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Related Concept Videos

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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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Experience-related enhancements in striatal temporal encoding.

Robert A Bruce1,2, Matthew A Weber2, Rachael A Volkman2

  • 1Interdisciplinary Graduate Program in Neuroscience, University of Iowa, Iowa City, IA, USA.

The European Journal of Neuroscience
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Summary
This summary is machine-generated.

Mice learned to control actions over time, showing increased neural activity and improved temporal decoding in the dorsal striatum. This striatal flexibility with experience may be relevant for neurological diseases.

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Area of Science:

  • Neuroscience
  • Behavioral Neuroscience

Background:

  • Precise temporal control of action is vital for behavior and impaired in diseases like Parkinson's.
  • The dorsal striatum is crucial for temporal control, but how its neurons adapt with experience is unclear.

Purpose of the Study:

  • To investigate how medium spiny neurons (MSNs) in the dorsal striatum change activity with experience during interval timing tasks.
  • To understand the neural mechanisms underlying adaptive temporal control in the striatum.

Main Methods:

  • Recorded from dorsal striatal MSNs using microelectrode arrays in mice performing a timed response task.
  • Utilized an interval timing task requiring mice to switch response ports based on elapsed time.

Main Results:

  • Task experience increased time-related ramping and response-related activity in MSNs.
  • Temporal decoding accuracy by MSN ensembles improved with experience, driven by ramping activity.
  • A subset of MSNs showed differential activity modulation on error trials.

Conclusions:

  • Dorsal striatal MSN ensembles exhibit experience-dependent plasticity in temporal processing.
  • Findings highlight striatal flexibility during interval timing and temporal habituation.
  • These insights may inform our understanding of striatal dysfunction in human neurological disorders.