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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America. >Adaptation aftereffects reveal that tactile distance is a basic somatosensory feature
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Adaptation aftereffects reveal that tactile distance is a basic somatosensory feature

机译：Adaptation aftereffects reveal that tactile distance is a basic somatosensory feature

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摘要

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.

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