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Authors
Roberts, EdAhmad, Hena
Arshad, Qadeer
Patel, Mitesh
Dima, Dina
Leech, Robert
Seemungal, Barry M.
Sharp, David J.
Bronstein, Adolfo M.
Issue Date
2016-12-10
Metadata
Show full item recordAbstract
The brain combines visual, vestibular and proprioceptive information to distinguish between self- and world motion. Often these signals are complementary and indicate that the individual is moving or stationary with respect to the surroundings. However, conflicting visual motion and vestibular cues can lead to ambiguous or false sensations of motion. In this study, we used functional magnetic resonance imaging to explore human brain activation when visual and vestibular cues were either complementary or in conflict. We combined a horizontally moving optokinetic stimulus with caloric irrigation of the right ear to produce conditions where the vestibular activation and visual motion indicated the same (congruent) or opposite directions of self-motion (incongruent). Visuo-vestibular conflict was associated with increased activation in a network of brain regions including posterior insular and transverse temporal areas, cerebellar tonsil, cingulate and medial frontal gyri. In the congruent condition, there was increased activation in primary and secondary visual cortex. These findings suggest that when sensory information regarding self-motion is contradictory, there is preferential activation of multisensory vestibular areas to resolve this ambiguity. When cues are congruent, there is a bias towards visual cortical activation. The data support the view that a network of brain areas including the posterior insular cortex may play an important role in integrating and disambiguating visual and vestibular cues.Citation
Roberts, R.E., Ahmad, H., Arshad., Q. Patel, M., Dima, D., Leech, R., Seemungal, BM., Sharp, DJ., and Bronstein, AM. 'Functional neuroimaging of visuo-vestibular interaction', Brain Structure and Function, 222 (5) p222-2329. https://doi.org/10.1007/s00429-016-1344-4Publisher
SpringerJournal
Brain Structure and FunctionAdditional Links
https://link.springer.com/article/10.1007/s00429-016-1344-4Type
Journal articleLanguage
enISSN
1863-2653ae974a485f413a2113503eed53cd6c53
10.1007/s00429-016-1344-4
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