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  What's the Signal in the Noise?

Ecker, A. (2016). What's the Signal in the Noise?. Talk presented at AREADNE 2016: Research in Encoding And Decoding of Neural Ensembles. Santorini, Greece.

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Ecker, AS1, 2, 3, Author           
Affiliations:
1Research Group Computational Vision and Neuroscience, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497805              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              
3Department Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497798              

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 Abstract: Responses of cortical neurons are highly variable. Even repeated presentations of the same visual stimulus never elicit the same spike train. Identifying the origins of this variability remains a challenge. There is increasing evidence that it is not just noise arising from stochastic features of neuronal architecture, but at least partly represents meaningful top-down signals. One of the most prominent examples of such top-down modulation in the visual system is covert attention. I will present both theoretical and experimental results showing that trial-totrial fluctuations of attentional state contribute significantly to response variability in primary visual cortex of awake, behaving monkeys. I will argue that much can be learned about information processing in the brain by using latent variable models of neuronal activity to help us identify and account for cognitive variables and make sense of single-trial neural population data.

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 Dates: 2016-06
 Publication Status: Issued
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 Identifiers: BibTex Citekey: Ecker2016
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Title: AREADNE 2016: Research in Encoding And Decoding of Neural Ensembles
Place of Event: Santorini, Greece
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Invited: Yes

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Title: AREADNE 2016: Research in Encoding And Decoding of Neural Ensembles
Source Genre: Proceedings
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Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 28 - 28 Identifier: -