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  1. Norman A. Leopold
  1. Department of Neurology, Hahnemann Medical College, Philadelphia, Pennsylvania, USA

    Gaze-induced laughter


    Pathological laughter was stimulated by pursuit eye movements with a large extramedullary brainstem tumour. Laughter was also evoked by intense direct light. The mechanism by which visual stimuli could induce pathological laughter is discussed.

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    Gaze-induced laughter