两侧运动网络在上肢运动中的作用
Hao Ding1,2, Nelly Seusing3, Bahman Nasseroleslami2
1Department of Neurology, University Hospital Würzburg, Würzburg, Germany.
Frontiers in physiology
|July 19, 2023
概括
双侧运动网络,包括主要运动皮质 (M1) 和前运动皮质 (PM),对于自愿运动的规划和协调至关重要. 它的连接模式在不同的运动任务中动态变化,影响运动执行.
科学领域:
- 神经科学是一个神经科学.
- 发动机控制器的控制器
- 认知神经科学 认知神经科学
背景情况:
- 自愿运动主要由对侧脑半球控制.
- 双侧运动网络 (M1,SMA,PM) 在运动规划和执行方面发挥着重要作用.
- 在ipsilateral电机网络中,精确的功能和特定任务的相互作用需要进一步阐明.
研究的目的:
- 为了研究不同电机任务期间在ipsilateral电机网络内的功能连接.
- 探索侧运动网络在运动规划和协调中的作用.
- 为了确定 ipsilateral 电机网络连接如何与电机唤起的潜力相关.
主要方法:
- 功能性MRI (fMRI) 用于扫描20名健康参与者进行双边,单边和双边曲延伸任务.
- 从感兴趣的动力区域 (M1,SMA,PMv,PMd) 提取时间序列数据.
- 使用时间解决的部分定向连贯性计算定向功能连接性.
主要成果:
- 与双边曲相比,在单边曲过程中,左侧PMv与双边M1以及右侧PMv与双边SMA的连接性增加.
- 在不同运动任务中,在M1,SMA和PM区域之间观察到变化的连接模式.
- 在右-M1到右-SMA连接和在双边曲延伸过程中引起的ipsilateral电机潜力之间发现了负关系.
结论:
- 双侧运动网络在自愿运动中发挥着重要作用,支持规划和协调.
- 在ipsilateral电机网络中的特定任务连接变化突出了其在电机控制中的动态参与.
- 双边M1-SMA连接在复杂的双边运动期间调节M1激活.
相关概念视频
Direct Motor Pathways
2.1K
The direct motor pathways, also known as the pyramidal tracts, are a group of neural pathways that originate in the brain and descend through the spinal cord. They control the voluntary movement of the body. There are two major direct motor pathways: the corticospinal and the corticobulbar tracts.
The corticospinal tract is responsible for the voluntary movement of the limbs and trunk. It originates in the cerebral cortex of the brain and descends through the cerebrum's internal capsule and...
The corticospinal tract is responsible for the voluntary movement of the limbs and trunk. It originates in the cerebral cortex of the brain and descends through the cerebrum's internal capsule and...
2.1K
Indirect Motor Pathways
1.6K
The indirect motor or extrapyramidal pathways originate in the brainstem, the lower portion of the brain that connects it to the spinal cord. They consist of several distinct tracts, each with specialized functions. The four main tracts of the indirect motor pathways are the vestibulospinal tract, the reticulospinal tract, the tectospinal tract, and the rubrospinal tract.
The vestibulospinal tract originates in the vestibular nuclei of the brainstem. The vestibular system detects changes in...
The vestibulospinal tract originates in the vestibular nuclei of the brainstem. The vestibular system detects changes in...
1.6K
Brainstem
2.2K
The brainstem, located inferior to the brain and superior to the spinal cord, serves as a bridge between the cerebrum and the spinal cord. It plays a vital role in relaying information and controlling critical life functions. It comprises three primary regions: the midbrain, pons, and medulla oblongata.
The Midbrain
The midbrain is located beneath the diencephalon and connects the cerebrum with the lower parts of the brain. The cerebral peduncles are prominent midbrain structures that house the...
The Midbrain
The midbrain is located beneath the diencephalon and connects the cerebrum with the lower parts of the brain. The cerebral peduncles are prominent midbrain structures that house the...
2.2K
Spinal Nerves: Plexus I
1.1K
Nerve plexuses are networks of interlacing nerves that serve as communication hubs to distribute and organize nerve action across various body regions. The nerve plexuses are organized into the cervical plexus located in the neck region, brachial plexus in the shoulder area, lumbar plexus found in the lower back, sacral plexus situated in the pelvis, and coccygeal plexus located in the coccygeal region.
The Cervical Plexus
The cervical plexus, formed by the anterior rami of the first four...
The Cervical Plexus
The cervical plexus, formed by the anterior rami of the first four...
1.1K
Diencephalon: Thalamus and Information Relay
1.7K
The thalamus, often called “the gateway to the cerebral cortex,” is vital in processing and directing sensory and motor signals throughout the brain. Almost all inputs destined for the cerebral cortex, except for olfactory signals, are relayed through the thalamus. The thalamus is a sophisticated relay station, channeling information from various brain regions to the cerebral cortex, as well as a filter, prioritizing certain signals over others based on current physiological...
1.7K
Major Somatic Sensory Pathways
1.0K
Sensory impulses related to touch, pressure, vibration, and proprioception from various body parts, such as the limbs, trunk, neck, and posterior head, travel to the cerebral cortex through the posterior column-medial lemniscus pathway. The pathway’s name derives from the two white-matter tracts that convey the impulses: the spinal cord's posterior column and the brainstem's medial lemniscus. First-order sensory neurons extend their axons into the spinal cord, forming the...
1.0K


