Tool Use Modulates Somatosensory Cortical Processing in Humans.
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| Title: | Tool Use Modulates Somatosensory Cortical Processing in Humans. |
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| Authors: | Miller, Luke E. (AUTHOR), Longo, Matthew R. (AUTHOR), Saygin, Ayse P. (AUTHOR) |
| Source: | Journal of Cognitive Neuroscience. Dec2019, Vol. 31 Issue 12, p1782-1795. 14p. 2 Diagrams, 2 Charts, 4 Graphs. |
| Subjects: | Somatosensory evoked potentials, Somatosensory cortex, Median nerve, Neural stimulation, Sensorimotor integration |
| Abstract: | Tool use leads to plastic changes in sensorimotor body representations underlying tactile perception. The neural correlates of this tool-induced plasticity in humans have not been adequately characterized. This study used ERPs to investigate the stage of sensory processing modulated by tool use. Somatosensory evoked potentials, elicited by median nerve stimulation, were recorded before and after two forms of object interaction: tool use and hand use. Compared with baseline, tool use—but not use of the hand alone—modulated the amplitude of the P100. The P100 is a mid-latency component that indexes the construction of multisensory models of the body and has generators in secondary somatosensory and posterior parietal cortices. These results mark one of the first demonstrations of the neural correlates of tool-induced plasticity in humans and suggest that tool use modulates relatively late stages of somatosensory processing outside primary somatosensory cortex. This finding is consistent with what has been observed in tool-trained monkeys and suggests that the mechanisms underlying tool-induced plasticity have been preserved across primate evolution. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Cognitive Neuroscience is the property of MIT Press and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Psychology and Behavioral Sciences Collection |
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