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New PDF release: Implantable neural prostheses 1: devices and applications

By David Zhou, Elias Greenbaum

ISBN-10: 038777260X

ISBN-13: 9780387772608

ISBN-10: 0387772618

ISBN-13: 9780387772615

This booklet and its better half quantity describe state of the art advances in suggestions linked to implantable neural prosthetic units and their functions. Researchers, engineers, clinicians, scholars, and any expert during this box will achieve a deeper realizing of the neural prosthetic thoughts at present on hand for quite a lot of biomedical applications.

In half one in all this two-volume series, Implantable Neural Prostheses 1: units and Applications, the point of interest is on implant designs and purposes. units lined contain sensory prosthetic units equivalent to cochlear implants, auditory midbrain implants, visible implants, spinal wire stimulators, and motor prosthetic units together with deep mind stimulators, Bions, and cardiac electro-stimulators. Readers also will comprehend the regulatory approval method within the U.S. and Europe for implantable clinical units.

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Additional resources for Implantable neural prostheses 1: devices and applications

Sample text

For retinal implants, the implanted electronics are located in or near the eye. The power must be dissipated in the surrounding tissue, which will result in a local temperature rise. Thermal effects of the implant on tissue are one of the primary safety concerns related to visual prostheses. The technical challenge is quite substantial in regard to heat dissipation of electronic components [38]. Studies of thermal effects of the implants on tissue have been carried out for retinal and subretinal prostheses [39, 90].

To place the retinal implant on the retinal surface, the majority of vitreous gel will be removed and the vitreous cavity will be filled with liquid. The liquid in the eye acts as a heat sink in helping thermal dissipation of implanted microstimulators. To reduce possible thermal damages, the electronic stimulator package should be positioned away from the tissue surface of stimulation sites. Recently, Sailer et al. [38] studied the thermal effects of infrared (IR) irradiation onto the retina. IR irradiation has been considered as an option to supply additional energy for microphotodiode-based subretinal implants.

Humayun MS, Weiland JD, Fujii GY, et al. (2003) Visual perception in a blind subject with a chronic microelectronic retinal prosthesis. Vision Res 43:2573–2581 21. Clausen J (1955) Visual sensations (Phosphenes) produced by AC sine wave stimulation. Acta Physiol Neurol Scand Supp 94:1–101 22. Brindley G, Lewin W (1968) The sensations produced by electrical stimulation of the visual cortex. J Physiol (London) 196:479–493 23. Weiland JD, Humayun MS (2008) Visual prosthesis. Proc IEEE 96:1076–1084 24.

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Implantable neural prostheses 1: devices and applications by David Zhou, Elias Greenbaum


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