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Article Dans Une Revue Scientific Reports Année : 2018

Vigour of self-paced reaching movement: cost of time and individual traits

Résumé

People usually move at a self-selected pace in everyday life. Yet, the principles underlying the formation of human movement vigour remain unclear, particularly in view of intriguing inter-individual variability. It has been hypothesized that how the brain values time may be the cornerstone of such differences, beyond biomechanics. Here, we focused on the vigour of self-paced reaching movement and assessed the stability of vigour via repeated measurements within participants. We used an optimal control methodology to identify a cost of time (CoT) function underlying each participant’s vigour, considering a model of the biomechanical cost of movement. We then tested the extent to which anthropometric or psychological traits, namely boredom proneness and impulsivity, could account for a significant part of inter-individual variance in vigour and CoT parameters. Our findings show that the vigour of reaching is largely idiosyncratic and tend to corroborate a relation between the relative steepness of the identified CoT and boredom proneness, a psychological trait relevant to one’s relationship with time in decision-making.

Domaines

Neurosciences
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Dates et versions

hal-04262395 , version 1 (27-10-2023)

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Bastien Berret, Carole Castanier, Simon Bastide, Thomas Deroche. Vigour of self-paced reaching movement: cost of time and individual traits. Scientific Reports, 2018, 8 (1), pp.10655. ⟨10.1038/s41598-018-28979-6⟩. ⟨hal-04262395⟩
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