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  Gamma-band synchronization in the macaque hippocampus and memory formation

Jutras, M. J., Fries, P., & Buffalo, E. A. (2009). Gamma-band synchronization in the macaque hippocampus and memory formation. The Journal of Neuroscience, 29(40), 12521-12531. doi:10.1523/JNEUROSCI.0640-09.2009.

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Jutras_2009_Gamma-BandSynchronizationInTheMacaqueHippocampus.pdf (Publisher version), 2MB
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Jutras_2009_Gamma-BandSynchronizationInTheMacaqueHippocampus.pdf
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2009
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Copyright © 2009 Society for Neuroscience
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https://www.jneurosci.org/content/29/40/12521 (Publisher version)
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 Creators:
Jutras, Michael J., Author
Fries, Pascal1, 2, Author                 
Buffalo, Elizabeth A., Author
Affiliations:
1Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Max Planck Society, ou_2074314              
2Fries Lab, Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Max Planck Society, Deutschordenstraße 46, 60528 Frankfurt, DE, ou_3381216              

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Free keywords: inferior temporal cortex nonmatching-to-sample impaired recognition memory selective visual-attention neuronal synchronization behaving rat area v4 oscillations monkeys potentials
 Abstract: Increasing evidence suggests that neuronal synchronization in the gamma band (30–100 Hz) may play an important role in mediating cognitive processes. Gamma-band synchronization provides for the optimal temporal relationship between two signals to produce the long-term synaptic changes that have been theorized to underlie memory formation. Although neuronal populations in the hippocampus oscillate in the gamma range, the role of these oscillations in memory formation is still unclear. To address this issue, we recorded neuronal activity in the hippocampus while macaque monkeys performed a visual recognition memory task. During the encoding phase of this task, hippocampal neurons displayed gamma-band synchronization. Additionally, enhanced gamma-band synchronization during encoding predicted greater subsequent recognition memory performance. These changes in synchronization reflect enhanced coordination among hippocampal neurons and may facilitate synaptic changes necessary for successful memory encoding.

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 Dates: 2009-09-022009-10-072009
 Publication Status: Issued
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1523/JNEUROSCI.0640-09.2009
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Title: The Journal of Neuroscience
  Other : The Journal of Neuroscience: the Official Journal of the Society for Neuroscience
  Abbreviation : J. Neurosci.
Source Genre: Journal
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Publ. Info: Washington, DC : Society of Neuroscience
Pages: - Volume / Issue: 29 (40) Sequence Number: - Start / End Page: 12521 - 12531 Identifier: ISSN: 1529-2401