Soga Keishi, Kamijo Keita, Masaki Hiroaki
1 Waseda University.
J Sport Exerc Psychol. 2017 Aug 1;39(4):249-260. doi: 10.1123/jsep.2016-0254. Epub 2017 Oct 6.
We investigated how aerobic exercise during encoding affects hippocampus-dependent memory through a source memory task that assessed hippocampus-independent familiarity and hippocampus-dependent recollection processes. Using a within-participants design, young adult participants performed a memory-encoding task while performing a cycling exercise or being seated. The subsequent retrieval phase was conducted while sitting on a chair. We assessed behavioral and event-related brain potential measures of familiarity and recollection processes during the retrieval phase. Results indicated that source accuracy was lower for encoding with exercise than for encoding in the resting condition. Event-related brain potential measures indicated that the parietal old/new effect, which has been linked to recollection processing, was observed in the exercise condition, whereas it was absent in the rest condition, which is indicative of exercise-induced hippocampal activation. These findings suggest that aerobic exercise during encoding impairs hippocampus-dependent memory, which may be attributed to inefficient source encoding during aerobic exercise.
我们通过一项源记忆任务，研究了编码过程中的有氧运动如何影响海马体依赖的记忆，该任务评估了海马体非依赖的熟悉度和海马体依赖的回忆过程。采用被试内设计，年轻成年参与者在进行骑自行车运动或坐着时执行记忆编码任务。随后的检索阶段是坐在椅子上进行的。我们评估了检索阶段熟悉度和回忆过程的行为及事件相关脑电位指标。结果表明，与静息状态下的编码相比，运动时编码的源准确性较低。事件相关脑电位指标表明，与回忆过程相关的顶叶新旧效应在运动条件下被观察到，而在静息条件下不存在，这表明运动诱导了海马体激活。这些发现表明，编码过程中的有氧运动损害了海马体依赖的记忆，这可能归因于有氧运动期间源编码效率低下。
