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    Adaptation aftereffects reveal that tactile distance is a basic somatosensory feature

    Calzolari, Elena and Azanon Gracia, Elena and Danvers, M. and Vallar, G. and Longo, Matthew R. (2017) Adaptation aftereffects reveal that tactile distance is a basic somatosensory feature. Proceedings of the National Academy of Sciences of the United States of America 114 (17), pp. 4555-4560. ISSN 0027-8424.

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    The stage at which processing of tactile distance occurs is still debated. We addressed this issue by implementing a new 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 palm and dorsum, and are defined in a skin-centred, 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.


    Item Type: Article
    Additional Information: Originally titled "Tactile distance as a basic somatosensory feature: evidence from adaptation aftereffects", this is reflected in the full-text.
    Keyword(s) / Subject(s): touch, tactile distance, adaptation, aftereffects, somatosensory processing
    School: Birkbeck Faculties and Schools > Faculty of Science > School of Psychological Sciences
    Depositing User: Matthew Longo
    Date Deposited: 28 Mar 2017 10:04
    Last Modified: 02 Aug 2023 17:32


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