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Related Experiment Videos

[Yawning and temporal lobe epilepsy].

Salomón Muchnik1, Samuel Finkielman, Guillermo Semeniuk

  • 1Instituto de Investigaciones Médicas Alfredo Lanari, Facultad de Medicina, Universidad de Buenos Aires, Combatientes de Malvinas 3150, 1427 Buenos Aires, Argentina. mideaguirre@ciudad.com.ar

Medicina
|June 10, 2003
PubMed
Summary

Yawning may signal temporal lobe epilepsy (TLE), a neurological disorder affecting brain structures. This study explores the link between TLE, sleep disturbances, and yawning, suggesting a potential protective mechanism in seizure prevention.

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Area of Science:

  • Neurology
  • Sleep Medicine
  • Epileptology

Background:

  • Temporal lobe epilepsy (TLE) is a common partial epileptic disorder characterized by recurrent seizures originating in the mesial temporal structures.
  • Sleep abnormalities, particularly NREM sleep, can facilitate seizure propagation and are often provoked by epilepsy.
  • The relationship between limbic epilepsy and yawning, a physiological reflex, is rarely reported.

Observation:

  • Two patients with TLE presented with unusual yawning patterns related to their seizures.
  • A 95-year-old male experienced yawning preceding a complex partial seizure during drowsiness, with EEG showing bilateral temporal sharp waves.
  • A 17-year-old female exhibited yawning post-seizure (complex partial and secondarily generalized) after naps, with polysomnography revealing temporal spikes during NREM sleep.

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Findings:

  • Both patients responded well to antiepileptic medications (carbamazepine and divalproex sodium, respectively), with no recurrence of episodes.
  • The study suggests shared neurochemical mechanisms and anatomic structures between TLE, sleep-wake cycles, and yawning.
  • Yawning may represent an endogenous opioid-induced mechanism that helps prevent or stop TLE recurrence.

Implications:

  • Yawning could serve as a potential biomarker or indicator for specific forms of temporal lobe epilepsy.
  • Further research into the neurochemical pathways linking yawning and epilepsy may reveal novel therapeutic targets.
  • Understanding the interplay between sleep, yawning, and TLE is crucial for comprehensive patient management and diagnosis.