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Related Concept Videos

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Information enters the brain through encoding, which is the input of information into the memory system. Once sensory information is received from the environment, the brain labels or codes it. The information is then organized with similar information and connected to existing concepts. Encoding occurs through automatic processing and effortful processing.
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Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
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Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
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A schema is a mental framework that helps individuals organize and interpret information. Schemata, formed from previous experiences, influence how we process new information: how we encode it, the inferences we make, and how we retrieve it. For instance, a schema for what a typical classroom looks like might include desks, a teacher's desk, a whiteboard, and students in such an environment. This expectation helps us quickly understand and navigate new classrooms without needing to analyze...
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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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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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Related Experiment Video

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Investigation of Synaptic Tagging/Capture and Cross-capture using Acute Hippocampal Slices from Rodents
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Neural processes during encoding support durable memory.

Qi Liu1, Qi Dong1, Chuansheng Chen2

  • 1National Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing 100875, PR China.

Neuroimage
|November 26, 2013
PubMed
Summary
This summary is machine-generated.

Durable memory formation is vital, but its neural basis is unclear. This study reveals that long-lasting memories involve strong activity in the left inferior frontal gyrus (LIFG) and posterior cingulate cortex (PCC).

Keywords:
Functional MRIInferior frontal gyrusMemory durationPosterior cingulate cortexSubsequent memory effect

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Area of Science:

  • Cognitive Neuroscience
  • Neuroimaging
  • Memory Research

Background:

  • Durable memory is crucial for survival and development.
  • Neural mechanisms underlying short- and long-duration memory remain poorly understood.
  • Previous studies have not clearly distinguished neural processes for different memory durations.

Purpose of the Study:

  • To dissociate neural processes supporting short- and long-duration memories.
  • To investigate the brain regions and functional connectivity associated with memory persistence.
  • To elucidate the neural basis of long-lasting memory formation.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was employed.
  • A modified subsequent memory paradigm with delayed testing (1 day and 1 week) was utilized.
  • Participants performed semantic judgments on words, with memory recall assessed at different time points.

Main Results:

  • Short-duration memories showed decreased activation in the posterior cingulate cortex (PCC) and precuneus compared to forgotten trials.
  • Long-duration memories exhibited stronger activation in the left inferior frontal gyrus (LIFG) and less deactivation in the PCC relative to short-duration memories.
  • Psychophysiological interaction (PPI) analysis indicated stronger functional connectivity between LIFG and PCC for long-duration memories.

Conclusions:

  • Long-lasting memory formation is supported by the combined activity of the LIFG and PCC.
  • Differential activation and connectivity patterns in the PCC and LIFG distinguish memory durability.
  • This research provides insights into the neural architecture supporting persistent memory.