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関連する概念動画

Subliminal Perception01:15

Subliminal Perception

770
Subliminal perception refers to the processing of sensory information that occurs below the level of conscious awareness. Researchers study subliminal perception by presenting a stimulus, such as a word or image, very quickly, typically around 50 milliseconds. This rapid presentation is often followed by another stimulus, such as a pattern of dots or lines, which blocks further mental processing of the initial stimulus. As a result, if participants cannot identify the initial stimulus better...
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Factors Affecting Perception01:25

Factors Affecting Perception

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Perception is influenced by perceptual set, context, motivation, and emotion. Perceptual set, or perceptual expectancy, refers to the tendency to perceive things in a particular way, influenced by previous experiences and expectations. This phenomenon affects the interpretation of stimuli, creating a set of mental tendencies and assumptions that impact sensory perceptions of sound, taste, touch, and sight.
An illustrative example of a perceptual set is the scenario where an airline pilot told...
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Perception01:28

Perception

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Perception is a fundamental psychological process that enables individuals to organize, interpret, and consciously experience sensory information. This process is crucial for understanding and interacting with the world around us. It includes both bottom-up and top-down processing, each playing a distinct role in how we perceive our environment.
Bottom-up processing begins at the sensory level, where receptors detect external environmental stimuli. These could include the tactile sensation of...
1.0K
Gestalt Principles of Perception01:21

Gestalt Principles of Perception

1.1K
Gestalt principles provide a framework for understanding how humans perceive objects as unified wholes within their context. These principles are essential in explaining the cognitive processes that make sense of complex visual stimuli by organizing them into coherent groups. One fundamental principle is proximity, which posits that objects located close to each other are perceived as a collective group. For instance, when dots are positioned near one another, the visual system interprets them...
1.1K
Critical Region, Critical Values and Significance Level01:16

Critical Region, Critical Values and Significance Level

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The critical region, critical value, and significance level are interdependent concepts crucial in hypothesis testing.
In hypothesis testing, a sample statistic is converted to a test statistic using z, t, or chi-square distribution. A critical region is an area under the curve in  probability distributions demarcated by the critical value. When the test statistic falls in this region, it suggests that the null hypothesis must be rejected. As this region contains all those values of the...
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Auditory Perception01:17

Auditory Perception

1.0K
The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the...
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In vivo Imaging of Deep Cortical Layers using a Microprism
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In vivo Imaging of Deep Cortical Layers using a Microprism

Published on: August 27, 2009

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認識を誘発する皮質層特有の重要なダイナミクス

James H Marshel1, Yoon Seok Kim2, Timothy A Machado1,2

  • 1CNC Department, Stanford University, Stanford, CA 94305, USA.

Science (New York, N.Y.)
|July 20, 2019
PubMed
まとめ
この要約は機械生成です。

研究者はオプトジェネティクスを使って マウス新皮質の個々のニューロンを正確に制御しました この刺激はニューロンネットワークを駆動し 視覚的差別行動に成功し 層特有の皮質の動態を明らかにしました

さらに関連する動画

Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example
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Concurrent EEG and Functional MRI Recording and Integration Analysis for Dynamic Cortical Activity Imaging
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関連する実験動画

Last Updated: Jan 22, 2026

In vivo Imaging of Deep Cortical Layers using a Microprism
09:45

In vivo Imaging of Deep Cortical Layers using a Microprism

Published on: August 27, 2009

11.9K
Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example
08:45

Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example

Published on: October 24, 2012

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Concurrent EEG and Functional MRI Recording and Integration Analysis for Dynamic Cortical Activity Imaging
11:28

Concurrent EEG and Functional MRI Recording and Integration Analysis for Dynamic Cortical Activity Imaging

Published on: June 30, 2018

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科学分野:

  • 神経科学
  • オプトジェネティクス
  • システム神経科学

背景:

  • 哺乳類の新皮質におけるニューロン活動パターンは,知覚体験の基礎にあると仮定されている.
  • 特定のニューロンの活動と行動の因果関係を理解することが重要です

研究 の 目的:

  • 視覚的差別における特定のニューロン集合の役割を調査する.
  • オプトジェネティックに誘発された ニューロンの活動と行動の因果関係を調べる
  • 認識のタスク中に新皮質内の層特有のダイナミクスを特徴づける.

主な方法:

  • ニューロンの制御のために新しい赤色シフトチャネルロドプシン (ChRmine) を利用した.
  • マルチフォトンホログラフィー (MultiSLM) を用いて,精密な大容量の神経刺激を行う.
  • 視覚的差別のタスク中にマウス新皮質のニューロンの活動を記録し,分析した.

主要な成果:

  • 刺激指向型選択ニューロンは,機能的に関連したニューロンの集団を勧誘する.
  • これらの集合体の光遺伝的活性化により 正確な行動差別が成功しました
  • レイヤ2/3からレイヤ5への神経活動の非対称な伝播が観察され,レイヤ5の組み合わせが非常に有効である.
  • 集団の動態を予測し 自然の視覚表現を反映した

結論:

  • ニューロンの集合体の精密な光遺伝的制御は 特定の知覚行動を直接誘発することができます
  • 神経皮質の処理は,視覚的差別の際に異なる層特有のダイナミクスを示します.
  • ターゲットを絞った刺激によって ニューロンのネットワークを活性化させるのに 必要な機能は 欠かせない.