Searched for: subject%3A%22neural%255C%2Bstimulation%22
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French, P.J. (author), Lawand, N. (author), Miralles, A. (author)
Cochlear implants restore hearing to many people around the world. These devices are hand-made and have limitations in terms of sound quality. The maximum number of electrodes at present is 22 and this means that the sound spectrum is divided into 22 blocks. Furthermore, the breadth of the implant limits penetration and thus lower frequencies...
conference paper 2022
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Urso, A. (author)
This thesis focus on improving the power efficiency of DC-DC converters for two different applications. In the field of implantable medical devices, electrical stimulation has been used as an established treatment for several diseases. It aims to deliver a well-defined amount of charge to the tissue in order to build up a specific electric field...
doctoral thesis 2021
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Verzijl, Hubald (author)
<i>Neuropathic pain</i> (NP) affects approximately seven to ten percent of the general population. Seventeen percent of NP patients scored their life as “worse than death”. A myriad of causes may underlie NP, such as stroke or spinal cord injury. Also, damage or disease of the <i>peripheral nervous system</i> (PNS) may result in NP. One of the...
master thesis 2021
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Urso, A. (author), Giagka, Vasiliki (author), van Dongen, M.N. (author), Serdijn, W.A. (author)
In order to recruit neurons in excitable tissue, constant current neural stimulators are commonly used. Recently, ultra high-frequency (UHF) stimulation has been proposed and proven to have the same efficacy as constant-current stimulation. UHF stimulation uses a fundamentally different way of activating the tissue: each stimulation phase is...
journal article 2019
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Verkleij, Simon (author), Salden, Tom (author)
The goal of this Bachelor graduation project is to make an electrical stimulator that can be used to help people empty their urinary bladder. Patients that are unable to relax the urethral sphincter are most commonly treated by mechanically emptying the bladder or by sacral root stimulation where the roots are selectively cut. <br/><br/>The...
bachelor thesis 2018
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Engelen, Max (author), van den Heuvel, Philip (author)
In the REstore Voiding Urinary rEtention (REValUE) project, a high frequency stimulator is designed that should be able to determine the optimal parameters to block the urethral sphincter. In this report the design of the control, interface, current source and electrode switching circuit of the device is explained – the other parts are explained...
bachelor thesis 2018
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Ngamkham, W. (author)
Cochlear Implants (CIs) are prosthetic devices that restore hearing in profoundly deaf patients by bypassing the damaged parts of the inner ear and directly stimulating the remaining auditory nerve fibers in the cochlea with electrical pulses. This thesis describs the electronic circuit design of various modules for application in CIs in order...
doctoral thesis 2015
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Van Dongen, M.N. (author)
Neural stimulation is an established treatment methodology for an increasing number of diseases. Electrical Stimulation injects a stimulation signal through electrodes that are implanted in the target area of the central or peripheral nervous system in order to evoke a specific neuronal response that suppresses or treats pathological activity....
doctoral thesis 2015
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Rodrigues, F.J.O. (author), Mendes, P. (author), Bartek, M. (author), Mimoun, B.A.Z. (author)
In this work a cylindrical electrode array to be used for electrical stimulation of sacral nerve roots is studied in respect to its ability to achieve selective stimulation of various spatial regions of the nerve bundle. Simulation results achieved on a simplified model consisting of 6 electrodes evenly distributed along the sacral root...
conference paper 2011
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Van Dongen, M.N. (author)
Neural stimulators have the potential of becoming very important devices for the treatment of a wide variety of diseases. One of the major problems with existing stimulators is the limited waveform adjustability. This precludes the use of sophisticated stimulation programs and thereby affects the efficacy of the therapy applied. Another issue is...
master thesis 2009
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