaller for tri
als with incongruent stimulus information with hypnosis when compared
with baseline. While the early negative wave to incorrect responses te
nded to be higher in susceptible subjects, this wave was no longer fol
lowed by a late positivity, posited to reflect a failure to process fu
rther the error-related information. The results with hypnosis are int
erpreted as a failure of context updating without a global deficit in
supervisory attention. (C) 1997 Elsevier Science B.V.