Mean-field analysis of orientation selectivity in inhibition-dominated networks of spiking neurons

Abstract: Mechanisms underlying the emergence of orientation selectivity in the primary visual cortex are highly debated. Here we study the contribution of inhibition-dominated random recurrent networks to orientation selectivity, and more generally to sensory processing. By simulating and analyzing large-scale networks of spiking neurons, we investigate tuning amplification and contrast invariance of orientation selectivity in these networks. In particular, we show how selective attenuation of the common mode and amplification of the modulation component take place in these networks. Selective attenuation of the baseline, which is governed by the exceptional eigenvalue of the connectivity matrix, removes the unspecific, redundant signal component and ensures the invariance of selectivity across different contrasts. Selective amplification of modulation, which is governed by the operating regime of the network and depends on the strength of coupling, amplifies the informative signal component and thus increases the signal-to-noise ratio. Here, we perform a mean-field analysis which accounts for this process

Angaben zum Objekt

• Standort: Deutsche Nationalbibliothek Frankfurt am Main
• Umfang: Online-Ressource
• Sprache: Englisch
• Anmerkungen: SpringerPlus. 3 (2014), 148, DOI 10.1186/2193-1801-3-148, issn: 2193-1801 ; IN COPYRIGHT http://rightsstatements.org/page/InC/1.0 rs

Klassifikation und Themen

• Klassifikation: Biowissenschaften, Biologie

Beteiligte, Orts- und Zeitangaben

• Ereignis: Veröffentlichung
• (wo): Freiburg
• (wer): Universität
• (wann): 2014
• Urheber: Sadeh, Sadra ; Cardanobile, Stefano ; Rotter, Stefan
• Beteiligte Personen und Organisationen: Albert-Ludwigs-Universität Freiburg. Fakultät für Biologie ; Albert-Ludwigs-Universität Freiburg. Bernstein Center Freiburg

Weitere Informationen

• DOI: 10.1186/2193-1801-3-148
• URN: urn:nbn:de:bsz:25-freidok-125051
• Rechteinformation: Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Letzte Aktualisierung: 25.03.2025, 13:43 MEZ