1. Impact of handedness on interlimb transfer depending on the task complexity combined with motor and cognitive skills.
- Author
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Wang, YiFan, Zhao, Jun, Inada, Hitoshi, Négyesi, János, and Nagatomi, Ryoichi
- Subjects
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MOTOR ability , *HANDEDNESS , *MOTOR learning , *TRANSFER of training , *TASK performance , *TASKS - Abstract
• Task complexity for skilled motor practice gave different effects on interlimb transfer between right- and left-handed. • The simple task failed to improve performance on the right hand after left-hand motor practice in right-handed subjects. • The complex task resulted in performance improvement on non-trained hands by contralateral motor practice. • A certain level of appropriate complexity is necessary to detect inter-limb transfers in motor learning in right-handed. Task complexity could affect acquisition efficiency of motor skills and interlimb transfer; however, how task complexity affects interlimb transfer remains unclear. We hypothesized that left- and right-handed participants may have different interlimb transfer efficiency depending on the task complexity. Left-hand (n = 28) and right-hand (n = 28) dominant participants (age = 24.70 ± 4.02 years, male:female = 28:28) performed a finger sequence test with two levels of complexity (simple: one-digit with four fingers vs. complex: two-digit with five fingers) before and after ten trials of 2-min practice each on the same apparatus. The speed and task errors were measured and analyzed. Right-handed participants failed to improve performance on their right hand (non-trained hand) after contralateral left-hand practice in the simple finger sequence task. In contrast, the left-handed participants improved performance on non-trained hands both right and left after contralateral practices. In the complex task, however, both the left- and right-handed participants improved performance on non-trained hands by contralateral practices. Our results showed that task complexity of skilled practice gave different effects on interlimb transfer between right- and left-handed subjects. It appears that a certain level of appropriate complexity is necessary to detect inter-limb transfers in motor learning in right-handed subjects. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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