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関連する概念動画

Vision01:24

Vision

55.3K
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.
55.3K
Parallel Processing01:20

Parallel Processing

224
The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...
224
Neural Circuits01:25

Neural Circuits

1.5K
Neural circuits and neuronal pools are two of the main structures found in the nervous system. Neural circuits are networks of neurons that work together to carry out a specific task or process. They consist of interconnected neurons and glial cells, which provide structural and metabolic support.
Neuronal pools are collections of nerve cells with similar functions and interact through chemical and electrical signals. These pools include both interneurons (the central neural circuit nodes that...
1.5K
Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

897
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.
897
Visual System01:26

Visual System

684
Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
Once through the pupil, the light passes through the lens, a...
684

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関連する実験動画

Updated: Sep 9, 2025

Automated Visual Cognitive Tasks for Recording Neural Activity Using a Floor Projection Maze
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Automated Visual Cognitive Tasks for Recording Neural Activity Using a Floor Projection Maze

Published on: February 20, 2014

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どこに行けばいいの? コンボリューションニューラルネットワークを用いたシーンの処理と視覚空間記憶の相互作用のタイムラルニューラルダイナミクスの解読

Clément Naveilhan1,2, Raphaël Zory1,3,4, Stephen Ramanoël1,5,6

  • 1Université Côte d'Azur, LAMHESS, Nice, France.

Journal of vision
|August 28, 2025
PubMed
まとめ

新しく学習された空間情報は 視覚的特徴と文脈的知識を統合して 目標指向の行動に早期の脳反応を迅速に 影響する. これは航海費の処理方法に影響します

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Perspectives on Neuroscience
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関連する実験動画

Last Updated: Sep 9, 2025

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Automated Visual Cognitive Tasks for Recording Neural Activity Using a Floor Projection Maze

Published on: February 20, 2014

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Published on: July 31, 2007

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Cross-Modal Multivariate Pattern Analysis
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科学分野:

  • 神経科学
  • 認知心理学
  • 計算神経科学

背景:

  • 視覚的なシーンの知覚は,特徴と文脈を統合することによって,環境を迅速に解釈します.
  • この統合は 目標に導かれた行動や 複雑な空間でのナビゲーションに 極めて重要です

研究 の 目的:

  • シーンの知覚におけるボトムアップとトップダウン処理のタイムラルニューラルダイナミクスを調査する.
  • 空間的な知識が,すぐにナビゲーションの能力のための初期の神経反応を調節するかどうかを判断する.

主な方法:

  • 30人の参加者の脳波データを分析した.
  • グラデント加重クラスアクティベーションマッピング (Grad-CAM) を用いたコンボリューションニューラルネットワーク (CNN)
  • 操作されたナビゲーションアフォーダンスを含むシーンの記憶と視覚空間記憶のタスク.

主要な成果:

  • 視覚的特徴と空間的記憶の 初期統合ウィンドウ (50〜250ミリ秒) を特定した.
  • 空間学習の後に一般化できませんでした.
  • 初期のシーンの知覚に空間的な知識の直接的な上から下への影響が示されています.

結論:

  • シーナと視覚空間記憶情報は初期統合の窓を共有しています.
  • 新しく獲得した空間的知識は,シーン知覚の初期の神経処理に直接上から下へと影響を及ぼします.
  • これは 行動の誘導における 記憶と知覚のダイナミックな相互作用を 強調しています