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関連する概念動画

Role of Cerebellum and Prefrontal Cortex in Memory01:14

Role of Cerebellum and Prefrontal Cortex in Memory

1.2K
The cerebellum, while traditionally associated with motor control, also plays a crucial role in memory, particularly in procedural memory, which involves learning motor tasks that become automatic through repetition. For example, studies have shown that when the cerebellum is damaged, individuals or animals lose the ability to learn conditioned motor responses, such as the conditioned eye-blink response in classical conditioning experiments with rabbits. This study demonstrates the...
1.2K
Velocity of an Object01:18

Velocity of an Object

208
Understanding how an object moves along a path requires distinguishing between motion over a time span and motion at a precise moment. A useful example is a vehicle traveling along a straight and level path, where its position at any given time is known. The initial step in analyzing this motion is to measure how far the vehicle travels over a fixed time period. This measurement, called average velocity, is computed by dividing the total change in position by the duration over which the change...
208
System of Memory01:23

System of Memory

7.5K
Memory is categorized into three major systems: sensory memory, short-term memory (STM), and long-term memory (LTM). These systems differ in their capacity and the duration for which they can hold information. Sensory memory captures raw sensory input from the environment, holding it for just a few seconds or less. For example, on hearing a brief, loud sound, like a car horn honking, the sound seems to linger in the mind for a moment even after it stops. This is an instance of sensory memory...
7.5K
Working Memory01:24

Working Memory

930
Working memory refers to a combination of components, including short-term memory and attention, that allow an individual to hold information temporarily as we perform cognitive tasks. It is an essential cognitive function that enables the execution of complex tasks such as problem-solving, comprehension, and reasoning. Unlike short-term memory, which simply involves the storage of information for a brief period, working memory involves the active manipulation and processing of this...
930
Potential Due to a Polarized Object01:29

Potential Due to a Polarized Object

808
A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...
808
Potential Due to a Magnetized Object01:24

Potential Due to a Magnetized Object

824
Magnetic dipoles in magnetic materials are aligned when placed under an external magnetic field. For paramagnets and ferromagnets, dipole alignment occurs in the direction of the magnetic field. However, the dipoles align opposite to the field in the case of diamagnets. This state of magnetic polarization due to the external field is called magnetization. Magnetization is defined as the dipole moment per unit volume. It plays a similar role to polarization in electrostatics.
The vector...
824

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関連する実験動画

Updated: Feb 14, 2026

Novel Object Recognition Test for the Investigation of Learning and Memory in Mice
08:52

Novel Object Recognition Test for the Investigation of Learning and Memory in Mice

Published on: August 30, 2017

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灵長類の前頭皮質における多物体シーンの作業記憶

Nicholas Watters, Jack Gabel, Joshua Tenenbaum

    bioRxiv : the preprint server for biology
    |February 13, 2026
    PubMed
    まとめ

    脳は,複数のオブジェクトをワーキングメモリに維持するために,離散的なスロットやスイッチングではなく,加重和アプローチを使用します. この発見は,前頭皮質が複雑な情報処理をどのように処理するかを明らかにしています.

    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
    • 計算神経科学とは

    背景:

    • 作業記憶は複雑な推論を可能にしますが,複数のオブジェクトを保存するための神経機構は議論されています.
    • 既存の理論には,離散スロット,ダイナミックスイッチング,表現の加重組合せが含まれています.

    研究 の 目的:

    • 複数のオブジェクトの作業記憶の競合するモデルをニューラルデータに対して定量的にテストする.
    • 前頭皮質が同時にオブジェクトを記憶するために使用する表現形式を決定する.

    主な方法:

    • 神経活動に関する定量的な予測に理論的仮説を公式化した.
    • マンクの背中中前頭皮質と前頭目の領域からの密集したニューラルデータを,複数のオブジェクトの作業記憶タスク中に記録した.
    • 神経記録と行動データに対するクロス検証されたモデルの性能.

    主要な成果:

    • オブジェクト応答の加重された組み合わせとして集団の活動を表現するゲインモデルは,スロットとスイッチングモデルを大幅に上回った.
    • 試験特有の得益推定値は,行動エラーと反応時間と相関しており,記憶の忠誠性を反映しています.
    • 結果は,独立したデータセットと異なる空間構成で堅牢でした.

    さらに関連する動画

    Continuous Theta Burst Stimulation of the Posterior Medial Frontal Cortex to Experimentally Reduce Ideological Threat Responses
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    Continuous Theta Burst Stimulation of the Posterior Medial Frontal Cortex to Experimentally Reduce Ideological Threat Responses

    Published on: September 28, 2018

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    Knowing What Counts: Unbiased Stereology in the Non-human Primate Brain
    11:25

    Knowing What Counts: Unbiased Stereology in the Non-human Primate Brain

    Published on: May 14, 2009

    14.3K

    関連する実験動画

    Last Updated: Feb 14, 2026

    Novel Object Recognition Test for the Investigation of Learning and Memory in Mice
    08:52

    Novel Object Recognition Test for the Investigation of Learning and Memory in Mice

    Published on: August 30, 2017

    77.7K
    Continuous Theta Burst Stimulation of the Posterior Medial Frontal Cortex to Experimentally Reduce Ideological Threat Responses
    06:42

    Continuous Theta Burst Stimulation of the Posterior Medial Frontal Cortex to Experimentally Reduce Ideological Threat Responses

    Published on: September 28, 2018

    12.3K
    Knowing What Counts: Unbiased Stereology in the Non-human Primate Brain
    11:25

    Knowing What Counts: Unbiased Stereology in the Non-human Primate Brain

    Published on: May 14, 2009

    14.3K

    結論:

    • 前頭皮質は,複数のオブジェクトの作業記憶のための加重和表現を採用している可能性が高い.
    • この研究は,作業記憶における神経表現を理解するための厳格な枠組みを提供します.
    • 記憶の複数のアイテムを管理する脳の能力を裏付ける特定の神経機構を特定しました.