在运动技能的发展过程中,背侧前额叶皮层和初级运动皮层的可分离因果作用
Quynh N Nguyen1, Katherine J Michon1, Michael Vesia2
1Department of Psychology, University of Michigan, Ann Arbor, Michigan 48109.
概括
运动技能学习涉及不同的大脑区域. 虽然背侧前额皮层 (DLPFC) 对新手至关重要,但它的作用随着专业知识的发展而演变,挑战了现有的运动控制模型.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 发动机控制器的控制器
背景情况:
- 已建立的模型表明,运动学习从需要努力,需要注意力的控制 (背侧前额叶皮层 - DLPFC) 转向自动,无需努力的表现 (初级运动皮层 - M1).
- 在从新手到专家的过渡期间,大脑区域参与的精确动态仍然不清楚,部分原因是培训时间有限,并在之前的研究中依赖相关方法.
研究的目的:
- 为了研究背侧前额皮层 (DLPFC) 和初级运动皮层 (M1) 在长期学习运动技能的因果作用.
- 为了检查这些大脑区域的重要性如何随着个人从新手到专家技能水平的进步而变化.
主要方法:
- 人类参与者 (两性) 接受了为期6周的离散运动测序任务培训.
- 在不同专业水平的任务执行前,使用重复性跨膜磁刺激 (rTMS) 暂时扰乱DLPFC和M1中的活动.
主要成果:
- 随着培训的进展,DLPFC的中断导致了新手技能的更大缺口,而M1的中断则导致了更大的缺口.
- 在所有训练级别的前额外干扰后,观察到绩效缺陷,这表明DLPFC的持续作用.
- 结果证实了DLPFC和M1的不可分割的重要性,在整个学习过程中,它们的角色在不断演变.
结论:
- 这些发现挑战了现有的模型,证明了背侧前额叶皮层 (DLPFC) 在运动技能获得过程中的作用在不断演变,而不是严格减少.
- 无论是DLPFC还是M1,都在运动学习中发挥着关键的,但又独特且动态变化的因果作用.
- 扩展培训显示,前额叶皮质在各专业水平的运动技能表现中持续参与.
相关概念视频
01:14Motor and Sensory Areas of the Cortex
2.6K
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...
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...
2.6K
01:14Role of Cerebellum and Prefrontal Cortex in Memory
247
The cerebellum, while traditionally associated with motor control, also plays a crucial role in memory, particularly in procedural memory, which involves learning motor tasks that become automatic through repetition. For example, studies have shown that when the cerebellum is damaged, individuals or animals lose the ability to learn conditioned motor responses, such as the conditioned eye-blink response in classical conditioning experiments with rabbits. This study demonstrates the...
247
01:11Direct Motor Pathways
1.7K
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...
1.7K
01:24Somatosensory, Motor, and Association Cortex
327
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...
327
01:18Hierarchy of Motor Control
2.3K
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.
2.3K
01:21Association Areas of the Cortex
4.7K
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,...
4.7K