Motor-sensory convergence in object localization: a comparative study in rats and humans

Horev, G., Saig, A., Knutsen, P. M., Pietr, M., Yu, C. X., Ahissar, E. (November 2011) Motor-sensory convergence in object localization: a comparative study in rats and humans. Philosophical Transactions of the Royal Society B-Biological Sciences, 366 (1581). pp. 3070-3076. ISSN 0962-8436

URL: http://www.ncbi.nlm.nih.gov/pubmed/21969688
DOI: 10.1098/rstb.2011.0157

Abstract

In order to identify basic aspects in the process of tactile perception, we trained rats and humans in similar object localization tasks and compared the strategies used by the two species. We found that rats integrated temporally related sensory inputs ('temporal inputs') from early whisk cycles with spatially related inputs ('spatial inputs') to align their whiskers with the objects; their perceptual reports appeared to be based primarily on this spatial alignment. In a similar manner, human subjects also integrated temporal and spatial inputs, but relied mainly on temporal inputs for object localization. These results suggest that during tactile object localization, an iterative motor-sensory process gradually converges on a stable percept of object location in both species.

Item Type: Paper
Uncontrolled Keywords: behaviour dynamics closed feedback loops adaptive process video-tracking sensory substitution decision-making speed-accuracy tradeoff fixational eye-movements somatosensory cortex sensorimotor system head movements precision grip task whisking performance feedback
Subjects: organism description > animal
organism description > animal behavior
organism description > animal > mammal > primates > hominids > human
organism description > animal > mammal
organism description > animal > mammal > rodent > rat
organism description > animal > mammal > rodent > rat

organism description > animal > mammal > rodent
CSHL Authors:
Communities: CSHL labs > Mills lab
CSHL Post Doctoral Fellows
Depositing User: Matt Covey
Date: 12 November 2011
Date Deposited: 06 Feb 2013 22:07
Last Modified: 02 May 2013 16:02
PMCID: PMC3172599
Related URLs:
URI: http://repository.cshl.edu/id/eprint/27137

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