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Related Concept Videos

Role of Hippocampus in Memory01:19

Role of Hippocampus in Memory

483
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...
483
Role of Amygdala in Memory01:16

Role of Amygdala in Memory

357
The amygdala is a small, almond-shaped structure responsible for processing and storing memories, particularly those linked to emotions like fear and stress. It plays an essential role in the brain's response to emotionally significant events and often enhances memory formation by triggering stress hormone release. The amygdala is vital for encoding and retrieving memories associated with fear or stress, a process that is adaptive by helping organisms avoid dangerous situations.
One of the...
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Higher Mental Functions of Brain: Learning and Memory01:26

Higher Mental Functions of Brain: Learning and Memory

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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...
941
Role of Cerebellum and Prefrontal Cortex in Memory01:14

Role of Cerebellum and Prefrontal Cortex in Memory

559
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...
559
Long-Term Memory01:18

Long-Term Memory

242
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...
242
Role of Neurotransmitters in Memory01:23

Role of Neurotransmitters in Memory

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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...
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Related Experiment Video

Updated: Aug 27, 2025

Investigating Long-term Synaptic Plasticity in Interlamellar Hippocampus CA1 by Electrophysiological Field Recording
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The hippocampus and long-term memory.

Scott D Slotnick1

  • 1Department of Psychology and Neuroscience, Boston College, Chestnut Hill, MA, USA.

Cognitive Neuroscience
|September 27, 2022
PubMed
Summary
This summary is machine-generated.

This special issue explores the hippocampus's role in long-term memory. Research shows hippocampal connectivity changes with memory age and it responds to contextual information, but its link to working memory remains unproven.

Keywords:
ConsolidationfMRImedial temporal lobereviewworking memory

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Related Experiment Videos

Last Updated: Aug 27, 2025

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Area of Science:

  • Cognitive Neuroscience
  • Neurobiology of Memory
  • Systems Neuroscience

Background:

  • The hippocampus is crucial for long-term memory formation and retrieval.
  • This special issue investigates the hippocampus's evolving functions in memory.
  • Current research examines hippocampal connectivity and its relation to memory processes.

Discussion:

  • Functional connectivity between the hippocampus and cortical regions decreases with memory age, supporting systems consolidation theory.
  • The hippocampus is sensitive to the amount of contextual information retrieved during memory recall.
  • fMRI studies have not yet provided evidence linking the hippocampus to working memory.

Key Insights:

  • Hippocampal functional connectivity with the parahippocampal cortex and fusiform gyrus diminishes as memories age.
  • Hippocampal activation during memory retrieval correlates with the quantity of contextual information accessed.
  • Evidence for the hippocampus's involvement in working memory is currently lacking.

Outlook:

  • The multifaceted roles of the hippocampus in various memory types are under active investigation.
  • Future research will continue to elucidate the precise mechanisms of hippocampal memory functions.
  • This special issue highlights key debates and future research directions in hippocampal memory research.