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  Speed Controls the Amplitude and Timing of the Hippocampal Gamma Rhythm

Chen, Z., Resnik, E., McFarland, J. M., Sakmann, B., & Mehta, M. R. (2011). Speed Controls the Amplitude and Timing of the Hippocampal Gamma Rhythm. PLoS One, 6(6), 1-9. doi:doi:10.1371/journal.pone.0021408.

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-0019-0032-7 Versions-Permalink: https://hdl.handle.net/11858/00-001M-0000-0019-0130-3
Genre: Zeitschriftenartikel
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 Urheber:
Chen, Zhiping, Autor
Resnik, Evgeny, Autor
McFarland, James M., Autor
Sakmann, Bert1, Autor
Mehta, Mayank R., Autor
Borst, Alexander2, Beitragender
Affiliations:
1Max Planck Florida Institute for Neuroscience, Max Planck Society, One Max Planck Way, Jupiter FL 33458, USA, ou_1950288              
2MPI of Neurobiology, Max Planck Society, Am Klopferspitz 18, 82152 Martinsried, DE, ou_1110547              

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 Zusammenfassung: Cortical and hippocampal gamma oscillations have been implicated in many behavioral tasks. The hippocampus is required for spatial navigation where animals run at varying speeds. Hence we tested the hypothesis that the gamma rhythm could encode the running speed of mice. We found that the amplitude of slow (20–45 Hz) and fast (45–120 Hz) gamma rhythms in the hippocampal local field potential (LFP) increased with running speed. The speed-dependence of gamma amplitude was restricted to a narrow range of theta phases where gamma amplitude was maximal, called the preferred theta phase of gamma. The preferred phase of slow gamma precessed to lower values with increasing running speed. While maximal fast and slow gamma occurred at coincident phases of theta at low speeds, they became progressively more theta-phase separated with increasing speed. These results demonstrate a novel influence of speed on the amplitude and timing of the hippocampal gamma rhythm which could contribute to learning of temporal sequences and navigation.

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 Datum: 2011-06-24
 Publikationsstatus: Online veröffentlicht
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: URI: http://dx.plos.org/10.1371/journal.pone.0021408
DOI: doi:10.1371/journal.pone.0021408
 Art des Abschluß: -

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Titel: PLoS One
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: San Francisco, CA : Public Library of Science
Seiten: 9 Band / Heft: 6 (6) Artikelnummer: - Start- / Endseite: 1 - 9 Identifikator: ISSN: 1932-6203
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000277850