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- W2098792406 abstract "Stable perception arises from the interaction between sensory inputs and internal activity fluctuations in cortex. Here we analyzed how different types of activity contribute to cortical sensory processing at the cellular scale. We performed whole-cell recordings in the barrel cortex of anesthetized rats while applying ongoing whisker stimulation and measured the information conveyed about the time-varying stimulus by different types of input (membrane potential) and output (spiking) signals. We found that substantial, comparable amounts of incoming information are carried by two types of membrane potential signal: slow, large (up–down state) fluctuations, and faster (>20 Hz), smaller-amplitude synaptic activity. Both types of activity fluctuation are therefore significantly driven by the stimulus on an ongoing basis. Each stream conveys essentially independent information. Output (spiking) information is contained in spike timing not just relative to the stimulus but also relative to membrane potential fluctuations. Information transfer is favored in up states relative to down states. Thus, slow, ongoing activity fluctuations and finer-scale synaptic activity generate multiple channels for incoming and outgoing information within barrel cortex neurons during ongoing stimulation." @default.
- W2098792406 created "2016-06-24" @default.
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- W2098792406 creator A5016470769 @default.
- W2098792406 creator A5039819263 @default.
- W2098792406 creator A5050323950 @default.
- W2098792406 date "2010-08-11" @default.
- W2098792406 modified "2023-10-16" @default.
- W2098792406 title "Sensory Input Drives Multiple Intracellular Information Streams in Somatosensory Cortex" @default.
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- W2098792406 doi "https://doi.org/10.1523/jneurosci.6174-09.2010" @default.
- W2098792406 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6634689" @default.
- W2098792406 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/20702716" @default.
- W2098792406 hasPublicationYear "2010" @default.
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