Rapid Recalibration of Peri-Personal Space: Psychophysical, Electrophysiological, and Neural Network Modeling Evidence
Open Access
- 7 May 2020
- journal article
- research article
- Published by Oxford University Press (OUP) in Cerebral Cortex
- Vol. 30 (9), 5088-5106
- https://doi.org/10.1093/cercor/bhaa103
Abstract
Interactions between individuals and the environment occur within the peri-personal space (PPS). The encoding of this space plastically adapts to bodily constraints and stimuli features. However, these remapping effects have not been demonstrated on an adaptive time-scale, trial-to-trial. Here, we test this idea first via a visuo-tactile reaction time (RT) paradigm in augmented reality where participants are asked to respond as fast as possible to touch, as visual objects approach them. Results demonstrate that RTs to touch are facilitated as a function of visual proximity, and the sigmoidal function describing this facilitation shifts closer to the body if the immediately precedent trial had indexed a smaller visuo-tactile disparity. Next, we derive the electroencephalographic correlates of PPS and demonstrate that this multisensory measure is equally shaped by recent sensory history. Finally, we demonstrate that a validated neural network model of PPS is able to account for the present results via a simple Hebbian plasticity rule. The present findings suggest that PPS encoding remaps on a very rapid time-scale and, more generally, that it is sensitive to sensory history, a key feature for any process contextualizing subsequent incoming sensory information (e.g., a Bayesian prior).Funding Information
- NIH/NIMH (1F31MH112336)
- NIH (HD083211, CA183492)
- Bertarelli Foundation and the Swiss National Science Foundation (320030_166643)
- Fondation Biaggi
- Swiss National Foundation (PP00P3_163951/1)
This publication has 85 references indexed in Scilit:
- Amputation and prosthesis implantation shape body and peripersonal space representationsScientific Reports, 2013
- Dynamic Sounds Capture the Boundaries of Peripersonal Space Representation in HumansPLOS ONE, 2012
- Spatiotemporal Analysis of Multichannel EEG: CARTOOLComputational Intelligence and Neuroscience, 2011
- Dynamic Network Connectivity: A new form of neuroplasticityTrends in Cognitive Sciences, 2010
- The behavioral relevance of multisensory neural response interactionsFrontiers in Neuroscience, 2010
- An ERP Investigation on Visuotactile Interactions in Peripersonal and Extrapersonal Space: Evidence for the Spatial RuleJournal of Cognitive Neuroscience, 2009
- Topographic ERP Analyses: A Step-by-Step Tutorial ReviewBrain Topography, 2008
- Recalibration of temporal order perception by exposure to audio-visual asynchronyCognitive Brain Research, 2004
- Tools for the body (schema)Trends in Cognitive Sciences, 2004
- Coding of modified body schema during tool use by macaque postcentral neuronesNeuroReport, 1996