When one finger touches the other, the resulting tactile sensation is perceived as weaker than the same stimulus externally imposed. This attenuation of sensation could result from a predictive process that subtracts the expected sensory consequences of the action, or from a postdictive process that alters the perception of sensations that are judged after the event to be self-generated. In this study we observe attenuation even when the fingers unexpectedly fail to make contact, supporting a predictive process. This predictive attenuation of self-generated sensation may have evolved to enhance the perception of sensations with an external cause.
Attenuation of Self-Generated Tactile Sensations Is Predictive, not Postdictive
P. Bays,J. Flanagan,D. M. Wolpert,D. M. Wolpert
Published 2006 in PLoS Biology
ABSTRACT
PUBLICATION RECORD
- Publication year
2006
- Venue
PLoS Biology
- Publication date
2006-01-17
- Fields of study
Biology, Medicine, Psychology
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
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