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CHARACTERIZATION OF THE ENCAPSULATION PROCESS OF DEEP BRAIN STIMULATION ELECTRODES USING IMPEDANCE SPECTROSCOPY IN A RODENT MODEL

Topics: Electromagnetic Fields in Biology and Medicine; Medical Signal Acquisition, Analysis and Processing; Physiological Processes and Bio-Signal Modeling, Non-Linear Dynamics; Time and Frequency Response; Wearable Sensors and Systems

Authors: K. Badstübner 1 ; T. Kröger 1 ; E. Mix 2 ; U. Gimsa 3 ; R. Benecke 1 and J. Gimsa 1

Affiliations: 1 University of Rostock, Germany ; 2 Clinic of Neurology, Germany ; 3 Leibniz Institute for Farm Animal Biology, Germany

Keyword(s): EIS, Intracerebral electrodes, Basal ganglia, Subthalamic nucleus, Rat brain, Chronic instrumentation, 6-OHDA, Parkinson’s disease.

Related Ontology Subjects/Areas/Topics: Applications and Services ; Biomedical Engineering ; Biomedical Signal Processing ; Computer Vision, Visualization and Computer Graphics ; Devices ; Electromagnetic Fields in Biology and Medicine ; Health Information Systems ; Human-Computer Interaction ; Informatics in Control, Automation and Robotics ; Medical Image Detection, Acquisition, Analysis and Processing ; Physiological Computing Systems ; Physiological Processes and Bio-Signal Modeling, Non-Linear Dynamics ; Signal Processing, Sensors, Systems Modeling and Control ; Time and Frequency Response ; Time-Frequency Analysis ; Wearable Sensors and Systems

Abstract: Deep brain stimulation (DBS) is effective for the treatment of patients with Parkinson’s disease (PD), especially in advanced stages which are refractory to conventional therapy. Despite of the regular use in clinical therapy, rodent models for basic research into DBS are not routinely available. The main reason is the geometry difference from rodents to humans, imposing larger problems in the transfer of the stimulation conditions than from primates to humans. For rodents, the development of miniaturized mobile stimulators and stimulation parameters, as well as improved electrode materials and geometry are desirable. The impedance of custom made, cylindrical (contact diameter 200 µm, length 100 µm), platinum/iridium electrodes has been measured in vivo for two weeks to characterize the influence of electrochemical processes and of the adherent cell growth at the electrode surface. During the encapsulation process, the real part of the electrode impedance at 10 kHz doubled with respe ct to its initial value after a characteristic decrease by approximately one third at the second day. An outlook is given on further investigations with different electrode designs for long-term DBS. (More)

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Paper citation in several formats:
Badstübner, K.; Kröger, T.; Mix, E.; Gimsa, U.; Benecke, R. and Gimsa, J. (2012). CHARACTERIZATION OF THE ENCAPSULATION PROCESS OF DEEP BRAIN STIMULATION ELECTRODES USING IMPEDANCE SPECTROSCOPY IN A RODENT MODEL. In Proceedings of the International Conference on Bio-inspired Systems and Signal Processing (BIOSTEC 2012) - BIOSIGNALS; ISBN 978-989-8425-89-8; ISSN 2184-4305, SciTePress, pages 125-130. DOI: 10.5220/0003790301250130

@conference{biosignals12,
author={K. Badstübner. and T. Kröger. and E. Mix. and U. Gimsa. and R. Benecke. and J. Gimsa.},
title={CHARACTERIZATION OF THE ENCAPSULATION PROCESS OF DEEP BRAIN STIMULATION ELECTRODES USING IMPEDANCE SPECTROSCOPY IN A RODENT MODEL},
booktitle={Proceedings of the International Conference on Bio-inspired Systems and Signal Processing (BIOSTEC 2012) - BIOSIGNALS},
year={2012},
pages={125-130},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003790301250130},
isbn={978-989-8425-89-8},
issn={2184-4305},
}

TY - CONF

JO - Proceedings of the International Conference on Bio-inspired Systems and Signal Processing (BIOSTEC 2012) - BIOSIGNALS
TI - CHARACTERIZATION OF THE ENCAPSULATION PROCESS OF DEEP BRAIN STIMULATION ELECTRODES USING IMPEDANCE SPECTROSCOPY IN A RODENT MODEL
SN - 978-989-8425-89-8
IS - 2184-4305
AU - Badstübner, K.
AU - Kröger, T.
AU - Mix, E.
AU - Gimsa, U.
AU - Benecke, R.
AU - Gimsa, J.
PY - 2012
SP - 125
EP - 130
DO - 10.5220/0003790301250130
PB - SciTePress