Effects of an external compared to an internal focus of attention on the excitability of fast and slow(er) motor pathways
| Autor: | Martin Keller, Yves-Alain Kuhn, Wolfgang Taube, Sven Egger |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Adult
Male Focus (geometry) Science Economic strategy Efferent Pathways Article H-Reflex Surround inhibition Medicine Humans Attention Multidisciplinary business.industry Motor Cortex Neurophysiology Motor Pathways Cortex (botany) Motor task Intracortical inhibition business Neuroscience Psychomotor Performance |
| Zdroj: | Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021) Scientific Reports |
| ISSN: | 2045-2322 |
| Popis: | The neurophysiological mechanisms underlying the behavioural improvements usually associated with an external (EF) compared with an internal focus of attention (IF) remain poorly investigated. Surround inhibition in the primary cortex has been shown to be more pronounced with an EF, indicating a more spatial restriction of the motor command. However, the influence of different foci on the temporal aspect of the motor command, such as the modulation of fast versus slow(er) motor pathways, remains unknown and was therefore investigated in this study. Fourteen participants were asked to press on a pedal with the right foot to match its position with a target line displayed on a screen. The deviation of the pedal from the target line was used as a behavioural parameter and compared between both foci (EF vs IF). Additionally, conditioned H-reflexes were evoked during the motor task to assess the excitability of fast (direct) and slower (more indirect) motor pathways when adopting an EF or IF. With an EF compared to an IF, the motor performance was enhanced (P = .001; + 24%) and the activation of slow(er) motor pathways was reduced (P |
| Databáze: | OpenAIRE |
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