Pathological laughter and crying: a link to the cerebellum.

@article{Parvizi2001PathologicalLA,
  title={Pathological laughter and crying: a link to the cerebellum.},
  author={J. Parvizi and S. Anderson and C. Martin and H. Damasio and A. Damasio},
  journal={Brain : a journal of neurology},
  year={2001},
  volume={124 Pt 9},
  pages={
          1708-19
        }
}
Patients with pathological laughter and crying (PLC) are subject to relatively uncontrollable episodes of laughter, crying or both. The episodes occur either without an apparent triggering stimulus or following a stimulus that would not have led the subject to laugh or cry prior to the onset of the condition. PLC is a disorder of emotional expression rather than a primary disturbance of feelings, and is thus distinct from mood disorders in which laughter and crying are associated with feelings… Expand
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