Universität zu Köln

Asl, Mojtaba Madadi ORCID: 0000-0002-2114-1588, Valizadeh, Alireza ORCID: 0000-0001-5101-8567 and Tass, Peter A. (2017). Dendritic and Axonal Propagation Delays Determine Emergent Structures of Neuronal Networks with Plastic Synapses. Sci Rep, 7. LONDON: NATURE PUBLISHING GROUP. ISSN 2045-2322

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Abstract

Spike-timing-dependent plasticity (STDP) modifies synaptic strengths based on the relative timing of pre- and postsynaptic spikes. The temporal order of spikes turned out to be crucial. We here take into account how propagation delays, composed of dendritic and axonal delay times, may affect the temporal order of spikes. In a minimal setting, characterized by neglecting dendritic and axonal propagation delays, STDP eliminates bidirectional connections between two coupled neurons and turns them into unidirectional connections. In this paper, however, we show that depending on the dendritic and axonal propagation delays, the temporal order of spikes at the synapses can be different from those in the cell bodies and, consequently, qualitatively different connectivity patterns emerge. In particular, we show that for a system of two coupled oscillatory neurons, bidirectional synapses can be preserved and potentiated. Intriguingly, this finding also translates to large networks of type-II phase oscillators and, hence, crucially impacts on the overall hierarchical connectivity patterns of oscillatory neuronal networks.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Asl, Mojtaba Madadi UNSPECIFIED orcid.org/0000-0002-2114-1588 UNSPECIFIED Valizadeh, Alireza UNSPECIFIED orcid.org/0000-0001-5101-8567 UNSPECIFIED Tass, Peter A. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-242828
DOI:	10.1038/srep39682
Journal or Publication Title:	Sci Rep
Volume:	7
Date:	2017
Publisher:	NATURE PUBLISHING GROUP
Place of Publication:	LONDON
ISSN:	2045-2322
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language TIMING-DEPENDENT PLASTICITY; SYNAPTIC PLASTICITY; COORDINATED RESET; BRAIN-STIMULATION; SPIKE; SYNCHRONIZATION; MODEL; ENHANCEMENT; TRANSITION; CURVES Multiple languages Multidisciplinary Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/24282