The Nature of Shared Cortical Variability

  title={The Nature of Shared Cortical Variability},
  author={I-Chun Lin and Michael Okun and Matteo Carandini and Kenneth D Harris},
Neuronal responses of sensory cortex are highly variable, and this variability is correlated across neurons. To assess how variability reflects factors shared across a neuronal population, we analyzed the activity of many simultaneously recorded neurons in visual cortex. We developed a simple model that comprises two sources of shared variability: a multiplicative gain, which uniformly scales each neuron's sensory drive, and an additive offset, which affects different neurons to different… CONTINUE READING
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