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  4. The human vestibular cortex revealed by coordinate-based activation likelihood estimation meta-analysis
 
research article

The human vestibular cortex revealed by coordinate-based activation likelihood estimation meta-analysis

Lopez, C.
•
Blanke, O.  
•
Mast, F. W.
2012
Neuroscience

The vestibular system contributes to the control of posture and eye movements and is also involved in various cognitive functions including spatial navigation and memory. These functions are subtended by projections to a vestibular cortex, whose exact location in the human brain is still a matter of debate (Lopez and Blanke, 2011). The vestibular cortex can be defined as the network of all cortical areas receiving inputs from the vestibular system, including areas where vestibular signals influence the processing of other sensory (e.g. somatosensory and visual) and motor signals. Previous neuroimaging studies used caloric vestibular stimulation (CVS), galvanic vestibular stimulation (GVS), and auditory stimulation (clicks and short-tone bursts) to activate the vestibular receptors and localize the vestibular cortex. However, these three methods differ regarding the receptors stimulated (otoliths, semicircular canals) and the concurrent activation of the tactile, thermal, nociceptive and auditory systems. To evaluate the convergence between these methods and provide a statistical analysis of the localization of the human vestibular cortex, we performed an activation likelihood estimation (ALE) meta-analysis of neuroimaging studies using CVS, GVS, and auditory stimuli. We analyzed a total of 352 activation foci reported in 16 studies carried out in a total of 192 healthy participants. The results reveal that the main regions activated by CVS, GVS, or auditory stimuli were located in the Sylvian fissure, insula, retroinsular cortex, fronto-parietal operculum, superior temporal gyrus, and cingulate cortex. Conjunction analysis indicated that regions showing convergence between two stimulation methods were located in the median (short gyrus III) and posterior (long gyrus IV) insula, parietal operculum and retroinsular cortex (Ri). The only area of convergence between all three methods of stimulation was located in Ri. The data indicate that Ri, parietal operculum and posterior insula are vestibular regions where afferents converge from otoliths and semicircular canals, and may thus be involved in the processing of signals informing about body rotations, translations and tilts. Results from the meta-analysis are in agreement with electrophysiological recordings in monkeys showing main vestibular projections in the transitional zone between Ri, the insular granular field (Ig), and SII.

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Type
research article
DOI
10.1016/j.neuroscience.2012.03.028
Web of Science ID

WOS:000305550700015

Author(s)
Lopez, C.
Blanke, O.  
Mast, F. W.
Date Issued

2012

Published in
Neuroscience
Volume

212

Start page

159

End page

179

Subjects

vestibular system

•

meta-analysis

•

caloric vestibular stimulation

•

galvanic vestibular stimulation

•

insula

•

parietal operculum

•

Anterior Cingulate Cortex

•

Electrical Cortical Stimulation

•

Monkey Saimiri-Sciureus

•

Positron-Emission-Tomography

•

Posterior Insular Cortex

•

Caloric Stimulation

•

Ale Metaanalysis

•

Squirrel-Monkey

•

Functional Mri

•

Galvanic Stimulation

Editorial or Peer reviewed

NON-REVIEWED

Written at

EPFL

EPFL units
LNCO  
Available on Infoscience
May 16, 2012
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/80504
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