Frank, Sebastian M. and Otto, Alexandra and Volberg, Gregor and Tse, Peter U. and Watanabe, Takeo and Greenlee, Mark W. (2022) Transfer of Tactile Learning from Trained to Untrained Body Parts Supported by Cortical Coactivation in Primary Somatosensory Cortex. JOURNAL OF NEUROSCIENCE, 42 (31). pp. 6131-6144. ISSN 0270-6474, 1529-2401
Full text not available from this repository. (Request a copy)Abstract
A pioneering study by Volkmann (1858) revealed that training on a tactile discrimination task improved task performance, indicative of tactile learning, and that such tactile learning transferred from trained to untrained body parts. However, the neural mechanisms underlying tactile learning and transfer of tactile learning have remained unclear. We trained groups of human subjects (female and male) in daily sessions on a tactile discrimination task either by stimulating the palm of the right hand or the sole of the right foot. Task performance before training was similar between the palm and sole. Posttraining transfer of tactile learning was greater from the trained right sole to the untrained right palm than from the trained right palm to the untrained right sole. Functional magnetic resonance imaging (fMRI) and multivariate pattern classi-fication analysis revealed that the somatotopic representation of the right palm in contralateral primary somatosensory cortex (SI) was coactivated during tactile stimulation of the right sole. More pronounced coactivation in the cortical representation of the right palm was associated with lower tactile performance for tactile stimulation of the right sole and more pronounced subsequent transfer of tactile learning from the trained right sole to the untrained right palm. In contrast, coactivation of the cortical sole representation during tactile stimulation of the palm was less pronounced and no association with tactile performance and subsequent transfer of tactile learning was found. These results indicate that tactile learning may transfer to untrained body parts that are coactivated to support tactile learning with the trained body part.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SURFACE-BASED ANALYSIS; SOMATOTOPIC ORGANIZATION; VISUAL AREAS; HAND; REPRESENTATION; FOOT; INFORMATION; PLASTICITY; FEEDBACK; FINGERS; coactivation; perceptual learning; primary somatosensory cortex; somatosensory system; tactile plasticity; transfer |
| Subjects: | 100 Philosophy & psychology > 150 Psychology 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Kinder- und Jugendpsychiatrie Human Sciences > Institut für Psychologie > Lehrstuhl für Psychologie I (Allgemeine Psychologie I und Methodenlehre) - Prof. Dr. Mark W. Greenlee |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Feb 2024 10:43 |
| Last Modified: | 14 Feb 2024 10:43 |
| URI: | https://pred.uni-regensburg.de/id/eprint/57384 |
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