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Related Concept Videos

Long-Term Memory01:18

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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.
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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.
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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...
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Related Experiment Video

Updated: Jan 10, 2026

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Thalamocortical transcriptional gates coordinate memory stabilization.

Andrea Terceros1, Celine Chen1, Yujin Harada1

  • 1Laboratory of Neural Dynamics and Cognition, The Rockefeller University, New York, NY, USA.

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Scientists uncovered a molecular cascade involving CAMTA1, TCF4, and ASH1L that stabilizes memories over time. This pathway is crucial for long-term memory persistence in the brain.

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Genetics

Background:

  • Long-term memory persistence mechanisms remain poorly understood.
  • Identifying the molecular basis of memory consolidation and forgetting is crucial for understanding cognitive function.

Purpose of the Study:

  • To investigate the molecular programs underlying memory persistence over weeks.
  • To identify key molecular regulators involved in stabilizing memories.
  • To elucidate the temporal dynamics of gene expression in memory maintenance.

Main Methods:

  • Developed a behavioral task in mice to differentiate between consolidated and forgotten memories.
  • Monitored circuit-specific molecular programs and transcriptional waves in the thalamocortical circuit.
  • Utilized CRISPR-knockout studies to assess the causal role of specific transcriptional regulators.

Main Results:

  • Identified distinct waves of transcription (cellular macrostates) correlating with memory persistence.
  • Discovered that CAMTA1, TCF4, and ASH1L orchestrate memory stabilization programs.
  • Demonstrated time-dependent roles: CAMTA1 for initial maintenance (days), TCF4 and ASH1L for later stabilization (weeks).

Conclusions:

  • A CAMTA1-TCF4-ASH1L thalamocortical transcriptional cascade is essential for memory stabilization.
  • Proposes a model where sequential transcriptional programs enable progressively longer memory maintenance.
  • Highlights the critical role of specific transcription factors in long-term memory persistence.