関連する実験動画
Updated: Jul 7, 2026

09:49
Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior
Published on: April 16, 2014
眼運動指令の発達における知覚的決定の表現
1Department of Physiology and Biophysics, and Regional Primate Research Center, University of Washington, Seattle 98195-7290, USA.
Nature
|April 4, 2000
まとめ
脳は,感覚の証拠を比較して判断を下します. 前頭眼野 (FEF) の神経回路は,視覚的差別タスク中に,意思決定と運動準備を結びつける,この蓄積された証拠を示しています.
科学分野:
- 神経科学は神経科学である.
- コグニティブ・サイエンス コグニティブ・サイエンス
- システム神経科学 システム神経科学
背景:
- 行動に関する決定は,時間によって変化する感覚情報の断固たる判断に基づいています.
- 意思決定のためのエビデンス比較の基礎となる神経機構は,依然としてほとんど不明である.
研究 の 目的:
- 視覚的差別タスク中に蓄積された感覚的証拠を脳がどのように比較するか調査する.
- 運動準備に関与する神経回路が,継続的な証拠の蓄積を反映しているかどうかを判断する.
主な方法:
- 猿は,ダイナミックなランダムドット運動刺激を用いて,方向判断のタスクを実行した.
- 前頭眼野 (FEF) の電気微刺激を用いて,神経活動の探査を行いました.
- 顕微刺激の影響を評価するために,眼運動反応 (眼の動き) を分析した.
主要な成果:
- 誘発された目の動きは,猿の知覚判断の方向に偏った.
- 偏差の大きさは,運動の強さと視聴時間の長さと相関する.
- FEFのオキュロモーター信号は,選択を告げるために蓄積された運動の証拠を反映した.
結論:
- 意思決定形成と運動準備は,このタスクのためにFEFのニューラル組織レベルを共有しています.
- 行動反応を生成する神経回路は,感覚的証拠の蓄積を示します.
- これは,知覚的な意思決定と行動計画のニューラル基盤の洞察を提供します.
関連する概念動画
Vision
Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
Muscles of the Eye
The muscles of the eye are sophisticated structures that control eye movement and focus, allowing for the precise and rapid adjustments necessary for vision. The human eye is controlled by ten muscles — six extraocular muscles, three intraocular muscles, and one primary eyelid retractor muscle.
Extraocular Muscles
The six extraocular muscles surround the eyeball and control its movements. They are responsible for a wide range of eye motions, including looking up, down, left, right, and rotating...
Extraocular Muscles
The six extraocular muscles surround the eyeball and control its movements. They are responsible for a wide range of eye motions, including looking up, down, left, right, and rotating...
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.
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.
Accessory Structures of the Eye
Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...
Depth Perception and Spatial Vision
Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.

