Ohashi Yoshihiro, Kochiyama Takanori, Tsuneyoshi Katsuya, Ohigashi Yoshitaka, Murai Toshiya, Ueda Keita
Graduate School of Human and Environmental Studies.
Department of Rehabilitation.
Neuroreport. 2018 Aug 1;29(11):917-923. doi: 10.1097/WNR.0000000000001053.
Previous human studies on monitoring for visuomotor incongruence emphasized the contribution of the fronto-parietal network and revealed significant activation of the right dorsolateral prefrontal cortex (DLPFC) and the right rostral inferior parietal lobule. Using functional MRI, this study investigated the brain regions involved in explicit monitoring for incongruence between motor intention and visual and/or proprioceptive information, particularly focusing on the fronto-parietal network. During in-phase bimanual movements, a static image of the participant's own hands was randomly inserted within real-time visual feedback of the movements to produce a mismatch between the actual performance and the visual input. The results of our task were similar to those of previous studies, in that greater activity was observed in the right DLPFC during incongruence conditions than during congruence conditions. However, the anatomical location of the DLPFC cluster was found in a more ventral region, compared with previous studies. Psychophysiological interaction analysis for the entire brain, using the right DLPFC as a seed region, indicated significantly greater functional connectivity with the bilateral dorsal premotor cortex, middle temporal gyri (area V5), and right rostral inferior parietal lobule (area PFt).
先前关于视觉运动不一致监测的人体研究强调了额顶叶网络的作用，并揭示了右侧背外侧前额叶皮层（DLPFC）和右侧喙部下顶叶小叶的显著激活。本研究使用功能磁共振成像，调查了参与明确监测运动意图与视觉和/或本体感觉信息之间不一致的脑区，特别关注额顶叶网络。在同相双手运动期间，参与者自己双手的静态图像被随机插入运动的实时视觉反馈中，以在实际表现和视觉输入之间产生不匹配。我们任务的结果与先前研究相似，即在不一致条件下比在一致条件下右侧DLPFC观察到更大的活动。然而，与先前研究相比，DLPFC簇的解剖位置位于更腹侧的区域。以右侧DLPFC作为种子区域对全脑进行心理生理交互分析，结果表明与双侧背侧运动前皮层、颞中回（V5区）和右侧喙部下顶叶小叶（PFt区）的功能连接显著更强。
