Optimization of an implantable volume conduction antenna

Wessel, Birgit; Roche, Paul; Sun, Mingui; Sclabassi, R.J.

doi:10.1109/iembs.2004.1404147

Cited by 6 publications

(4 citation statements)

References 4 publications

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“…51,52 The ultrasound approaches feature a piezoelectric transducer similar to that used in Doppler flowmeters and acoustic imaging instruments. 51,52 The ultrasound approaches feature a piezoelectric transducer similar to that used in Doppler flowmeters and acoustic imaging instruments.…”

Section: Communication Methodsmentioning

confidence: 99%

“…19,29,[31][32][33]41,42,[44][45][46][47][48][49]51,52,56 To solve the channel symmetry problem, which determines whether the same signal transmission system can be used for both uplink and downlink transmissions, we modeled the VC information channel. 19,29,[31][32][33]41,42,[44][45][46][47][48][49]51,52,56 To solve the channel symmetry problem, which determines whether the same signal transmission system can be used for both uplink and downlink transmissions, we modeled the VC information channel.…”

Section: Theoretical and Computational Modelingmentioning

confidence: 99%

“…19,[41][42][43][44][45][46]51,52 We concluded that a pair of insulated parabola-like surfaces rotated at a certain angle from these surfaces normal to the skull provides the optimal performance. We used computer simulations based on finite element methods to study the structure, shape, dimensions, location, and orientation of possible VC antennas.…”

Section: Antenna Designmentioning

confidence: 99%

“…6, was to maximize the outward propagation of the current field, which contributes to communication, and minimize the direct shorting current, which causes inefficient use of energy. 41,45,49,51,52 The panels in Fig. 6 indicate a metal layer and an insulator layer, respectively.…”

Section: Antenna Designmentioning

confidence: 99%

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Platform technologies to support brain–computer interfaces

Sclabassi¹,

Liu²,

Hackworth³

et al. 2006

FOC

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✓There is a lack of adequate and cost-effective treatment options for many neurodegenerative diseases. The number of affected patients is in the millions, and this number will only increase as the population ages. The developing areas of neuromimetics and stimulative implants provide hope for treatment, as evidenced by the currently available, but limited, implants. New technologies are emerging that are leading to the development of highly intelligent, implantable sensors, activators, and mobile robots that will provide in vivo diagnosis, therapeutic interventions, and functional replacement. Two key platform technologies that are required to facilitate the development of these neuromimetic and stimulative implants are data communication channels and the devices' power supplies. In the research reported in this paper, investigators have examined the use of novel concepts that address these two needs. These concepts are based on ionic volume conduction (VC) to provide a natural communication channel to support the functioning of these devices, and on biofuel cells to provide a continuously rechargeable power supply that obtains electrons from the natural metabolic pathways. The fundamental principles of the VC communication channels, including novel antenna design, are demonstrated. These principles include the basic mechanisms, device sensitivity, bidirectionality of communication, and signal recovery. The demonstrations are conducted using mathematical and finite element analysis, physical experiments, and animal experiments. The fundamental concepts of the biofuel cells are presented, and three versions of the cells that have been studied are discussed, including bacteria-based cells and two white cell–based experiments. In this paper the authors summarize the proof or principal experiments for both a biomimetic data channel communication method and a biofuel cell approach, which promise to provide innovative platform technologies to support complex devices that will be ready for implantation in the human nervous system in the next decade.

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