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Task-relevant cognitive and motor functions are prioritized during prolonged speed–accuracy motor task performance

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Abstract

This study aimed to explore the effect of prolonged speed–accuracy motor task on the indicators of psychological, cognitive, psychomotor and motor function. Ten young men aged 21.1 ± 1.0 years performed a fast- and accurate-reaching movement task and a control task. Both tasks were performed for 2 h. Despite decreased motivation, and increased perception of effort as well as subjective feeling of fatigue, speed–accuracy motor task performance improved during the whole period of task execution. After the motor task, the increased working memory function and prefrontal cortex oxygenation at rest and during conflict detection, and the decreased efficiency of incorrect response inhibition and visuomotor tracking were observed. The speed–accuracy motor task increased the amplitude of motor-evoked potentials, while grip strength was not affected. These findings demonstrate that to sustain the performance of 2-h speed–accuracy task under conditions of self-reported fatigue, task-relevant functions are maintained or even improved, whereas less critical functions are impaired.

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Correspondence to Andrius Satas.

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Solianik, R., Satas, A., Mickeviciene, D. et al. Task-relevant cognitive and motor functions are prioritized during prolonged speed–accuracy motor task performance. Exp Brain Res 236, 1665–1678 (2018). https://doi.org/10.1007/s00221-018-5251-1

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  • DOI: https://doi.org/10.1007/s00221-018-5251-1

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