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  Correlated activity of cortical neurons survives extensive removal of feedforward sensory input

Shapcott, K. A., Schmiedt, J. T., Saunders, R. C., Maier, A., Leopold, D. A., & Schmid, M. C. (2016). Correlated activity of cortical neurons survives extensive removal of feedforward sensory input. Scientific Reports, 6: 34886, pp. 34886. doi:10.1038/srep34886.

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-002B-9787-C Versions-Permalink: https://hdl.handle.net/21.11116/0000-000C-174D-5
Genre: Zeitschriftenartikel

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Shapcott_2016_CorrelatedActivity.pdf (Verlagsversion), 6MB
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Datei-Permalink:
https://hdl.handle.net/21.11116/0000-000C-174E-4
Name:
Shapcott_2016_CorrelatedActivity.pdf
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OA-Status:
Gold
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application/pdf / [MD5]
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Copyright Datum:
2016
Copyright Info:
Copyright © The Author(s) 2016
Lizenz:
http://creativecommons.org/licenses/by/3.0/

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externe Referenz:
https://www.nature.com/articles/srep34886 (Verlagsversion)
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OA-Status:
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 Urheber:
Shapcott, Katharine A.1, Autor
Schmiedt, Joscha T.1, Autor
Saunders, Richard C., Autor
Maier, Alexander, Autor
Leopold, David A., Autor
Schmid, Michael C.1, Autor
Affiliations:
1Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Max Planck Society, Deutschordenstr. 46, 60528 Frankfurt, DE, ou_2074314              

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Schlagwörter: Animals Female Macaca mulatta Neurons/*physiology Neurophysiological Monitoring/methods Photic Stimulation Visual Cortex/*cytology/*physiology
 Zusammenfassung: A fundamental property of brain function is that the spiking activity of cortical neurons is variable and that some of this variability is correlated between neurons. Correlated activity not due to the stimulus arises from shared input but the neuronal circuit mechanisms that result in these noise correlations are not fully understood. Here we tested in the visual system if correlated variability in mid-level area V4 of visual cortex is altered following extensive lesions of primary visual cortex (V1). To this end we recorded longitudinally the neuronal correlations in area V4 of two behaving macaque monkeys before and after a V1 lesion while the monkeys fixated a grey screen. We found that the correlations of neuronal activity survived the lesions in both monkeys. In one monkey, the correlation of multi-unit spiking signals was strongly increased in the first week post-lesion, while in the second monkey, correlated activity was slightly increased, but not greater than some week-by-week fluctuations observed. The typical drop-off of inter-neuronal correlations with cortical distance was preserved after the lesion. Therefore, as V4 noise correlations remain without feedforward input from V1, these results suggest instead that local and/or feedback input seem to be necessary for correlated activity.

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Sprache(n):
 Datum: 2016-10-10
 Publikationsstatus: Online veröffentlicht
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1038/srep34886
 Art des Abschluß: -

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Titel: Scientific Reports
  Kurztitel : Sci. Rep.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: London, UK : Nature Publishing Group
Seiten: - Band / Heft: 6 Artikelnummer: 34886 Start- / Endseite: 34886 Identifikator: ISSN: 2045-2322
CoNE: https://pure.mpg.de/cone/journals/resource/2045-2322