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Related Experiment Videos

Discovering spike patterns in neuronal responses.

Jean-Marc Fellous1, Paul H E Tiesinga, Peter J Thomas

  • 1Computational Neurobiology Laboratory, Howard Hughes Medical Institute, The Salk Institute for Biological Studies, La Jolla, California 92037, USA. fellous@salk.edu

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
|March 27, 2004
PubMed
Summary
This summary is machine-generated.

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Even with identical stimuli, cortical neurons can generate multiple precise spike patterns. This suggests prestimulus neural history influences spike timing across various timescales.

Area of Science:

  • Neuroscience
  • Computational Neuroscience
  • Systems Neuroscience

Background:

  • Neuronal responses to repeated stimuli are often characterized by precise spike timing.
  • Existing models suggest a single, unique spike pattern emerges for a given stimulus.
  • The influence of prior neural activity on spike pattern reliability remains incompletely understood.

Purpose of the Study:

  • To investigate whether a single stimulus can elicit multiple reliable temporal spike patterns from a neuron.
  • To develop and validate a novel method for identifying coexisting spike patterns in neural data.
  • To explore the role of prestimulus neural history in shaping stimulus-evoked spike timing.

Main Methods:

  • Development of a new analytical method to detect temporal spike patterns in multitrial neural recordings.

Related Experiment Videos

  • Testing the method's efficacy using simulated (surrogate) data sets.
  • Application of the method to in vitro pyramidal cell recordings, in vivo monkey middle temporal area data, and cat lateral geniculate nucleus data.

    • Main Results:

    • Multiple, distinct, and coexisting spike patterns were reliably identified for the same stimulus.
    • These patterns were observed across different neuronal types and species (rat, monkey, cat).
    • The duration of identified spike patterns varied significantly, from milliseconds (in vitro) to seconds (in vivo).

    Conclusions:

    • A single frozen noise stimulus can indeed evoke multiple reliable temporal spike patterns.
    • The prestimulus history of a neuron plays a crucial role in determining the precise spike timing.
    • This influence of neural history operates across a broad spectrum of timescales, from milliseconds to seconds.