Enhancement of pacemaker induced stochastic resonance by an autapse in a scale-free neuronal network

An autapse is an unusual synapse that occurs between the axon and the soma of the same neuron. Mathematically, it can be described as a self-delayed feedback loop that is defined by a specific time-delay and the so-called autaptic coupling strength. Recently, the role and function of autapses within the nervous system has been studied extensively. Here, we extend the scope of theoretical research by investigating the effects of an autapse on the transmission of a weak localized pacemaker activity in a scale-free neuronal network. Our results reveal that by mediating the spiking activity of the pacemaker neuron, an autapse increases the propagation of its rhythm across the whole network, if only the autaptic time delay and the autaptic coupling strength are properly adjusted. We show that the autapse-induced enhancement of the transmission of pacemaker activity occurs only when the autaptic time delay is close to an integer multiple of the intrinsic oscillation time of the neurons that form the network. In particular, we demonstrate the emergence of multiple resonances involving the weak signal, the intrinsic oscillations, and the time scale that is dictated by the autapse. Interestingly, we also show that the enhancement of the pacemaker rhythm across the network is the strongest if the degree of the pacemaker neuron is lowest. This is because the dissipation of the localized rhythm is contained to the few directly linked neurons, and only afterwards, through the secondary neurons, it propagates further. If the pacemaker neuron has a high degree, then its rhythm is simply too weak to excite all the neighboring neurons, and propagation therefore fails. © 2016, Science China Press and Springer-Verlag Berlin Heidelberg.

Eser Adı
[dc.title]
Enhancement of pacemaker induced stochastic resonance by an autapse in a scale-free neuronal network
Yazar
[dc.contributor.author]
Yılmaz, Ergin
Yazar
[dc.contributor.author]
Baysal, Veli
Yazar
[dc.contributor.author]
Perc, Matjaž
Yazar
[dc.contributor.author]
Özer, Mahmut
Yayın Yılı
[dc.date.issued]
2016
Yayıncı
[dc.publisher]
Springer Verlag
Yayın Türü
[dc.type]
article
Özet
[dc.description.abstract]
An autapse is an unusual synapse that occurs between the axon and the soma of the same neuron. Mathematically, it can be described as a self-delayed feedback loop that is defined by a specific time-delay and the so-called autaptic coupling strength. Recently, the role and function of autapses within the nervous system has been studied extensively. Here, we extend the scope of theoretical research by investigating the effects of an autapse on the transmission of a weak localized pacemaker activity in a scale-free neuronal network. Our results reveal that by mediating the spiking activity of the pacemaker neuron, an autapse increases the propagation of its rhythm across the whole network, if only the autaptic time delay and the autaptic coupling strength are properly adjusted. We show that the autapse-induced enhancement of the transmission of pacemaker activity occurs only when the autaptic time delay is close to an integer multiple of the intrinsic oscillation time of the neurons that form the network. In particular, we demonstrate the emergence of multiple resonances involving the weak signal, the intrinsic oscillations, and the time scale that is dictated by the autapse. Interestingly, we also show that the enhancement of the pacemaker rhythm across the network is the strongest if the degree of the pacemaker neuron is lowest. This is because the dissipation of the localized rhythm is contained to the few directly linked neurons, and only afterwards, through the secondary neurons, it propagates further. If the pacemaker neuron has a high degree, then its rhythm is simply too weak to excite all the neighboring neurons, and propagation therefore fails. © 2016, Science China Press and Springer-Verlag Berlin Heidelberg.
Kayıt Giriş Tarihi
[dc.date.accessioned]
2019-12-23
Açık Erişim Tarihi
[dc.date.available]
2019-12-23
Yayın Dili
[dc.language.iso]
eng
Konu Başlıkları
[dc.subject]
autapse
Konu Başlıkları
[dc.subject]
channel noise
Konu Başlıkları
[dc.subject]
neuron
Konu Başlıkları
[dc.subject]
scale-free network
Konu Başlıkları
[dc.subject]
self-delayed feedback
Künye
[dc.identifier.citation]
Yilmaz, E., Baysal, V., Perc, M. ve Ozer, M. (2016). Enhancement of pacemaker induced stochastic resonance by an autapse in a scale-free neuronal network. Science China Technological Sciences, 59(3), 364–370. doi:10.1007/s11431-015-5984-z
Haklar
[dc.rights]
info:eu-repo/semantics/closedAccess
ISSN
[dc.identifier.issn]
1674-7321
İlk Sayfa Sayısı
[dc.identifier.startpage]
364
Son Sayfa Sayısı
[dc.identifier.endpage]
370
Dergi Adı
[dc.relation.journal]
Science China Technological Sciences
Dergi Sayısı
[dc.identifier.issue]
3
Dergi Cilt Bilgisi
[dc.identifier.volume]
59
Tek Biçim Adres
[dc.identifier.uri]
https://dx.doi.org/10.1007/s11431-015-5984-z
Tek Biçim Adres
[dc.identifier.uri]
https://hdl.handle.net/20.500.12628/5634
Görüntülenme Sayısı ( Şehir )
Görüntülenme Sayısı ( Ülke )
Görüntülenme Sayısı ( Zaman Dağılımı )
Görüntülenme
50
09.12.2022 tarihinden bu yana
İndirme
1
09.12.2022 tarihinden bu yana
Son Erişim Tarihi
08 Şubat 2024 07:12
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Tıklayınız
pacemaker neuron rhythm autapse network autaptic neurons activity localized transmission degree propagation across intrinsic multiple enhancement occurs strength coupling further involving resonances emergence demonstrate particular therefore signal Science Springer-Verlag oscillation Berlin Heidelberg integer neighboring oscillations
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