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Vertigo and Cerebral Hemoglobin Changes during Unilateral Caloric Stimulation
Author(s) -
Iida Masahiro,
Haida Munetaka,
Igarashi Makoto
Publication year - 2009
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.2009.03869.x
Subject(s) - caloric theory , hemoglobin , vestibular system , medicine , stimulus (psychology) , stimulation , sensation , vertigo , cerebral cortex , anesthesia , audiology , neuroscience , psychology , surgery , psychotherapist
The aim of the present study using near‐infrared spectroscopy (NIRS) is to evaluate the correlation of cerebral (parieto‐temporal lobe) hemoglobin changes and vertiginous sensation during unilateral caloric stimulation. During the hot water (44° C) stimulus, cerebral hemoglobin was increased bilaterally, but it was dominant ipsilaterally. During the unilateral cold water (30° C) stimulus, cerebral hemoglobin was decreased on both sides, especially on the ipsilateral side. Vertigious sensation was strong in cases with marked left‐right difference of cerebral hemoglobin changes. The usefulness of NIRS to investigate the relationship between peripheral vestibular organ and vestibular cortex was verified.