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  Stimulus repetition modulates gamma-band synchronization in primate visual cortex

Brunet, N. M., Bosman, C. A., Vinck, M., Roberts, M., Oostenveld, R., Desimone, R., et al. (2014). Stimulus repetition modulates gamma-band synchronization in primate visual cortex. Proceedings of the National Academy of Sciences of the United States of America, 111(9), 3626-3631. doi:10.1073/pnas.1309714111.

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Brunet_2014_StimulusRepetition.pdf (Publisher version), 975KB
 
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 Creators:
Brunet, Nicolas M., Author
Bosman, Conrado A., Author
Vinck, Martin1, 2, Author                 
Roberts, Mark, Author
Oostenveld, Robert, Author
Desimone, Robert, Author
De Weerd, Peter, Author
Fries, Pascal1, 3, Author                 
Affiliations:
1Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Max Planck Society, ou_2074314              
2Vinck Lab, Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Max Planck Society, Deutschordenstraße 46, 60528 Frankfurt, DE, ou_3381242              
3Fries 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: Action Potentials/physiology Adaptation, Physiological/*physiology Animals Brain Waves/*physiology Electroencephalography Macaca mulatta Male Photic Stimulation Principal Component Analysis Visual Cortex/*physiology Visual Perception/*physiology
 Abstract: When a sensory stimulus repeats, neuronal firing rate and functional MRI blood oxygen level-dependent responses typically decline, yet perception and behavioral performance either stay constant or improve. An additional aspect of neuronal activity is neuronal synchronization, which can enhance the impact of neurons onto their postsynaptic targets independent of neuronal firing rates. We show that stimulus repetition leads to profound changes of neuronal gamma-band ( approximately 40-90 Hz) synchronization. Electrocorticographic recordings in two awake macaque monkeys demonstrated that repeated presentations of a visual grating stimulus resulted in a steady increase of visually induced gamma-band activity in area V1, gamma-band synchronization between areas V1 and V4, and gamma-band activity in area V4. Microelectrode recordings in area V4 of two additional monkeys under the same stimulation conditions allowed a direct comparison of firing rates and gamma-band synchronization strengths for multiunit activity (MUA), as well as for isolated single units, sorted into putative pyramidal cells and putative interneurons. MUA and putative interneurons showed repetition-related decreases in firing rate, yet increases in gamma-band synchronization. Putative pyramidal cells showed no repetition-related firing rate change, but a decrease in gamma-band synchronization for weakly stimulus-driven units and constant gamma-band synchronization for strongly driven units. We propose that the repetition-related changes in gamma-band synchronization maintain the interareal stimulus signaling and sharpen the stimulus representation by gamma-synchronized pyramidal cell spikes.

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 Dates: 2014-02-192014
 Publication Status: Issued
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 Rev. Type: Peer
 Identifiers: DOI: 10.1073/pnas.1309714111
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Title: Proceedings of the National Academy of Sciences of the United States of America
  Other : Proc. Natl. Acad. Sci. USA
Source Genre: Journal
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Publ. Info: National Academy of Sciences
Pages: - Volume / Issue: 111 (9) Sequence Number: - Start / End Page: 3626 - 3631 Identifier: ISSN: 0027-8424
CoNE: https://pure.mpg.de/cone/journals/resource/954925427230