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Normal and pathologic laughter in children.

S A Nirenberg1

  • 1Mount Sinai Hospital, University of Toronto, Ontario, Canada.

Clinical Pediatrics
|November 1, 1991
PubMed
Summary
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Pathologic laughter is an involuntary neurological response unrelated to emotion. This study explores the causes of this condition, examining both congenital and acquired origins.

Area of Science:

  • Neurology
  • Neuroscience
  • Human Physiology

Background:

  • Laughter is a complex, involuntary neurological process.
  • Normal laughter positively impacts emotions.
  • Pathologic laughter is incongruent with emotional state and external stimuli.

Purpose of the Study:

  • To differentiate normal and pathologic laughter.
  • To investigate the etiology of pathologic laughter.
  • To consider both congenital and acquired causes of abnormal laughter.

Main Methods:

  • Literature review on laughter mechanisms.
  • Analysis of case studies on abnormal laughter.
  • Review of neuroimaging and neurological studies.

Main Results:

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  • Normal laughter involves specific central nervous system pathways.
  • Pathologic laughter can stem from various congenital neurological disorders.
  • Acquired conditions, such as brain injury or tumors, can also precipitate pathologic laughter.

Conclusions:

  • Pathologic laughter is a distinct neurological phenomenon.
  • Understanding the causes of pathologic laughter is crucial for diagnosis and management.
  • Further research into the neural underpinnings of laughter is warranted.