Reference code: | PT/FB/BL-2022-304.02 |
Location: | BF-GMS
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Title:
| Transcranial cortico-cortical paired associative stimulation (ccPAS) over ventral premotor-motor pathways enhances action performance and corticomotor excitability in young adults more than in elderly adults
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Publication year: | 2023
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URL:
| https://www.frontiersin.org/articles/10.3389/fnagi.2023.1119508/full
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Abstract/Results: | ABSTRACT:
Transcranial magnetic stimulation (TMS) methods such as cortico-cortical paired associative stimulation (ccPAS) can increase the strength of functional connectivity between ventral premotor cortex (PMv) and primary motor cortex (M1) via spike timing-dependent plasticity (STDP), leading to enhanced motor functions in young adults. However, whether this STDP-inducing protocol is effective in the aging brain remains unclear. In two groups of young and elderly healthy adults, we evaluated manual dexterity with the 9-hole peg task before and after ccPAS of the left PMv-M1 circuit. We observed that ccPAS enhanced dexterity in young adults, and this effect was anticipated by a progressive increase in motor-evoked potentials (MEPs) during ccPAS administration. No similar effects were observed in elderly individuals or in a control task. Across age groups, we observed that the magnitude of MEP changes predicted larger behavioral improvements. These findings demonstrate that left PMv-to-M1 ccPAS induces functionally specific improvements in young adults' manual dexterity and an increase in corticomotor excitability, but altered plasticity prevents the effectiveness of ccPAS in the elderly.
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Accessibility: | Document exists in file
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Language:
| eng
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Related objects:
| BL-2018-347.25
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Author: | Turrini, S.
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Secondary author(s):
| Bevacqua, N., Cataneo, A., Chiappini, E., Fiori, F., Candidi, M., Avenanti, A.
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Document type:
| Article-d
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Reference:
| Turrini, S., Bevacqua, N., Cataneo, A., Chiappini, E., Fiori, F., Candidi, M., & Avenanti, A. (2023). Transcranial cortico-cortical paired associative stimulation (ccPAS) over ventral premotor-motor pathways enhances action performance and corticomotor excitability in young adults more than in elderly adults. Frontiers in Aging Neuroscience, 15, 1119508. doi: 10.3389/fnagi.2023.1119508
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Indexed document: | Yes
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Keywords: | Hebbian plasticity / Transcranial magnetic stimulation (TMS) / Aging / ccPAS / Manual dexterity / Motor system
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Transcranial cortico-cortical paired associative stimulation (ccPAS) over ventral premotor-motor pathways enhances action performance and corticomotor excitability in young adults more than in elderly adults |