上丘运动区不会对人类的手指敲击运动做出反应。

The superior colliculus motor region does not respond to finger tapping movements in humans.

机构信息

Division of Neuropsychology, Center of Neurology, Hertie Institute for Clinical Brain Research, University of Tübingen, Tübingen, Germany.

Graduate Training Centre of Neuroscience, University of Tübingen, Tübingen, Germany.

出版信息

Sci Rep. 2024 Jan 20;14(1):1769. doi: 10.1038/s41598-024-51835-9.

Abstract

Electrophysiological studies in macaques and functional neuroimaging in humans revealed a motor region in the superior colliculus (SC) for upper limb reaching movements. Connectivity studies in macaques reported direct connections between this SC motor region and cortical premotor arm, hand, and finger regions. These findings motivated us to investigate if the human SC is also involved in sequential finger tapping movements. We analyzed fMRI task data of 130 subjects executing finger tapping from the Human Connectome Project. While we found strong signals in the SC for visual cues, we found no signals related to simple finger tapping. In subsequent experimental measurements, we searched for responses in the SC corresponding to complex above simple finger tapping sequences. We observed expected signal increases in cortical motor and premotor regions for complex compared to simple finger tapping, but no signal increases in the motor region of the SC. Despite evidence for direct anatomical connections of the SC motor region and cortical premotor hand and finger areas in macaques, our results suggest that the SC is not involved in simple or complex finger tapping in humans.

摘要

在猕猴中的电生理学研究和人类中的功能神经影像学研究揭示了上丘(SC)中用于上肢伸展运动的运动区域。在猕猴中的连接研究报告了该 SC 运动区域与皮质运动前臂、手和手指区域之间的直接连接。这些发现促使我们研究人类 SC 是否也参与了顺序手指敲击运动。我们分析了来自人类连接组计划的 130 名执行手指敲击的受试者的 fMRI 任务数据。虽然我们在 SC 中发现了视觉提示的强烈信号,但我们没有发现与简单手指敲击相关的信号。在随后的实验测量中,我们在 SC 中寻找与复杂手指敲击序列对应的响应。我们观察到皮质运动和运动前区对复杂手指敲击的预期信号增加,而 SC 的运动区没有信号增加。尽管有证据表明 SC 运动区和皮质运动前手和手指区域在猕猴中有直接的解剖连接,但我们的结果表明,SC 不参与人类的简单或复杂手指敲击。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2e17/10798994/98449eb5c13a/41598_2024_51835_Fig1_HTML.jpg

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