Department of Sports Medicine, Osaka City University Graduate School of Medicine, Osaka City, Osaka, Japan.
PLoS One. 2021 Jul 23;16(7):e0255272. doi: 10.1371/journal.pone.0255272. eCollection 2021.
The alterations in neural activity related to the improvement of cognitive performance, which would be leading to better academic performance, remain poorly understood. In the present study, we assessed neural activity related to the improvement of task performance resulting from academic rewards. Twenty healthy male volunteers participated in this study. All participants performed four sessions of a 1-back-Stroop task under both target and control conditions. An image indicating that the task performance of each participant was above average and categorized as being at almost the highest level was presented immediately after each session under the target condition, whereas a control image did not indicate task performance. Neural activity during the 1-back-Stroop task was recorded by magnetoencephalography. The correction rate of the 1-back-Stroop task in the final session relative to that in the first under the target condition was increased compared with the control condition. Correlation analysis revealed that the decreases in alpha band power in right Brodmann's area (BA) 47 and left BA 7 were positively associated with the increased correction rate caused by the target condition. These findings are expected to contribute to a better understanding of the neural mechanisms underlying the improvement of cognitive performance.
与认知表现改善相关的神经活动变化，进而导致更好的学业表现，目前仍不甚了解。本研究旨在评估与学业奖励相关的任务表现改善所引起的神经活动变化。20 名健康男性志愿者参与了本研究。所有参与者在目标和控制条件下完成了四次 1 -back-Stroop 任务。在目标条件下，每次任务完成后，会立即呈现一张图像，表示参与者的任务表现高于平均水平，且归类为几乎最高水平，而控制条件下则不呈现图像。通过脑磁图记录参与者在 1-back-Stroop 任务期间的神经活动。与控制条件相比，目标条件下最后一次任务的 1-back-Stroop 任务的校正率较首次任务有所提高。相关分析表明，右侧 Brodmann 区（BA）47 和左侧 BA7 的α波段功率降低与目标条件引起的校正率增加呈正相关。这些发现有望有助于更好地理解认知表现改善的神经机制。
