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関連する概念動画

Olfaction01:25

Olfaction

46.2K
The sense of smell is achieved through the activities of the olfactory system. It starts when an airborne odorant enters the nasal cavity and reaches olfactory epithelium (OE). The OE is protected by a thin layer of mucus, which also serves the purpose of dissolving more complex compounds into simpler chemical odorants. The size of the OE and the density of sensory neurons varies among species; in humans, the OE is only about 9-10 cm2.
The olfactory receptors are embedded in the cilia of the...
46.2K
Role of Neurotransmitters in Memory01:23

Role of Neurotransmitters in Memory

1.5K
Neurotransmitters are integral to the brain's communication system, enabling neurons to transmit signals across synapses. This chemical exchange underpins various cognitive functions, including memory processes. The role of neurotransmitters in memory is multifaceted, influencing the encoding, consolidation, and retrieval of memories through their action on different neural circuits.
 Glutamate and Synaptic Plasticity
Glutamate, the brain's main excitatory neurotransmitter, is...
1.5K
Higher Mental Functions of Brain: Learning and Memory01:26

Higher Mental Functions of Brain: Learning and Memory

1.3K
Memory is one of the most vital higher mental functions of the brain. Memory is closely related to learning because it enables us to retain information and experiences from our past to use them in our present life. It also helps us to remember facts, events, and skills, such as riding a bike or swimming. There are two types of memory — declarative memory, which involves memorizing facts or events, and procedural memory, which enables us to remember how to do something like writing or...
1.3K
Role of Hippocampus in Memory01:19

Role of Hippocampus in Memory

654
The hippocampus, a critical brain structure, plays an essential role in memory processing, particularly in the formation and retrieval of memory. This small, seahorse-shaped region is located within the medial temporal lobe, with one hippocampus in each brain hemisphere. Experimental studies involving lesions in the hippocampi of rats have demonstrated significant impairments in tasks such as object recognition and maze navigation, indicating the hippocampus involvement in both recognition and...
654
Association Areas of the Cortex01:21

Association Areas of the Cortex

6.9K
Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
6.9K
Associative Learning01:27

Associative Learning

686
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...
686

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関連する実験動画

Updated: Oct 19, 2025

Aversive Associative Learning and Memory Formation by Pairing Two Chemicals in Caenorhabditis elegans
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Aversive Associative Learning and Memory Formation by Pairing Two Chemicals in Caenorhabditis elegans

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ドーパミンは,腸内皮質における関連記憶のエンコーディングを促進する.

Jason Y Lee1, Heechul Jun1, Shogo Soma1,2

  • 1Department of Anatomy and Neurobiology, School of Medicine, University of California, Irvine, Irvine, USA.

Nature
|September 23, 2021
PubMed
まとめ
この要約は機械生成です。

側腸内皮質 (LEC) のドーパミンの信号は,ファン細胞が新しいシグナル-報酬結合をコードするのを助け,学習を導く. このドーパミンの作用によるプロセスは 新しい記憶を 認知マップに組み込むのに不可欠です

さらに関連する動画

Combined In Vivo Anatomical and Functional Tracing of Ventral Tegmental Area Glutamate Terminals in the Hippocampus
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Combined In Vivo Anatomical and Functional Tracing of Ventral Tegmental Area Glutamate Terminals in the Hippocampus

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In Vivo Optical Calcium Imaging of Learning-Induced Synaptic Plasticity in Drosophila melanogaster
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In Vivo Optical Calcium Imaging of Learning-Induced Synaptic Plasticity in Drosophila melanogaster

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関連する実験動画

Last Updated: Oct 19, 2025

Aversive Associative Learning and Memory Formation by Pairing Two Chemicals in Caenorhabditis elegans
07:17

Aversive Associative Learning and Memory Formation by Pairing Two Chemicals in Caenorhabditis elegans

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Combined In Vivo Anatomical and Functional Tracing of Ventral Tegmental Area Glutamate Terminals in the Hippocampus
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Combined In Vivo Anatomical and Functional Tracing of Ventral Tegmental Area Glutamate Terminals in the Hippocampus

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In Vivo Optical Calcium Imaging of Learning-Induced Synaptic Plasticity in Drosophila melanogaster
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In Vivo Optical Calcium Imaging of Learning-Induced Synaptic Plasticity in Drosophila melanogaster

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科学分野:

  • 神経科学
  • 認知科学
  • 学習 と 記憶

背景:

  • ドーパミンは 補強学習の鍵です
  • ドーパミンの報酬シグナルが腸内海馬回路に与える影響は十分に理解されていません.
  • この回路は 学習と記憶に不可欠です

研究 の 目的:

  • ドーパミンが 腸内海馬回路に どう影響するか調べるためだ
  • ドーパミンが側頭葉皮質 (LEC) でシュー-報酬関連をコードする役割を決定する.

主な方法:

  • マウスの細胞型特有の電気生理学的記録
  • LECファンの細胞の光遺伝的抑制
  • ドーパミン信号を測定する 繊維光度測定法

主要な成果:

  • ドーパミン信号は,LEC層2aのファンの細胞のキュー報酬規則のエンコーディングを制御する.
  • LECファンの細胞は,新たに学習した報酬のシグナルを,以前に学習した報酬のシグナルとグループ化します.
  • 扇風機細胞の抑制は 新しい学習を阻害しますが 記憶の回復は阻害しません
  • ドーパミンはLECにおける新奇性の誘発された報酬期待をシグナルする.
  • LECドーパミンの抑制は 結合的エンコーディングと学習を妨げました

結論:

  • LECのファンの細胞は抽象的なタスクルールの認知マップを形成します.
  • LECドーパミンは この認知マップに 新しい記憶の統合を促します