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関連する概念動画

Higher Mental Functions of Brain: Learning and Memory01:26

Higher Mental Functions of Brain: Learning and Memory

2.3K
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...
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Amnesia01:13

Amnesia

865
Amnesia is a condition marked by long-term memory loss, which impairs the ability to recall past events or create new memories.
The severity and duration of memory loss vary depending on the type and underlying cause. Amnesia is classified into two main types: retrograde and anterograde.
Retrograde amnesia is marked by the loss of memories formed before the onset of the condition. Patients may recall distant past events but often forget those occurring shortly before the incident.
Anterograde...
865
Traumatic Memory01:20

Traumatic Memory

735
Emotionally traumatic events often lead to memories that are exceptionally vivid and enduring, sometimes persisting with remarkable clarity throughout an individual's life. A classic example of this phenomenon is a person who survives a car accident. Even years later, they may recall every detail of the event with startling accuracy — the screeching of the tires, the jarring impact, and the acrid smell of burning rubber. Such vividness contrasts sharply with how an individual...
735
Long-Term Memory01:18

Long-Term Memory

900
Long-term memory is a relatively permanent type of memory, capable of storing vast amounts of information over extended periods. Its storage capacity is generally considered unlimited.
Long-term memory can be categorized into two primary types: explicit and implicit memory. Explicit memory, also known as declarative memory, involves the conscious recollection of information that we deliberately try to remember, recall, and articulate. This type of memory encompasses specific facts, events, and...
900
Role of Neurotransmitters in Memory01:23

Role of Neurotransmitters in Memory

2.9K
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...
2.9K
Role of Hippocampus in Memory01:19

Role of Hippocampus in Memory

2.1K
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...
2.1K

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関連する実験動画

Updated: Apr 11, 2026

Author Spotlight: Investigating Neural Activity of Dentate Gyrus Granule Cells with Miniature Microscope
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Author Spotlight: Investigating Neural Activity of Dentate Gyrus Granule Cells with Miniature Microscope

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メモリ メモリ メモリ エングラム細胞は,逆行性アムネシアでは記憶を保持します.

Tomás J Ryan1, Dheeraj S Roy2, Michele Pignatelli2

  • 1RIKEN-MIT Center for Neural Circuit Genetics at the Picower Institute for Learning and Memory, Department of Biology and Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. Howard Hughes Medical Institute, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.

Science (New York, N.Y.)
|May 30, 2015
PubMed
まとめ
この要約は機械生成です。

記憶の統合は,特定の脳細胞内の接続を強化することによって記憶を安定させ,記憶エングラムとして知られています. タンパク質合成が阻害されている場合でも,これらのエングラム細胞を再活性化すると,記憶を回収でき,重要な役割が強調されます.

さらに関連する動画

Simultaneous Monitoring of Wireless Electrophysiology and Memory Behavioral Test as a Tool to Study Hippocampal Neurogenesis
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Simultaneous Monitoring of Wireless Electrophysiology and Memory Behavioral Test as a Tool to Study Hippocampal Neurogenesis

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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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関連する実験動画

Last Updated: Apr 11, 2026

Author Spotlight: Investigating Neural Activity of Dentate Gyrus Granule Cells with Miniature Microscope
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Author Spotlight: Investigating Neural Activity of Dentate Gyrus Granule Cells with Miniature Microscope

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Simultaneous Monitoring of Wireless Electrophysiology and Memory Behavioral Test as a Tool to Study Hippocampal Neurogenesis
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Simultaneous Monitoring of Wireless Electrophysiology and Memory Behavioral Test as a Tool to Study Hippocampal Neurogenesis

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Aversive Associative Learning and Memory Formation by Pairing Two Chemicals in Caenorhabditis elegans
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科学分野:

  • 神経科学は神経科学である.
  • 記憶の研究 記憶の研究
  • 細胞生物学 細胞生物学

背景:

  • 記憶の統合は,不安定な記憶を安定した長期記憶に変換します.
  • メモリ統合の正確なメカニズム,特にメモリエングラムの役割は,まだ完全に理解されていません.

研究 の 目的:

  • メモリ統合が,メモリエングラムの安定化にのみ依存しているかどうかを調査する.
  • 記憶の統合と回収に関連する細胞およびシナプス変化を探求する.

主な方法:

  • 学習依存性細胞ラベリングを使用して,メモリエングラム細胞を特定しました.
  • エングラム細胞におけるシナプス強度とデンドリティック脊椎の密度を評価した.
  • メモリ検索メカニズムを検知するために光遺伝的活性化を用いた.

主要な成果:

  • 統合された記憶エングラム細胞は,シナプス強度とデンドリティック脊椎密度の増加を示した.
  • タンパク質合成阻害剤の影響を受けたエングラム細胞は,これらの性質を欠いていた.
  • エングラム細胞の直接的な光遺伝的活性化は,保存された接続性と相関して,記憶の検索につながった.

結論:

  • エングラム細胞内の特定の接続パターンは,メモリ情報を保存するために不可欠です.
  • エングラム細胞の強化されたシナプスは,記憶回収プロセスにおいて重要な役割を果たします.