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AUDITORY EVOKED POTENTIALS EVIDENCE FOR DIFFERENCES IN INFORMATION PROCESSING BETWEEN HIGH AND LOW HYPNOTIZABLE

Anna V Kirenskaya1, Zinaida I Storozheva1, Svetlana V Solntseva1

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High hypnotizable (HH) individuals exhibit enhanced attentional processing, demonstrated by distinct auditory evoked potentials (N100 and P300). Low hypnotizable (LH) individuals showed more errors and less differentiated brain responses.

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Psychophysiology

Background:

  • Auditory evoked potentials (AEPs) like N100 and P300 reflect cognitive processing.
  • Individual differences in hypnotizability may correlate with distinct neural mechanisms of attention.

Purpose of the Study:

  • To investigate differences in N100 and P300 AEPs between high (HH) and low (LH) hypnotizable participants.
  • To explore the psychophysiological basis of attentional differences in relation to hypnotizability.

Main Methods:

  • Utilized a 2-stimulus oddball paradigm to elicit N100 and P300 AEPs.
  • Analyzed AEPs in 18 high hypnotizable and 15 low hypnotizable participants under waking conditions.
  • Measured response accuracy (errors) and electrophysiological parameters (latency, amplitude).

Main Results:

  • Low hypnotizable subjects committed significantly more errors than high hypnotizable subjects.
  • High hypnotizable subjects showed shorter N100 latencies and significant N100 differences between target and non-target stimuli.
  • High hypnotizable subjects exhibited increased P300 amplitude with frontal-central localization compared to low hypnotizable subjects.

Conclusions:

  • Results support a psychophysiological model where high hypnotizability is linked to more efficient frontal attentional systems.
  • Effective information detection, integration, and filtering are associated with higher hypnotizability and distinct AEP patterns.