Daily modulation of the speed-accuracy trade-off

Neuroscience
Nicolas GueugneauCharalambos Papaxanthis

Abstract

Goal-oriented arm movements are characterized by a balance between speed and accuracy. The relation between speed and accuracy has been formalized by Fitts' law and predicts a linear increase in movement duration with task constraints. Up to now this relation has been investigated on a short-time scale only, that is during a single experimental session, although chronobiological studies report that the motor system is shaped by circadian rhythms. Here, we examine whether the speed-accuracy trade-off could vary during the day. Healthy adults carried out arm-pointing movements as accurately and fast as possible toward targets of different sizes at various hours of the day, and variations in Fitts' law parameters were scrutinized. To investigate whether the potential modulation of the speed-accuracy trade-off has peripheral and/or central origins, a motor imagery paradigm was used as well. Results indicated a daily (circadian-like) variation for the durations of both executed and mentally simulated movements, in strictly controlled accuracy conditions. While Fitts' law was held for the whole sessions of the day, the slope of the relation between movement duration and task difficulty expressed a clear modulation, with the lowest va...Continue Reading

References

Feb 1, 1990·Neurology·E B Montgomery, J Nuessen
Oct 24, 2001·Brain : a Journal of Neurology·A BerardelliM Hallett
Oct 26, 1961·The New England Journal of Medicine·A C ENGLAND, R S SCHWAB
Mar 2, 2013·PloS One·Nicolas GueugneauCharalambos Papaxanthis
Mar 24, 2015·Neuroscience·R J Gentili, C Papaxanthis

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Citations

Apr 24, 2018·Multivariate Behavioral Research·Paolo GhislettaFlorian Schmiedek
Jul 20, 2018·Behavior Research Methods·Heinrich René Liesefeld, Markus Janczyk
Jan 26, 2021·Frontiers in Psychology·Thomas JacquetRomuald Lepers

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