Kong, G;
Cataldo, A;
Nitu, M;
Dupin, L;
Gomi, H;
Haggard, P;
(2022)
Interhemispheric communication during haptic self-perception.
Proceedings of the Royal Society B: Biological Sciences
, 289
(1988)
, Article 20221977. 10.1098/rspb.2022.1977.
Preview |
Text
rspb.2022.1977.pdf - Published Version Download (867kB) | Preview |
Abstract
During the haptic exploration of a planar surface, slight resistances against the hand's movement are illusorily perceived as asperities (bumps) in the surface. If the surface being touched is one's own skin, an actual bump would also produce increased tactile pressure from the moving finger onto the skin. We investigated how kinaesthetic and tactile signals combine to produce haptic perceptions during self-touch. Participants performed two successive movements with the right hand. A haptic force-control robot applied resistances to both movements, and participants judged which movement was felt to contain the larger bump. An additional robot delivered simultaneous but task-irrelevant tactile stroking to the left forearm. These strokes contained either increased or decreased tactile pressure synchronized with the resistance-induced illusory bump encountered by the right hand. We found that the size of bumps perceived by the right hand was enhanced by an increase in left tactile pressure, but also by a decrease. Tactile event detection was thus transferred interhemispherically, but the sign of the tactile information was not respected. Randomizing (rather than blocking) the presentation order of left tactile stimuli abolished these interhemispheric enhancement effects. Thus, interhemispheric transfer during bimanual self-touch requires a stable model of temporally synchronized events, but does not require geometric consistency between hemispheric information, nor between tactile and kinaesthetic representations of a single common object.
| Type: | Article |
|---|---|
| Title: | Interhemispheric communication during haptic self-perception |
| Location: | England |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1098/rspb.2022.1977 |
| Publisher version: | https://doi.org/10.1098/rspb.2022.1977 |
| Language: | English |
| Additional information: | © 2022 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. |
| Keywords: | Force–geometry illusion, haptic perception, interhemispheric communication, self-touch, sensorimotor integration, Humans, Self Concept, Communication |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Institute of Cognitive Neuroscience |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10162162 |
Archive Staff Only
 |
View Item |
