Title :
Analysis of the Mechanism of Action of Deep Brain Stimulation Using the Concepts of Dither Injection and the Equivalent Nonlinearity
Author :
De Paor, Annraoi M. ; Lowery, Madeleine M.
Author_Institution :
Sch. of Electr., Univ. Coll. Dublin, Dublin, Ireland
Abstract :
Deep brain stimulation (DBS) is a widely applied clinical procedure for the alleviation of pathological neural activity, and is particularly effective in suppressing the symptoms of Parkinson´s disease. The mechanisms of action of DBS remain to be fully elucidated. In this paper, we present an application to DBS of the concepts of dither injection and equivalent nonlinearity from the theory of nonlinear feedback control systems. We propose that this model provides a framework for understanding the mechanism by which an injected high-frequency signal can quench undesired oscillations in closed-loop systems of interacting neurons in the brain.
Keywords :
brain; closed loop systems; diseases; medical control systems; neurophysiology; nonlinear control systems; Parkinson disease; action mechanisms; closed-loop systems; deep brain stimulation; dither injection; equivalent nonlinearity; injected high-frequency signal; nonlinear feedback control systems; oscillations; pathological neural activity alleviation; quenching; Brain modeling; Brain stimulation; Control theory; Feedback control; Feedback loop; Frequency; Mechanical engineering; Neurons; Parkinson´s disease; Pathology; Satellite broadcasting; Control theory; deep brain stimulation (DBS); model; Action Potentials; Basal Ganglia; Computer Simulation; Humans; Models, Neurological; Nerve Net; Nonlinear Dynamics; Parkinson Disease; Therapy, Computer-Assisted;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
DOI :
10.1109/TBME.2009.2019962
