相关实验视频
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Corticospinal Excitability Modulation During Action Observation
Published on: December 31, 2013
补充运动区域细胞在预先计划几次运动中的作用
Nature
|September 29, 1994
概括
研究人员在补充运动区域发现了追踪运动序列的脑细胞. 这些细胞有助于规划和编码实现目标的多种运动.
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:
- 意志目标需要按照特定的时间顺序执行运动.
- 在没有外部指导的情况下,重复的运动序列被记住并执行.
- 存储有序运动信息的神经基础仍然不清楚.
研究的目的:
- 为了确定大脑区域和细胞机制,参与存储信息的有序运动序列.
- 研究特定皮层区域在规划和执行多动作序列中的作用.
主要方法:
- 在训练进行运动任务的子中进行了电生理学记录.
- 在补充运动区域和主要运动皮层中分析了细胞活动.
- 研究了神经活动和顺序运动执行之间的关系.
主要成果:
- 补充运动区域的一个特定细胞组显示出与有序运动序列相关的活动.
- 在初级运动皮层中没有观察到这种连续活动.
- 这些发现表明,补充运动区域在运动序列中起着特殊的作用.
结论:
- 补充运动区域的细胞为即将到来的运动顺序提供信号.
- 这种神经信号对于预先计划和编码多个运动至关重要.
- 补充运动区域在连续行动的神经表现中起着关键作用.
相关概念视频
Motor and Sensory Areas of the Cortex
The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex.
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex.
Diencephalon: Thalamus and Information Relay
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 states or needs.
Brainstem
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...
Hierarchy of Motor Control
The hierarchy of motor control refers to the different levels of organization and processing involved in controlling movement in the body. These levels range from higher cortical areas involved in planning and decision-making to lower spinal cord reflexes that respond automatically to external stimuli.
Direct Motor Pathways
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...
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...
Indirect Motor Pathways
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...

