Please use this identifier to cite or link to this item: https://doi.org/10.1109/EMBC.2013.6610232
Title: A 24 Vpp compliant biphasic stimulator for inductively powered animal behavior studies
Authors: Nag, S. 
Sharma, D.
Thakor, N.V. 
Issue Date: 2013
Citation: Nag, S.,Sharma, D.,Thakor, N.V. (2013). A 24 Vpp compliant biphasic stimulator for inductively powered animal behavior studies. Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS : 3242-3245. ScholarBank@NUS Repository. https://doi.org/10.1109/EMBC.2013.6610232
Abstract: Stimulation of biological neurons using electrical charges has gained popularity in neuro-engineering studies. Wireless power delivery to electrical stimulators is an essential requirement for long term and maintenance-free implantable applications. Voltage compliance is often a limiting factor in these systems. We present an inductively powered biphasic stimulator that is capable of exhibiting 24 Vpp load voltage compliance, while harvesting up to 13 V. The stimulator can deliver currents ranging from 10 μA to 6 mA. The inductive energy harvesting system operates at a low carrier frequency of 134.2 KHz for enhanced depth of penetration in biological medium. The near-field harvester works reliably for up to 50 mm inter-antenna distance. Noise performance and charge balancing accuracy have also been improved due to the absence of a boost switching circuit and floating current source based architecture. In-vivo motor and visual cortex stimulations have been performed using epi-dural screw electrodes on an awake behaving and anesthetized Wister rat. © 2013 IEEE.
Source Title: Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
URI: http://scholarbank.nus.edu.sg/handle/10635/128770
ISBN: 9781457702167
ISSN: 1557170X
DOI: 10.1109/EMBC.2013.6610232
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