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Cerebral functional magnetic resonance imaging of vestibular, auditory, and nociceptive areas during galvanic stimulation
Author(s) -
Bucher Stefan F.,
Dieterich Marianne,
Wiesmann Martin,
Weiss Alexander,
Zink Reto,
Yousry Tarek A.,
Brandt Thomas
Publication year - 1998
Publication title -
annals of neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.764
H-Index - 296
eISSN - 1531-8249
pISSN - 0364-5134
DOI - 10.1002/ana.410440118
Subject(s) - vestibular system , stimulation , somatosensory system , thalamic stimulator , functional magnetic resonance imaging , gyrus , galvanic vestibular stimulation , medicine , neuroscience , thalamus , insula , nociception , magnetic resonance imaging , secondary somatosensory cortex , audiology , psychology , deep brain stimulation , radiology , receptor , disease , parkinson's disease
Cerebral activation was investigated with functional magnetic resonance imaging (FMRI) during galvanic stimulation of the mastoid in 6 normal volunteers. Cutaneous stimulation at the neck C4–5 level served as a control. During mastoid stimulation, bilateral vestibular activation occurred in the posterior insula (parietoinsular vestibular cortex, PIVC), the transverse temporal (Heschl's) gyrus, and thalamic pulvinar. The cutaneous pain elicited by galvanic stimulation caused bilateral activity of the medial part of the insula and the anterior median thalamus. Thus, galvanic stimulation at the mastoid level activates cortical areas of three different sensory systems in the insulathalamic region, the vestibular, the auditory, and the nociceptive systems.