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Effect of acute physical exercise on motor sequence memory.

Abstract：

:Acute physical exercise improves memory functions by increasing neural plasticity in the hippocampus. In animals, a single session of physical exercise has been shown to boost anandamide (AEA), an endocannabinoid known to promote hippocampal plasticity. Hippocampal neuronal networks encode episodic memory representations, including the temporal organization of elements, and can thus benefit motor sequence learning. While previous work established that acute physical exercise has positive effects on declarative memory linked to hippocampal plasticity mechanisms, its influence on memory for motor sequences, and especially on neural mechanisms underlying possible effects, has been less investigated. Here we studied the impact of acute physical exercise on motor sequence learning, and its underlying neurophysiological mechanisms in humans, using a cross-over randomized within-subjects design. We measured behavior, fMRI activity, and circulating AEA levels in fifteen healthy participants while they performed a serial reaction time task before and after a short period of exercise (moderate or high intensity) or rest. We show that exercise enhanced motor sequence memory, significantly for high intensity exercise and tending towards significance for moderate intensity exercise. This enhancement correlated with AEA increase, and dovetailed with local increases in caudate nucleus and hippocampus activity. These findings demonstrate that acute physical exercise promotes sequence learning, thus attesting the overarching benefit of exercise to hippocampus-related memory functions.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Marin Bosch B,Bringard A,Logrieco MG,Lauer E,Imobersteg N,Thomas A,Ferretti G,Schwartz S,Igloi K

doi

10.1038/s41598-020-72108-1

subject

Has Abstract

pub_date

2020-09-18 00:00:00

pages

15322

issue

1

issn

2045-2322

pii

10.1038/s41598-020-72108-1

journal_volume

10

pub_type

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