在对象操纵任务中,跨皮层肌肉协会对不同的触觉感觉产生合效应
Cristian D Guerrero-Mendez1, Cristian F Blanco-Diaz1, Hamilton Rivera-Flor1
1Postgraduate Program in Electrical Engineering, Federal University of Espirito Santo (UFES), Vitória 29075-910, Brazil; cblanco88@uan.edu.co (C.F.B.-D.); hamriver@gmail.com (H.R.-F.); teodiano.bastos@ufes.br (T.F.B.-F.).
NeuroSci
|November 1, 2024
概括
用皮表面对物体进行操纵,可以增强皮质肌肉连接,特别是在Mu和Gamma频率. 这种脑肌沟通洞察力可以改善运动康复策略.
科学领域:
- 神经科学是一个神经科学.
- 生物力学 生物力学
- 人类运动控制人体运动控制
背景情况:
- 在对象操纵过程中缺乏对皮质肌肉连接的定量研究,具有不同的触觉反.
- 连接性分析揭示了运动期间的大脑肌肉通信通道.
- 了解这些通路对于运动控制和康复至关重要.
研究的目的:
- 在使用不同触摸表面 (砂纸,毛皮,丝) 的物体操纵任务中量化检查皮质肌肉连接.
- 研究接触面,脑电图 (EEG) 通道,肌肉和频段对皮质肌肉连接的影响.
- 探索皮质肌肉连接在活跃运动和静止状态期间的作用.
主要方法:
- 利用脑电图 (EEG) 来记录三个道的脑活动,以及12名健康受试者的五个肌肉的脑电图 (EMG).
- 使用基于功率的连接 (PBC) 和相互信息 (MI) 在对象操纵任务中分析皮质肌肉连接.
- 通过不同接触面 (砂纸,毛皮,丝),EEG通道,肌肉和频段 (Mu,Gamma) 的相比连接性.
主要成果:
- 与砂纸和丝相比,苏德的接触面显示出显著更高的皮质肌肉连接性.
- 穆和马频段对皮质肌肉连接有更大的影响.
- 在特定的脑电图通道和前腹肌 (AD) 和臂 (B) 肌肉之间观察到显著的连接性.
- 在活跃运动期间,AD肌肉的皮质肌肉连接性比静止状态时更高.
结论:
- 触觉感觉,特别是苏伊德表面,在对象操纵过程中调节皮质肌肉连接.
- 在这些任务中,Mu和Gamma频段是皮质肌肉通信的关键贡献者.
- 研究结果表明,在开发用于复杂运动的新型,有效的运动康复系统方面,有潜在的应用.
相关概念视频
Somatosensation
36.4K
The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.
36.4K
Muscle Stimulation Frequency
2.0K
The contraction strength of muscles is regulated by motor neurons, which modulate the frequency of action potentials dispatched to the motor units based on the body's requirements. This process of varying the muscle stimulation frequency allows muscles to contract with a force that is precisely tailored to the needs of the moment, whether lifting a feather or a heavy box.
Wave summation
At low firing rates, motor neurons induce individual twitch contractions in muscle fibers. These twitches...
Wave summation
At low firing rates, motor neurons induce individual twitch contractions in muscle fibers. These twitches...
2.0K
Excitation-Contraction Coupling in Skeletal Muscles
7.9K
Excitation-contraction coupling is a series of events that occur between generating an action potential and initiating a muscle contraction. It occurs at the triad, a structure found in skeletal muscle fibers that comprise a T-tubule and terminal cisternae of the sarcoplasmic reticulum on each side. These triads are visible in longitudinally sectioned muscle fibers. They are typically located at the A-I junction — the junction between the A and I bands of the sarcomere.
When an action...
When an action...
7.9K
Somatosensory, Motor, and Association Cortex
415
The somatosensory cortex in the parietal lobes is crucial for interpreting sensory data such as touch, temperature, and proprioception. The somatosensory cortex, situated in the parietal lobes, plays a vital role in interpreting sensory information like touch, temperature, and proprioception—awareness of body position. This specialized brain region features an organized structure wherein neurons at the top primarily process sensations originating from the lower body. In contrast, those at...
415
Motor Unit Stimulation
1.5K
When the neuron of a motor unit fires an action potential, it triggers a series of events, leading to a twitch contraction in the muscle fibers. The process of excitation-contraction coupling is crucial in relaying the action potential to the muscle fibers.
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
1.5K
Association Areas of the Cortex
5.1K
Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
5.1K


