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Related Experiment Videos

Epilepsy and consciousness

R A Zappulla1

  • 1Department of Neuroscience, Seton Hall University School of Graduate Medical Education, South Orange, New Jersey, USA.

Seminars in Neurology
|June 1, 1997
PubMed
Summary
This summary is machine-generated.

Seizure activity disrupts consciousness, affecting behavioral responses. Neurologic studies use operational definitions to objectively assess these changes, aiding clinical understanding of consciousness.

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Area of Science:

  • Neuroscience
  • Clinical Neurology

Background:

  • Consciousness is difficult to assess objectively due to subjective experience.
  • Neurologic evaluations often rely on operational definitions for objective assessment of consciousness.

Purpose of the Study:

  • To explore the relationship between seizure activity and alterations in consciousness.
  • To present an objective model for assessing consciousness-dependent behaviors.

Main Methods:

  • Review of clinical experience with ictal and post-ictal alterations.
  • Utilizing electrophysiologic studies and brain stimulation to identify relevant brain structures.
  • Modeling consciousness-dependent mental activity as parallel information channels.

Main Results:

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  • Seizure activity can selectively disrupt behavioral responses linked to consciousness.
  • Electrophysiology and brain stimulation help map brain regions involved in these disruptions.
  • A model of parallel information channels explains ictal behavioral patterns.

Conclusions:

  • Operational definitions provide objective measures of consciousness-dependent behaviors.
  • Disruption of information processing channels during seizures leads to observable behavioral changes.
  • This approach offers a clinical tool for assessing consciousness despite its subjective nature.