Clinical investigation of the vestibular cortex.
This study attempted to identify the vestibular cortex that is involved in the perception of vestibular vertigo in the human brain. We used single-photon emission computed tomography (SPECT) to measure regional cerebral blood flow (rCBF) in two cerebrovascular patients with nystagmus-sensation dissociation, which is known as brisk caloric nystagmus without simultaneous sensation of vertigo. Both patients had ischemic lesions involving mainly the parieto-temporal lobe in the nondominant hemisphere. It is suggested that the parieto-temporal lobe in the nondominant hemisphere contains the vestibular cortex which is a center for the perception of vertigo due to vestibular stimulation.
Takeda
N
N
Department of Otolaryngology, Osaka University Medical School, Japan.
Tanaka-Tsuji
M
M
Sawada
T
T
Koizuka
I
I
Kubo
T
T
D000368:Aged; D000369:Aged, 80 and over; D001931:Brain Mapping; D002150:Caloric Tests; D002544:Cerebral Infarction / Q000000981:diagnostic imaging / Q000503:physiopathology*; D004292:Dominance, Cerebral / Q000502:physiology; D005260:Female; D006801:Humans; D008575:Meniere Disease / Q000000981:diagnostic imaging / Q000503:physiopathology*; D008875:Middle Aged; D010296:Parietal Lobe / Q000000981:diagnostic imaging / Q000503:physiopathology; D012027:Reflex, Vestibulo-Ocular / Q000502:physiology*; D013702:Temporal Lobe / Q000000981:diagnostic imaging / Q000503:physiopathology; D015899:Tomography, Emission-Computed, Single-Photon; D014724:Vestibular Function Tests; D014726:Vestibular Nuclei / Q000503:physiopathology*