Electrical stimulation of a small brain area reversibly disrupts consciousness

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Electrical stimulation of a small brain area reversibly disrupts consciousness
Authors: Mohamad Z. Koubeissi, Fabrice Bartolomei, Abdelrahman Beltagy, Fabienne Picard
Citation: Epilepsy & behavior : E&B 37C : 32-35. 2014 June
Database(s): PubMed (PMID/24967698)
DOI: 10.1016/j.yebeh.2014.05.027.
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Extract:

Electrical stimulation of a small brain area reversibly disrupts consciousness reports on a electric brain stimulation study of a patient in the extreme capsule close to the anterior-dorsal insula and the neighboring claustrum.

[edit] Method

  • biphasic waves at 14 mA (50 Hz, 0.2-ms pulse width, 3- to 10-second train duration)

[edit] Results

Electric stimulation at the site in question resulted in:

  1. "immediate impairment of consciousness"
  2. "arrest of reading, onset of blank staring, unresponsiveness to auditory or visual commands, and slowing of spontaneous respiratory movements"
  3. "Occasionally, the induced impairment of consciousness was associated with scanty, perseverative, and incomprehensible verbal output consisting of one or two syllables, with a confused look on the face"
  4. "able to continue repetitive movements with the tongue and hands during stimulation" if start before the stimulation
  5. "The patient returned to baseline as soon as the stimulation stopped with no recollection of the events during the stimulation period"

[edit] Related papers

  1. Alterations of behavior following stimulation of the claustrum of the cat
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