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- W4206178767 abstract "Motor imagery supports motor learning and performance, having the potential to be a useful tool for neurorehabilitation. However, motor imagery ability may be impacted by ageing and neurodegeneration, which could limit its therapeutic effectiveness. Motor imagery can be assessed implicitly using a hand laterality task (HLT), whereby laterality judgements are slower for stimuli corresponding to physically more difficult postures, as indicated by a “biomechanical constraint” effect for lateral versus medial orientations. Performance is also found to differ between back and palm views of the hand, which may differentially recruit visual and sensorimotor processes. Older adults are generally found to be slower at laterality judgement and show increased biomechanical effects than younger adults, and individuals with Parkinson’s disease (PD) have also shown altered performance. However, the effects of both ageing and PD on laterality judgements for the different hand views (back and palm) have not been examined within the same study.The present study compared healthy younger, healthy older, and PD groups on HLT performance from back and palm views, as well as an object-based mental rotation task and an explicit motor imagery measure (vividness questionnaire). The older and PD groups were slower than the young groups on the HLT, particularly when judging laterality from the back view, and exhibited increased biomechanical constraint effects for the palm. While response times were generally similar between older and PD groups, the PD group showed reduced accuracy for the back view. Letter rotation was slower and less accurate only in the PD group. There was no significant difference between groups in explicit motor imagery. These results suggest that motor imagery may be slowed but relatively preserved in both typical ageing and neurodegeneration, while a PD-specific impairment in visuospatial processing may influence task performance. The findings have implications for the use of motor imagery in rehabilitation protocols." @default.
- W4206178767 created "2022-01-26" @default.
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- W4206178767 date "2022-01-08" @default.
- W4206178767 modified "2023-10-10" @default.
- W4206178767 title "Mental rotation of hands and objects in ageing and Parkinson’s disease: Differentiating motor imagery and visuospatial ability" @default.
- W4206178767 doi "https://doi.org/10.31234/osf.io/3t9kv" @default.
- W4206178767 hasPublicationYear "2022" @default.
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