Intramanual and intermanual transfer of the curvature aftereffect

Bernard J. Van der Horst, Maarten J A Duijndam, Myrna F M Ketels, Martine T J M Wilbers, Sandra A. Zwijsen, Astrid M.L. Kappers

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Abstract

The existence and transfer of a haptic curvature aftereffect was investigated to obtain a greater insight into neural representation of shape. The haptic curvature aftereffect is the phenomenon whereby a flat surface is judged concave if the preceding touched stimulus was convex and vice versa. Single fingers were used to touch the subsequently presented stimuli. A substantial aftereffect was found when the adaptation surface and the test surface were touched by the same finger. Furthermore, a partial, but significant transfer of the aftereffect was demonstrated between fingers of the same hand and between fingers of both the hands. These results provide evidence that curvature information is not only represented at a level that is directly connected to the mechanoreceptors of individual fingers but is also represented at a stage in the somatosensory cortex shared by the fingers of both the hands.
Original languageEnglish
Pages (from-to)491-496
JournalExperimental Brain Research
Volume187
Issue number3
DOIs
Publication statusPublished - 2008
Externally publishedYes

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    Van der Horst, B. J., Duijndam, M. J. A., Ketels, M. F. M., Wilbers, M. T. J. M., Zwijsen, S. A., & Kappers, A. M. L. (2008). Intramanual and intermanual transfer of the curvature aftereffect. Experimental Brain Research, 187(3), 491-496. https://doi.org/10.1007/s00221-008-1390-0