モーター計画における効率的なコーディングを明らかにする
Tianhe Wang1,2, Yifan Fang1, David Whitney1,2,3
1Department of Psychology, University of California, Berkeley, Berkeley, CA, USA.
Science advances
|August 27, 2025
まとめ
神経系はバイエスの推論ではなく 効率的なコーディングを用いて 運動の精度を向上させ 環境統計に基づいてリソースを調整します この研究は 予測不能な状況に どのようにモーターコントロールが 適応するかを示しています
科学分野:
- 神経科学
- モーター コントロール
- 計算神経科学
背景:
- 神経系は 運動の精度を高めるために 先の情報を利用します
- 現在の運動制御モデルは,状態の推定にベイエスの推論を好むことが多い.
- 感知と比べると 効率的なコーディングの役割は過小評価されています
研究 の 目的:
- モーター制御におけるベイジアン推論と効率的なコーディングフレームワークを比較する.
- 神経系が予測不可能な環境で 短期的な前兆をどのように利用するかを研究する.
- 動作の精度を高めるための計算メカニズムを明らかにする.
主な方法:
- ベイジアンと効率的なコーディングモデルの比較.
- ランクインする動きの連続的な効果の分析
- タイムダイナミクスと内在のモーターの変動性の調査.
主要な成果:
- 効率的なコード化モデルに予想外な順番の動きがある.
- 現在の動きは 過去の動きと正反対のバイアスを示しています
- 移動の変動性は,同様の連続した到達度で減少し,効率的なコーディングをサポートしました.
結論:
- 結果は,運動計画のためのベイジアンモデルよりも効率的なコーディングフレームワークをサポートします.
- 効率的なコーディングは,モーター制御のための環境統計に基づいたリソースを動的に再配置します.
- 特に予測不可能な環境では,効率的なコーディングメカニズムによってモーター制御の計画が影響を受けます.
関連する概念動画
01:18Hierarchy of Motor Control
3.5K
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.
3.5K
01:11Direct Motor Pathways
2.4K
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...
2.4K
01:22Indirect Motor Pathways
1.7K
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...
1.7K
01:23Propagation of Action Potentials
6.8K
The propagation of an action potential refers to the process by which a nerve impulse, or "action potential," travels along a neuron.
Neurons (nerve cells) have a resting membrane potential, with a slightly negative charge inside compared to outside. This is maintained by ion channels, such as sodium (Na+) and potassium (K+) channels, which control the flow of ions. When a stimulus, like a touch or a signal from another neuron, triggers the neuron, sodium channels open, allowing sodium ions to...
Neurons (nerve cells) have a resting membrane potential, with a slightly negative charge inside compared to outside. This is maintained by ion channels, such as sodium (Na+) and potassium (K+) channels, which control the flow of ions. When a stimulus, like a touch or a signal from another neuron, triggers the neuron, sodium channels open, allowing sodium ions to...
6.8K
01:24Muscle Coordination and Action
2.0K
Muscle coordination is a complex and finely tuned process essential for smooth and purposeful movements like flexion, extension, adduction, abduction, and rotation. The human body orchestrates the actions of various muscles working in concert, each with a specific role. Four functional types describe how muscles work together: agonist, antagonist, synergist, and fixator.
Agonists
Agonist muscles, often called prime movers, are the primary muscles responsible for producing a specific movement....
Agonists
Agonist muscles, often called prime movers, are the primary muscles responsible for producing a specific movement....
2.0K
01:14Motor and Sensory Areas of the Cortex
4.6K
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 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....
4.6K