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- Title
The Effectiveness of Paired Associative Stimulation on Motor Recovery after Stroke: A Scoping Review.
- Authors
Baroni, Andrea; Antonioni, Annibale; Fregna, Giulia; Lamberti, Nicola; Manfredini, Fabio; Koch, Giacomo; D'Ausilio, Alessandro; Straudi, Sofia
- Abstract
Paired associative stimulation (PAS) is a non-invasive brain stimulation technique combining transcranial magnetic stimulation and peripheral nerve stimulation. PAS allows connections between cortical areas and peripheral nerves (C/P PAS) or between cortical regions (C/C PAS) to be strengthened or weakened by spike-timing-dependent neural plasticity mechanisms. Since PAS modulates both neurophysiological features and motor performance, there is growing interest in its application in neurorehabilitation. We aimed to synthesize evidence on the motor rehabilitation role of PAS in stroke patients. We performed a literature search following the PRISMA Extension for Scoping Reviews Framework. Eight studies were included: one investigated C/C PAS between the cerebellum and the affected primary motor area (M1), seven applied C/P PAS over the lesional, contralesional, or both M1. Seven studies evaluated the outcome on upper limb and one on lower limb motor recovery. Although several studies omit crucial methodological details, PAS highlighted effects mainly on corticospinal excitability, and, more rarely, an improvement in motor performance. However, most studies failed to prove a correlation between neurophysiological changes and motor improvement. Although current studies seem to suggest a role of PAS in post-stroke rehabilitation, their heterogeneity and limited number do not yet allow definitive conclusions to be drawn.
- Subjects
TRANSCRANIAL magnetic stimulation; BRAIN stimulation; NEURAL stimulation; PYRAMIDAL tract; NEUROPLASTICITY; PERIPHERAL nervous system; PREMOTOR cortex
- Publication
Neurology International, 2024, Vol 16, Issue 3, p567
- ISSN
2035-8377
- Publication type
Article
- DOI
10.3390/neurolint16030043