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Related Experiment Videos

Biting behavior, aggression, and seizures.

Carlo Alberto Tassinari1, Laura Tassi, Giovanna Calandra-Buonaura

  • 1Division of Neurology, Department of Neurosciences, Bellaria Hospital, University of Bologna, Italy.

Epilepsia
|April 29, 2005
PubMed
Summary
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Aggressive biting during epileptic seizures, particularly in males, is often a reflexive defense of personal space. This behavior involves frontotemporal brain regions and can be triggered by external stimuli.

Area of Science:

  • Neuroscience
  • Clinical Neurology
  • Behavioral Science

Background:

  • Aggressive behaviors, including biting, can manifest during epileptic seizures.
  • Understanding the semiology of such behaviors is crucial for diagnosis and patient management.

Purpose of the Study:

  • To describe the specific features of aggressive behaviors, focusing on biting, during human epileptic seizures.
  • To investigate the potential triggers and underlying neurophysiologic mechanisms of ictal biting.

Main Methods:

  • Retrospective analysis of video-electroencephalography/stereoelectroencephalography (EEG/SEEG) data from 11 patients with drug-resistant epilepsy.
  • Detailed observation and documentation of biting behavior (BB) and associated aggressive gestures during seizures.

Related Experiment Videos

Main Results:

  • Biting behavior predominantly occurred in males and was associated with seizures involving frontotemporal regions bilaterally.
  • The biting act was rapid, often reflexive, triggered by proximity or actions of others, and linked to emotional arousal.
  • Intracranial EEG in one patient indicated amygdala, hippocampal, and orbitofrontal cortex involvement in BB.

Conclusions:

  • Ictal and postictal biting behavior may result from dual temporal and frontal lobe dysfunction.
  • Aggressive gestures, including biting, can represent instinctive defensive behaviors related to the protection of personal space.