Relative contributions of visual and auditory spatial representations to tactile localization

Neuropsychologia
Jean-Paul Noel, Mark T Wallace

Abstract

Spatial localization of touch is critically dependent upon coordinate transformation between different reference frames, which must ultimately allow for alignment between somatotopic and external representations of space. Although prior work has shown an important role for cues such as body posture in influencing the spatial localization of touch, the relative contributions of the different sensory systems to this process are unknown. In the current study, we had participants perform a tactile temporal order judgment (TOJ) under different body postures and conditions of sensory deprivation. Specifically, participants performed non-speeded judgments about the order of two tactile stimuli presented in rapid succession on their ankles during conditions in which their legs were either uncrossed or crossed (and thus bringing somatotopic and external reference frames into conflict). These judgments were made in the absence of 1) visual, 2) auditory, or 3) combined audio-visual spatial information by blindfolding and/or placing participants in an anechoic chamber. As expected, results revealed that tactile temporal acuity was poorer under crossed than uncrossed leg postures. Intriguingly, results also revealed that auditory and audio-...Continue Reading

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Citations

Dec 10, 2016·Scientific Reports·Francesca FerriMarcello Costantini
Oct 7, 2016·I-Perception·Roger NewportEden Silver
Mar 27, 2018·The European Journal of Neuroscience·Jean-Paul NoelMark T Wallace
Jun 28, 2018·PloS One·Ana Tajadura-JiménezNorimichi Kitagawa
Mar 3, 2018·PloS One·Andréanne SharpFrançois Champoux
Apr 28, 2018·Experimental Brain Research·Jean-Paul NoelNathan Van der Stoep
Jun 22, 2018·Scientific Reports·Elena Aggius-VellaMonica Gori
Oct 17, 2017·Autism Research : Official Journal of the International Society for Autism Research·Jean-Paul NoelMark T Wallace
Nov 4, 2017·Experimental Brain Research·K D StoneH C Dijkerman
Mar 21, 2017·Neural Plasticity·Matthew A De NiearMark T Wallace
Apr 14, 2018·Consciousness and Cognition·Jean-Paul NoelAndrea Serino

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