Spiking patterns of a hippocampus model in electric fields

doi:10.1088/1674-1056/20/12/128704

Abstract We develop a model of CA3 neurons embedded in a resistive array to mimic the effects of electric fields from a new perspective. Effects of DC and sinusoidal electric fields on firing patterns in CA3 neurons are investigated in this study. The firing patterns can be switched from no firing pattern to burst or from burst to fast periodic firing pattern with the increase of DC electric field intensity. It is also found that the firing activities are sensitive to the frequency and amplitude of the sinusoidal electric field. Different phase-locking states and chaotic firing regions are observed in the parameter space of frequency and amplitude. These findings are qualitatively in accordance with the results of relevant experimental and numerical studies. It is implied that the external or endogenous electric field can modulate the neural code in the brain. Furthermore, it is helpful to develop control strategies based on electric fields to control neural diseases such as epilepsy.

Keywords: electric field Pinsky-Rinzel neuron phase locking firing pattern

Received: 08 June 2011
Revised: 06 July 2011
Accepted manuscript online:

PACS:	87.19.L-	(Neuroscience)
	05.45.-a	(Nonlinear dynamics and chaos)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61072012, 60901035, and 50907044).

Cite this article:

Men Cong(门聪), Wang Jiang(王江) , Qin Ying-Mei(秦迎梅), Wei Xi-Le(魏熙乐), Che Yan-Qiu(车艳秋), and Deng Bin(邓斌) Spiking patterns of a hippocampus model in electric fields 2011 Chin. Phys. B 20 128704

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