Cortical processing in vestibular navigation.

Progress in Brain Research
Barry M SeemungalAdolfo M Bronstein

Abstract

Visual and vestibular perceptual processes are intimately related. Previous data suggest a reciprocal visual-vestibular inhibition with regard to head motion (velocity) perception with each sensory modality mediated by distinct cerebral cortical loci. The relationship between visual and vestibular perceptual processes with regard to displacement perception is unknown. In a path-reversal vestibular navigation task, we investigated the effects of early visual deprivation on vestibular perception by comparing performance and strategies employed (i.e., displacement vs. velocity matching) by a group of congenitally blind subjects to that of a sighted control group. In a second experiment in a sighted group, we attempted to disrupt firstly displacement encoding and then velocity encoding, during a path-reversal vestibular navigation task, by applying repetitive transcranial magnetic stimulation (rTMS) to the right posterior parietal cortex (PPC), vs. a left motor cortex control. Our data show that for a path-reversal vestibular navigation task, when given free choice, sighted and blind subjects can utilize both displacement- and velocity-matching strategies, and overall, both groups display equivalent performance in performing the pa...Continue Reading

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Citations

May 29, 2010·The International Journal of Clinical and Experimental Hypnosis·Manuel MenzocchiEnrica Laura Santarcangelo
Feb 14, 2014·PloS One·Liliane BorelPatrick Péruch
Feb 15, 2017·Scientific Reports·Frank Schumann, J Kevin O'Regan
Dec 14, 2018·Frontiers in Cellular Neuroscience·Zhixian Cheng, Yong Gu

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