神经生物学ppt课件:7神经系统对运动的调节.ppt
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Central Nervous System Control of Movement
XING, GUOGANG(邢国刚), MD. Ph.D.
北京大学 神经科学研究所
Neuroscience Research Institute, Peking University
Email address: ggxing@bjmu.edu.cn
Introduction
* 生命在于运动......
* 运动是动物维系个体生存和种族繁衍的基本功能之一
How does a coordinated movement achieved ?
The motor control hierarchy have three levels
* The highest level- strategy
> Represented by the association areas of neocortex and basal ganglia of the forebrain
> Is concerned with strategy:
?a The goal of the movement and the movement strategy that best achieves the goal
The motor control hierarchy have three levels
* The middle level-tactics
> Represented by the motor cortex and cerebellum
> Is concerned with tactics
- The sequences of muscle contractions
? Arranged in space and time
? Required to smoothly and accurately achieve the strategic goal
The motor control hierarchy have three levels
* The lowest level- execution
> Represented by the brain stem and spinal cord
> Is concerned with execution
- Action of the motor neuron and interneuron pools that generate the goal-directed movement and make any necessary adjustments of posture
Overview
* 脊髓内的"下运动神经元(Lower neurons)?±￡?除了受到脊髓内局部环路的影响外，还受到大脑皮层运动区及脑干中许多"上运动神经元(Upper neurons)?±的支配和协调
* 基底神经节和小脑则向那些上运动神经元提供某种感觉、认知或感性的信息，使运动更加精确和协调
�
Part 1
Spinal Control of Movement
Introduction
* "running around like a chicken with its head cut off"
* The rhythmic movements could be elicited in the hind legs of cats and dogs long after their spinal cords had been severed from the rest of the central nervous system
-Charles Sherington & Graham Brown (English)
- The importance of circuitry within the spinal cord for the coordinated control of movements
Spinal circuitry control of movement
Spinal motor neurons
* Alpha motor neurons
Innervate skeletal muscle (extrafusal muscle) ......
Central Nervous System Control of Movement
XING, GUOGANG(邢国刚), MD. Ph.D.
北京大学 神经科学研究所
Neuroscience Research Institute, Peking University
Email address: ggxing@bjmu.edu.cn
Introduction
* 生命在于运动......
* 运动是动物维系个体生存和种族繁衍的基本功能之一
How does a coordinated movement achieved ?
The motor control hierarchy have three levels
* The highest level- strategy
> Represented by the association areas of neocortex and basal ganglia of the forebrain
> Is concerned with strategy:
?a The goal of the movement and the movement strategy that best achieves the goal
The motor control hierarchy have three levels
* The middle level-tactics
> Represented by the motor cortex and cerebellum
> Is concerned with tactics
- The sequences of muscle contractions
? Arranged in space and time
? Required to smoothly and accurately achieve the strategic goal
The motor control hierarchy have three levels
* The lowest level- execution
> Represented by the brain stem and spinal cord
> Is concerned with execution
- Action of the motor neuron and interneuron pools that generate the goal-directed movement and make any necessary adjustments of posture
Overview
* 脊髓内的"下运动神经元(Lower neurons)?±￡?除了受到脊髓内局部环路的影响外，还受到大脑皮层运动区及脑干中许多"上运动神经元(Upper neurons)?±的支配和协调
* 基底神经节和小脑则向那些上运动神经元提供某种感觉、认知或感性的信息，使运动更加精确和协调
�
Part 1
Spinal Control of Movement
Introduction
* "running around like a chicken with its head cut off"
* The rhythmic movements could be elicited in the hind legs of cats and dogs long after their spinal cords had been severed from the rest of the central nervous system
-Charles Sherington & Graham Brown (English)
- The importance of circuitry within the spinal cord for the coordinated control of movements
Spinal circuitry control of movement
Spinal motor neurons
* Alpha motor neurons
Innervate skeletal muscle (extrafusal muscle) ......
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