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関連する概念動画

Observational Learning01:12

Observational Learning

782
Albert Bandura's observational learning, also known as imitation or modeling, occurs when a person observes and imitates another's behavior. It is a quicker process than operant conditioning. A well-known example is the Bobo doll study, where children who saw an adult acting aggressively towards the doll were more likely to act aggressively when left alone, compared to those who observed a nonaggressive adult. Many psychologists view observational learning as a form of latent learning...
782
Visual System01:26

Visual System

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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...
1.6K
Vision01:24

Vision

59.2K
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.
59.2K
Associative Learning01:27

Associative Learning

1.2K
Associative learning is a fundamental concept in behavioral psychology, wherein a connection is established between two stimuli or events, leading to a learned response. This process is critical in understanding how behaviors are acquired and modified. Conditioning, the mechanism through which associations are formed, can be divided into two main types: classical conditioning and operant conditioning, each elucidating different aspects of associative learning.
Classical conditioning, also known...
1.2K
Sequence Networks of Rotating Machines01:24

Sequence Networks of Rotating Machines

466
A Y-connected synchronous generator, grounded through a neutral impedance, is designed to produce balanced internal phase voltages with only positive-sequence components. The generator's sequence networks include a source voltage that is exclusively in the positive-sequence network. The sequence components of line-to-ground voltages at the generator terminals illustrate this configuration.
Zero-sequence current induces a voltage drop across the generator's neutral impedance and other...
466
Long-term Potentiation01:35

Long-term Potentiation

58.1K
Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
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関連する実験動画

Updated: Jan 7, 2026

The "Motor" in Implicit Motor Sequence Learning: A Foot-stepping Serial Reaction Time Task
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The "Motor" in Implicit Motor Sequence Learning: A Foot-stepping Serial Reaction Time Task

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視覚イメージ系列の反復学習の根底にある神経力学

Chong Zhao1, Audrey Kim1, Leyla Campos1

  • 1University of Chicago.

Journal of cognitive neuroscience
|December 30, 2025
PubMed
まとめ

反復学習は、記憶検索の神経署名である事後的旧/新効果を高めるが、前頭部旧/新効果は高めない。これは、事後的効果が長期記憶の変化を特異的に追跡することを示唆している。

科学分野:

  • 認知神経科学;記憶の神経科学

背景:

  • 人間の視覚物体認識は、記憶検索メカニズムに依存しています。事後的および前頭部の旧/新効果は、認識記憶においてイベント関連電位(ERP)によって明らかにされます。これらのERP成分の記憶プロセスにおける異なる役割は、依然として議論されています。

研究 の 目的:

  • 反復学習が事後的および前頭部の旧/新効果にどのように影響するかを調査すること。これらのERP成分が学習に関連する異なる記憶プロセスを反映しているかどうかを判断すること。

主な方法:

  • 参加者は、EEGを記録しながら、複数のセッションで画像を繰り返し学習しました。比較のためにワーキングメモリ条件(セットサイズ1)が含まれました。分析は、事後的および前頭部の旧/新効果の振幅とピーク潜時に焦点を当てました。

主要な成果:

  • 事後的旧/新効果は、反復により振幅が増加し潜時が短縮し、効率的な長期記憶検索を示唆しました。前頭部旧/新効果は、反復によって変化しませんでした。ワーキングメモリへのアクセス(セットサイズ1)は、十分に練習された長期記憶よりもさらに速く、より早期のERPピークによって示されました。

結論:

  • 事後的旧/新効果は、学習によって誘発される長期記憶の変化の敏感なマーカーです。前頭部旧/新効果は、反復学習に対して感度が低いです。ワーキングメモリへのアクセスは、高度に練習された刺激であっても、長期記憶検索よりも大幅に高速です。
キーワード:
反復学習記憶検索事後的旧/新効果前頭部旧/新効果イベント関連電位

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