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  Theta coupling between V4 and prefrontal cortex predicts visual short-term memory performance

Liebe, S., Hoerzer, G., Logothetis, N., & Rainer, G. (2012). Theta coupling between V4 and prefrontal cortex predicts visual short-term memory performance. Nature Neuroscience, 15(3), 456-462. doi:10.1038/nn.3038.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-B806-B Version Permalink: http://hdl.handle.net/21.11116/0000-0001-8892-0
Genre: Journal Article

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https://www.nature.com/articles/nn.3038.pdf (Publisher version)
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 Creators:
Liebe, S1, 2, Author              
Hoerzer, GM, Author
Logothetis, NK1, 2, Author              
Rainer, G1, 2, Author              
Affiliations:
1Department Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497798              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              

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 Abstract: Short-term memory requires communication between multiple brain regions that collectively mediate the encoding and maintenance of sensory information. It has been suggested that oscillatory synchronization underlies intercortical communication. Yet, whether and how distant cortical areas cooperate during visual memory remains elusive. We examined neural interactions between visual area V4 and the lateral prefrontal cortex using simultaneous local field potential (LFP) recordings and single-unit activity (SUA) in monkeys performing a visual short-term memory task. During the memory period, we observed enhanced between-area phase synchronization in theta frequencies (3–9 Hz) of LFPs together with elevated phase locking of SUA to theta oscillations across regions. In addition, we found that the strength of intercortical locking was predictive of the animals' behavioral performance. This suggests that theta-band synchronization coordinates action potential communication between V4 and prefrontal cortex that may contribute to the maintenance of visual short-term memories.

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 Dates: 2012-03
 Publication Status: Published in print
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 Identifiers: DOI: 10.1038/nn.3038
BibTex Citekey: LiebeHLR2012
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Title: Nature Neuroscience
Source Genre: Journal
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Pages: - Volume / Issue: 15 (3) Sequence Number: - Start / End Page: 456 - 462 Identifier: -