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Waking State: Rapid Variations Modulate Neural and Behavioral Responses
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Sep 23 2015
Source: Neuron. 87(6):1143-1161. -
Alternative Title:Neuron
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Description:The state of the brain and body constantly varies on rapid and slow timescales. These variations contribute to the apparent noisiness of sensory responses at both the neural and the behavioral level. Recent investigations of rapid state changes in awake, behaving animals have provided insight into the mechanisms by which optimal sensory encoding and behavioral performance are achieved. Fluctuations in state, as indexed by pupillometry, impact both the "signal" (sensory evoked response) and the "noise" (spontaneous activity) of cortical responses. By taking these fluctuations into account, neural response (co)variability is significantly reduced, revealing the brain to be more reliable and predictable than previously thought.
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Pubmed ID:26402600
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Pubmed Central ID:PMC4718218
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