Enhanced integration of multisensory body information by proximity to "habitual action space"

Dempsey-Jones, Harriet and Kritikos, Ada (2017) Enhanced integration of multisensory body information by proximity to "habitual action space". Journal of Experimental Psychology: Human Perception and Performance, 43 4: 770-782. doi:10.1037/xhp0000338

Author Dempsey-Jones, Harriet
Kritikos, Ada
Title Enhanced integration of multisensory body information by proximity to "habitual action space"
Journal name Journal of Experimental Psychology: Human Perception and Performance   Check publisher's open access policy
ISSN 1939-1277
Publication date 2017-04-01
Sub-type Article (original research)
DOI 10.1037/xhp0000338
Open Access Status Not yet assessed
Volume 43
Issue 4
Start page 770
End page 782
Total pages 13
Place of publication Washington, DC, United States
Publisher American Psychological Association
Collection year 2018
Language eng
Formatted abstract
Previous research suggests integration of visual and somatosensory inputs is enhanced within reaching (peripersonal) space. In such experiments, somatosensory inputs are presented on the body while visual inputs are moved relatively closer to, or further from the body. It is unclear, therefore, whether enhanced integration in "peripersonal space" is truly due to proximity of visual inputs to the body space, or, simply the distance between the inputs (which also affects integration). Using a modified induction of the rubber hand illusion, here we measured proprioceptive drift as an index of visuosomatosensory integration when distance between the two inputs was constrained, and absolute distance from the body was varied. Further, we investigated whether integration varies with proximity of inputs to the habitual action space of the arm-rather than the actual arm itself. In Experiment 1, integration was enhanced with inputs proximal to habitual action space, and reduced with lateral distance from this space. This was not attributable to an attentional or perceptual bias of external space because the pattern of proprioceptive drift was opposite for left and right hand illusions, that is, consistently maximal at the shoulder of origin (Experiment 2). We conclude that habitual patterns of action modulate visuosomatosensory integration. It appears multisensory integration is modulated in locations of space that are functionally relevant for behavior, whether an actual body part resides within that space or not.
Keyword Peripersonal space
Proprioceptive drift
Reaching space
Rubber hand illusion
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
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School of Psychology Publications
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