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Related Experiment Videos

Correlated neuronal variability in monkey visual cortex revealed by a multi-microelectrode.

M Bach, J Krüger

    Experimental Brain Research
    |January 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

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    Neuronal variability in the visual cortex is correlated within groups of neurons, suggesting external inputs rather than internal noise drive these changes. This finding impacts our understanding of neural processing and information flow.

    Area of Science:

    • Neuroscience
    • Computational Neuroscience
    • Visual Neuroscience

    Background:

    • Neuronal variability is a key characteristic of brain function.
    • Understanding the sources of this variability is crucial for interpreting neural activity.

    Purpose of the Study:

    • To investigate the sources of neuronal variability in the primate visual cortex.
    • To determine if neuronal variability arises from intrinsic noise or external influences.

    Main Methods:

    • Multi-microelectrode recordings were performed in the visual cortex of anaesthetized monkeys.
    • Neuronal responses were monitored over time to assess variability.

    Main Results:

    • Neuronal variability was found to be highly correlated within specific groups of neurons.

    Related Experiment Videos

  • Independent groups of neurons exhibited distinct patterns of variability.
  • This within-group covariance suggests a common underlying cause for variability.

    • Conclusions:

    • A significant portion of neuronal variability is attributed to unobserved external inputs, not intrinsic cellular noise.
    • These findings suggest coordinated modulation of neuronal activity by factors outside experimental control.