Adaptation aftereffects reveal that tactile distance is a basic somatosensory feature.

Autor:	Calzolari E; Department of Psychological Sciences, Birkbeck, University of London, London WC1E 7HX, United Kingdom.; Department of Psychology, University of Milano-Bicocca, 20126 Milan, Italy., Azañón E; Department of Psychological Sciences, Birkbeck, University of London, London WC1E 7HX, United Kingdom; eazanyon@gmail.com., Danvers M; Department of Psychological Sciences, Birkbeck, University of London, London WC1E 7HX, United Kingdom., Vallar G; Department of Psychology, University of Milano-Bicocca, 20126 Milan, Italy.; Neuropsychological Laboratory, Istituto di Ricovero e Cura a Carattere Scientifico Istituto Auxologico Italiano, 20122 Milan, Italy., Longo MR; Department of Psychological Sciences, Birkbeck, University of London, London WC1E 7HX, United Kingdom.
Jazyk:	angličtina
Zdroj:	Proceedings of the National Academy of Sciences of the United States of America [Proc Natl Acad Sci U S A] 2017 Apr 25; Vol. 114 (17), pp. 4555-4560. Date of Electronic Publication: 2017 Apr 10.
DOI:	10.1073/pnas.1614979114
Abstrakt:	The stage at which processing of tactile distance occurs is still debated. We addressed this issue by implementing an adaptation-aftereffect paradigm with passive touch. We demonstrated the presence of a strong aftereffect, induced by the simultaneous presentation of pairs of tactile stimuli. After adaptation to two different distances, one on each hand, participants systematically perceived a subsequent stimulus delivered to the hand adapted to the smaller distance as being larger. We further investigated the nature of the aftereffects, demonstrating that they are orientation- and skin-region-specific, occur even when just one hand is adapted, do not transfer either contralaterally or across the palm and dorsum, and are defined in a skin-centered, rather than an external, reference frame. These characteristics of tactile distance aftereffects are similar to those of low-level visual aftereffects, supporting the idea that distance perception arises at early stages of tactile processing. Competing Interests: The authors declare no conflict of interest.
Databáze:	MEDLINE
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