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Journal articleToumazou C, Cass T, 2007,
Cell-bionics: tools for real-time sensor processing
, PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, Vol: 362, Pages: 1321-1328, ISSN: 0962-8436- Author Web Link
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- Citations: 1
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Journal articleBanks DJ, Degenaar P, Toumazou C, 2007,
Low-power pulse-width-modulated neuromorphic spiking circuit allowing signed double byte data transfer along a single channel
, ELECTRON LETT, Vol: 43, Pages: 704-706, ISSN: 0013-5194A new design methodology is presented for outputting digital information from asynchronous analogue circuits, which allows signed frequency encoded signal transfer along a single channel. The circuit outputs data as a series of rate and pulse-width encoded spikes: pulse-width modulation is used to represent vector and pulse frequency modulation is used to represent magnitude symbiotically. This technique can be used to increase the bandwidth of multiplexed neural signals, such as for address event registration, or by using a time-to-first-spike system, to multiplex signals on a single channel. Additionally, feedback has been used to improve the switching speed of current starved inverters, reducing their power consumption by over an order of magnitude.
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Journal articleCannillo F, Toumazou C, Lande TS, 2007,
Bulk-drain connected load for subthreshold MOS current-mode logic
, ELECTRONICS LETTERS, Vol: 43, Pages: 662-664, ISSN: 0013-5194- Author Web Link
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- Citations: 12
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Journal articleGeorgiou P, Toumazou C, 2007,
A Silicon Pancreatic Beta Cell for Diabetes
, IEEE Transactions on Biomedical Circuits and Systems, Vol: 1, Pages: 39-49The paper will consider how silicon devices such as ion-sensitive field effect transistors can be used to model metabolic functions in biology. In a first example, a biologically inspired silicon beta cell is presented to serve as the main building block of an artificial pancreas. This is to be used for real-time glucose sensing and insulin release for diabetics. This system presents the first silicon implementation of a metabolic cell capable of exhibiting variable bursting behavior upon glucose stimulation. Based on the Hodgkin and Huxley formalism, this approach achieves dynamics similar to that of biological beta cells by using devices biased in the subthreshold regime. In addition to mimicking the physiological behavior of the beta cell, the circuit achieves good power efficiency, measured to be 4.5 uW
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Journal articleTriantis IF, Woods V, Eftekhar A, et al., 2007,
Advances in Neural Interfacing
, IEEE Circuits and Systems Society Newsletter, Vol: 1 -
Journal articleToumazou C, Shepherd L, 2007,
Using transistors to linearise biochemistry
, ELECTRONICS LETTERS, Vol: 43, Pages: 65-67, ISSN: 0013-5194- Author Web Link
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- Citations: 5
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Journal articlePremanode B, Toumazou C, 2007,
A novel, low power biosensor for real time monitoring of creatinine and urea in peritoneal dialysis
, SENSORS AND ACTUATORS B-CHEMICAL, Vol: 120, Pages: 732-735, ISSN: 0925-4005- Author Web Link
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- Citations: 62
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Journal articleNikolic K, Grossman N, Yan H, et al., 2007,
A non-invasive retinal prosthesis - testing the concept.
, Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference, Pages: 6365-6368, ISSN: 1557-170XWe have developed a testing platform for a novel type of retinal prosthesis. Our system uses an array of light sources as non-contact stimulators. The platform consists of an imaging system based on a CMOS camera, PC based image processing, and a stimulation address system carried out on a Field Programmable Gated Array which addresses a matrix array of LEDs. Special optics are used to focus the light from the LED array onto light sensitized cells.
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Conference paperConstandinou TG, Georgiou J, Doumanidis CC, et al., 2007,
Towards an Implantable vestibular prosthesis: The surgical challenges
, 3rd International IEEE/EMBS Conference on Neural Engineering, Publisher: IEEE, Pages: 40-+ -
Conference paperLi X, Constandinou TG, Eftekhar A, et al., 2007,
Towards a bionic neural link for implantable prosthetics
, IEEE EMBS Conference on Neural Engineering, Publisher: Institute of Electrical and Electronics Engineers (IEEE), Pages: 85-88 -
Conference paperCannillo F, Toumazou C, 2007,
Fractional-rate FM-to-digital Δ-Σ converters
, IEEE International Symposium on Circuits and Systems, Publisher: IEEE, Pages: 3824-+, ISSN: 0271-4302 -
Conference paperYue X, Drakakis EA, Ye H, et al., 2007,
An on-line, multi-parametric, multi-channel physicochemical monitoring platform for stem cell culture bioprocessing
, IEEE International Symposium on Circuits and Systems, Publisher: IEEE, Pages: 1215-+, ISSN: 0271-4302- Author Web Link
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- Citations: 1
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Conference paperHo MMS, Lande TS, Toumazou C, 2007,
Efficient computation of the LF/HF ratio in heart rate variability analysis based on bitstream filtering
, IEEE Biomedical Circuits and Systems Conference, Publisher: IEEE, Pages: 17-20- Author Web Link
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- Citations: 1
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Conference paperBanks D, Degenaar P, Toumazou C, 2007,
A bio-inspired adaptive retinal processing neuron with multiplexed spiking outputs
, IEEE International Symposium on Circuits and Systems, Publisher: IEEE, Pages: 2375-2378, ISSN: 0271-4302- Author Web Link
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- Citations: 1
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Conference paperHuang Y, Drakakis EM, Toumazou C, 2007,
A wide tuning range CMOS oscillator for an optoelectronic retinal prosthesis system
, IEEE International Symposium on Circuits and Systems (ISCAS), Publisher: IEEE, Pages: 2359-2362, ISSN: 0271-4302 -
Conference paperKatsiri E, Ho M, Wang L, et al., 2007,
Embedded real-time heart variability analysis
, 4th International Workshop on Wearable and Implantable Body Sensor Networks (BSN 2007), Publisher: SPRINGER, Pages: 128-+, ISSN: 1680-0737- Author Web Link
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- Citations: 3
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Conference paperGeorgiou P, Triantis IF, Constandinou TG, et al., 2007,
Spiking Chemical Sensor (SCS): A new platform for neuro-chemical sensing
, IEEE EMBS Conference on Neural Engineering, Publisher: Institute of Electrical and Electronics Engineers (IEEE), Pages: 126-129 -
Conference paperNikolic K, Grossman N, Yan H, et al., 2007,
A Non-Invasive Retinal Prosthesis - Testing the Concept
, 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBS), Publisher: IEEE, Pages: 6364-6367, ISSN: 1557-170X -
Conference paperYue X, Drakakis EM, Hua Y, et al., 2007,
An On-line, Multi-Parametric, Multi-Channel Physicochemical Monitoring Platform for Stem Cell Culture Bioprocessing
, IEEE International Symposium on Circuits and Systems (ISCAS), Publisher: IEEE, Pages: 1215-1218 -
Conference paperGeorgiou J, Constandinou T G, Toumazou C, 2007,
A Micropower Cochlear Prosthesis System Demonstrator
, IEEE International Symposium on Circuits and Systems, Publisher: IEEE
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