Limits...
Comparison and regulation of neuronal synchronization for various STDP rules.

Ruan Y, Zhao G - Neural Plast. (2009)

Bottom Line: We discuss effects of various experimentally supported STDP learning rules on frequency synchronization of two unidirectional coupled neurons systematically.First, we show that synchronization windows for all STDP rules cannot be enhanced compared to constant connection under the same model.Thus, we give some explanations by analyzing the synchronization mechanisms for various STDP rules finally.

View Article: PubMed Central - PubMed

Affiliation: Institute of Complex Bio-dynamics, Jiangxi Blue Sky University, Nanchang, Jiangxi 330098, China.

ABSTRACT
We discuss effects of various experimentally supported STDP learning rules on frequency synchronization of two unidirectional coupled neurons systematically. First, we show that synchronization windows for all STDP rules cannot be enhanced compared to constant connection under the same model. Then, we explore the influence of learning parameters on synchronization window and find optimal parameters that lead to the widest window. Our findings indicate that synchronization strongly depends on the specific shape and the parameters of the STDP update rules. Thus, we give some explanations by analyzing the synchronization mechanisms for various STDP rules finally.

Show MeSH
It shows that the regulation of Aplus to synchronization for the dc-STDP carrying out 40 times of stimulations. Asub = 6 nS, tplus = 100 milliseconds, tsub = 200 milliseconds, T2 = 233 milliseconds. Top: the value of ARP = 〈T2 − 〈T21〉〉/(T2 − T1) is 0 or 1 which, respectively, means post-synaptic neuron keeping initial period or achieving synchronization. Bottom: the number of synchronization times (ST) in 40 stimulations against Aplus.
© Copyright Policy - open-access
Related In: Results  -  Collection


getmorefigures.php?uid=PMC2712720&req=5

fig4: It shows that the regulation of Aplus to synchronization for the dc-STDP carrying out 40 times of stimulations. Asub = 6 nS, tplus = 100 milliseconds, tsub = 200 milliseconds, T2 = 233 milliseconds. Top: the value of ARP = 〈T2 − 〈T21〉〉/(T2 − T1) is 0 or 1 which, respectively, means post-synaptic neuron keeping initial period or achieving synchronization. Bottom: the number of synchronization times (ST) in 40 stimulations against Aplus.

Mentions: Figure 4(a) shows the value of ARP (average change of relative period ratio) = 〈T2 − 〈T21〉〉/(T2 − T1) for different Aplus. Some points have value 0 or 1, which means post-synaptic neuron keeping initial period or achieving synchronization with the pre-synaptic one, respectively. Some points have values other than 0 or 1. Figure 4(b) gives an explanation that these points correspond to probabilistic synchronizations with fixed T2 = 233.


Comparison and regulation of neuronal synchronization for various STDP rules.

Ruan Y, Zhao G - Neural Plast. (2009)

It shows that the regulation of Aplus to synchronization for the dc-STDP carrying out 40 times of stimulations. Asub = 6 nS, tplus = 100 milliseconds, tsub = 200 milliseconds, T2 = 233 milliseconds. Top: the value of ARP = 〈T2 − 〈T21〉〉/(T2 − T1) is 0 or 1 which, respectively, means post-synaptic neuron keeping initial period or achieving synchronization. Bottom: the number of synchronization times (ST) in 40 stimulations against Aplus.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC2712720&req=5

fig4: It shows that the regulation of Aplus to synchronization for the dc-STDP carrying out 40 times of stimulations. Asub = 6 nS, tplus = 100 milliseconds, tsub = 200 milliseconds, T2 = 233 milliseconds. Top: the value of ARP = 〈T2 − 〈T21〉〉/(T2 − T1) is 0 or 1 which, respectively, means post-synaptic neuron keeping initial period or achieving synchronization. Bottom: the number of synchronization times (ST) in 40 stimulations against Aplus.
Mentions: Figure 4(a) shows the value of ARP (average change of relative period ratio) = 〈T2 − 〈T21〉〉/(T2 − T1) for different Aplus. Some points have value 0 or 1, which means post-synaptic neuron keeping initial period or achieving synchronization with the pre-synaptic one, respectively. Some points have values other than 0 or 1. Figure 4(b) gives an explanation that these points correspond to probabilistic synchronizations with fixed T2 = 233.

Bottom Line: We discuss effects of various experimentally supported STDP learning rules on frequency synchronization of two unidirectional coupled neurons systematically.First, we show that synchronization windows for all STDP rules cannot be enhanced compared to constant connection under the same model.Thus, we give some explanations by analyzing the synchronization mechanisms for various STDP rules finally.

View Article: PubMed Central - PubMed

Affiliation: Institute of Complex Bio-dynamics, Jiangxi Blue Sky University, Nanchang, Jiangxi 330098, China.

ABSTRACT
We discuss effects of various experimentally supported STDP learning rules on frequency synchronization of two unidirectional coupled neurons systematically. First, we show that synchronization windows for all STDP rules cannot be enhanced compared to constant connection under the same model. Then, we explore the influence of learning parameters on synchronization window and find optimal parameters that lead to the widest window. Our findings indicate that synchronization strongly depends on the specific shape and the parameters of the STDP update rules. Thus, we give some explanations by analyzing the synchronization mechanisms for various STDP rules finally.

Show MeSH