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Subdural potentials at orbitofrontal and mesial prefrontal areas accompanying anticipation and decision making in humans: a comparison with Bereitschaftspotential

STS Instructor Authored by Thomas Collura

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Check out this Knowledge Base article from StressTherapy Solutions: Subdural potentials at orbitofrontal and mesial prefrontal areas accompanying anticipation and decision making in humans: a comparison with Bereitschaftspotential.

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Study at a glance

Area
QEEG, Methods & Mechanisms
Study type
Observational study
Authors
Ikeda A, Lüders HO, Collura TF, Burgess RC, Morris HH, Hamano T, Shibasaki H
Journal
Electroencephalography and Clinical Neurophysiology
Year
1996
Participants
5
Protocol
subdural recording during warned Go/No-Go task and self-paced movement

Key findings

  • Orbitofrontal and mesial prefrontal cortex generated a slow wave while anticipating the cue
  • Both sides of mesial prefrontal cortex showed a brief response likely tied to decision making
  • The readiness potential was limited to the supplementary and primary motor areas
  • Suggests prefrontal areas handle cognitive preparation and decisions, motor areas handle movement preparation

DOI 10.1016/0013-4694(95)00239-1 → PubMed 8631280 →

Five patients with epilepsy undergoing presurgical evaluation had electrodes on the brain surface while performing a warned Go/No-Go choice task and, separately, self-paced movements. Orbitofrontal and inner (mesial) prefrontal areas produced a slow anticipatory wave before the go/no-go signal and a brief response when it arrived, whatever the decision. The readiness potential before self-paced movement appeared only over motor areas, not prefrontal cortex.