Distribution of orientation selectivity in recurrent networks of spiking neurons with different random topologies
Abstract: Neurons in the primary visual cortex are more or less selective for the orientation of a light bar used for stimulation. A broad distribution of individual grades of orientation selectivity has in fact been reported in all species. A possible reason for emergence of broad distributions is the recurrent network within which the stimulus is being processed. Here we compute the distribution of orientation selectivity in randomly connected model networks that are equipped with different spatial patterns of connectivity. We show that, for a wide variety of connectivity patterns, a linear theory based on firing rates accurately approximates the outcome of direct numerical simulations of networks of spiking neurons. Distance dependent connectivity in networks with a more biologically realistic structure does not compromise our linear analysis, as long as the linearized dynamics, and hence the uniform asynchronous irregular activity state, remain stable. We conclude that linear mechanisms of stimulus processing are indeed responsible for the emergence of orientation selectivity and its distribution in recurrent networks with functionally heterogeneous synaptic connectivity
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Anmerkungen
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PLoS ONE. 9, 12 (2014), e114237, DOI 10.1371/journal.pone.0114237, issn: 1932-6203
IN COPYRIGHT http://rightsstatements.org/page/InC/1.0 rs
- Klassifikation
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Biowissenschaften, Biologie
- Schlagwort
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Nervenzelle
Neuronales Netz
Membranpotenzial
Synapse
- Ereignis
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Veröffentlichung
- (wo)
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Freiburg
- (wer)
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Universität
- (wann)
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2014
- Urheber
- Beteiligte Personen und Organisationen
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Albert-Ludwigs-Universität Freiburg
Bernstein Center Freiburg
- DOI
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10.1371/journal.pone.0114237
- URN
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urn:nbn:de:bsz:25-freidok-120354
- Rechteinformation
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Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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14.08.2025, 11:01 MESZ
Datenpartner
Deutsche Nationalbibliothek. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.
Beteiligte
- Sadeh, Sadra
- Rotter, Stefan
- Albert-Ludwigs-Universität Freiburg
- Bernstein Center Freiburg
- Universität
Entstanden
- 2014
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