Display Abstract

Title Desynchronization by weak stimulation

Name Oleksandr Popovych
Country Germany
Email o.popovych@fz-juelich.de
Co-Author(s) Markos Xenakis, Peter A. Tass
Submit Time 2014-03-14 07:18:58
Session
Special Session 25: Dynamics of chaotic and complex systems and applications
Contents
We develop and optimize neuromodulation techniques for counteracting of abnormal neuronal synchronization characteristic for several neurological disorders like Parkinson's disease or tinnitus. An efficient stimulation has to be of sufficient strength and duration, and too weak stimulation may fail to desynchronize the stimulated neurons. For this case we propose a novel stimulation approach which can sustainably shift the neuronal population to a desynchronized regime by even weak stimulation, where the conventional stimulation protocol does not work. We suggest to stimulate the neuronal target population in an intermittent stop-and-go manner, which explores multistable regimes induced in the neuronal network by spike timing-dependent plasticity. The suggested approach is illustrated on coordinated reset stimulation that has successfully been tested in several experimental and clinical studies. Our findings can provide an opportunity to reduce the stimulation intensity without affecting the efficacy of the stimulation method, which may be of clinical relevance.