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CreatorTitleDescriptionSubjectDate
326 Harrison, Reid R.;Normann, Richard A.Low-power integrated circuit for a wireless 100-electrode neural recording systemIn the past decade, neuroscientists and clinicians have begun to use implantable MEMS multielectrode arrays (e.g., [1]) to observe the simultaneous activity of many neurons in the brain. By observing the action potentials, or "spikes," of many neurons in a localized region of the brain it is possibl...Neural recording system; Utah Microelectrode Array; Integrated neural interface2007
327 Harrison, Reid R.;Normann, Richard A.Low-power integrated circuit for a wireless 100-electrode neural recording systemIn the past decade, neuroscientists and clinicians have begun to use implantable MEMS multielectrode arrays (e.g., [1]) to observe the simultaneous activity of many neurons in the brain. By observing the action potentials, or "spikes," of many neurons in a localized region of the brain it is possibl...Electrode; Multielectrode arrays (MEA); Neural recording; Low-power circuits; Wireless2006-01-01
328 Harrison, Reid R.Low-power integrated circuit for adaptive detection of action potentials in noisy signalsThe advent of microelectrode arrays allowing for the simultaneous recording of 100 or more neurons is leading to significant advances in science and medicine. However, the amount of data generated by these arrays presents a technical challenge if these systems are ever to be fully implanted for n...Low-power; Spike detection; Neural recording; Low-power circuit design; Neuroprosthesis; CMOS2003-01-01
329 Harrison, Reid R.Low-power low-noise CMOS amplifier for neural recording applicationsThere is a need among scientists and clinicians for low-noise low-power biosignal amplifiers capable of amplifying signals in the millihertz-to-kilohertz range while rejecting large dc offsets generated at the electrode-tissue interface. The advent of fully implantable multielectrode arrays has cre...Bioamplifier; Analog integrated circuits; Biosignal amplifier; Low noise; Low-power circuit design; Neural recordings; Neural amplifier; Noise efficiency factor; Subthreshold circuit design; Weak inversion2003-06
330 Furse, Cynthia M.; Harrison, Reid R.Low-power STDR CMOS sensor for locating faults in aging aircraft wiringA CMOS sensor used to locate intermittent faults on live aircraft wires is presented. A novel architecture was developed to implement the Sequence Time Domain Reflectometry method on a 0.5- m integrated circuit. The sensor locates short or open circuits on active wires with an accuracy of +/-1 ft w...Aging aircraft wire; CMOS sensors; Fault detection; Pseudo-random noise; Reflectometry methods; Spread spectrum; Wire fault location2006-01-01
331 Harrison, Reid R.Low-power STDR CMOS sensor for locating faults in aging aircraft wiringA CMOS sensor used to locate intermittent faults on live aircraft wires is presented. A novel architecture was developed to implement the Sequence Time Domain Reflectometry method on a 0.5- m integrated circuit. The sensor locates short or open circuits on active wires with an accuracy of +/-1 ft w...CMOS sensor; Pseudo-random noise; Reflectometry Methods; Spread spectrum; Wire fault location; Time Domain Vernier (TDV) method2007-01
332 Harrison, Reid R.Low-power, low-noise CMOS amplifier for neural recording applicationsThere is a need among scientists and clinicians for lownoise, low-power biosignal amplifiers capable of amplifying signals in the mHz to kHz range while rejecting large dc offsets generated at the electrode-tissue interface. The advent of fully-implantable multielectrode arrays has created the nee...2002-01-01
333 Khan, Faisal HabibMagnetic stimulation of mammalian peripheral nerves in vivo: An alternative to functional electrical stimulationFunctional electrical stimulation is the current gold standard for stimulating neuronal interfaces for functional neuromuscular and cortical applications, but it is not without its drawbacks. One such fault is the need to have direct electrical contact with the nerve tissue, and any side effect...2014-01-01
334 Furse, Cynthia M.Making a world of difference recruitment of undergraduate students at USUThis paper describes two creative methods that are used to recruit undergraduate students at Utah State University. The fmt is "Engineering State", a four day hands-on immersement in a wide array of engineering disciplines, and the second is a slide show called "Making a World of Difference - Women ...Student recruitment; Undergraduate recruitment; Engineering State1999
335 Furse, Cynthia M.Manufacturing considerations for implantable antennasDesign of implantable antennas poses a unique set of challenges since antennas need to be small, biocompatible, and operate in the highly lossy environment of the human body. A recent review identified miniaturization challenges and how they have been managed in a variety of designs. [1] It also not...2013-01-01
336 Mathews, V. JohnMassively parallel algorithm for vector quantizationThis paper is concerned with the parallel implementation of a vector quantizer system on Maspar MP-2, a single-instruction, multiple-data (SIMD) massively parallel computer. A vector quantizer (VQ) consists of two mappings: an encoder and a decoder. The encoder assigns to each input vector the inde...1995
337 Khan, Faisal HabibMaximum power point tracking of stirling generator and ocean wave energy conversion systems using a two-stage power converterWave energy has become one of the most promising renewable energy resources nowadays. By using a linear generator/alternator, the periodic piston motion of the wave energy conversion system (WEC) can be converted to AC voltage with variable RMS amplitude and frequency; this process is comparable to ...2013-01-01
338 Harrison, Reid R.MDAC synapse for analog neural networksEfficient weight storage and multiplication are important design challenges which must be addressed in analog neural network implementations. Many schemes which treat storage and multiplication separately have been previously reported for implementation of synapses. We present a novel synapse c...Multiplying digital-to-analog converter; MDAC synapse; Analog neural networks2004-01-01
339 Mathews, V. John; Clark, Edward B.Mean frequency estimation of narrowband signalsAbstract-This letter shows that the single frequency approximation for a narrowband lowpass signal embedded in white noise using the Pisarenko harmonic decomposition algorithm is approximately the power-weighted mean frequency of the signal. Experimental results indicate that this method is superio...2004
340 Mathews, V. John; Clark, Edward B.Mean frequency estimation of narrowband signals and its application to doppler ultrasound blood velocity waveform estimationABSTRACT Many applications involving Doppler signals require the accurate estimation of the power-weighted mean frequency over short durations of the signal due to it's nonstationarity. This paper presents a novel algorithm for estimating mean frequencies using the eigenstructure of the covariance ...2002
341 Furse, Cynthia M.Measured multi-user MIMO capacity in AircraftThe multipath richness typical of aircraft channels represents a potentially well-suited environment for multi-user multiple-input multiple-output technology (MU-MIMO). This paper presents results from measurements of the achievable MU-MIMO data rates in a Rockwell T-39 Sabreliner, using an open-so...2010
342 Furse, Cynthia M.Measurement and modeling of interference for multiple antenna systemThis paper provides a detailed signal model based on network theory to predict the multi-antenna capacity in the presence of co- and adjacent channel interference. This model expands on previous channel models by including the simultaneous effects of interference, antenna matching, efficiency, direc...2010-01-01
343 Furse, Cynthia M.Measurement and modeling of multiuser multiantenna system in aircraft in the presence of electromagnetic noise and interferenceThis paper evaluates the accuracy with which the performance of a multi-user multi-antenna system can be predicted with and without considering co-channel interference and noise (Gaussian, α- stable and Cauchy) using a site-specific 3D ray-tracing algorithm as well as with statistical models with G...2011-01-01
344 Harrison, Reid R.Measuring neural correlates of insect escape behaviors using a miniature telemetry systemThe firing patterns of visual neurons tracking approaching objects need to be translated into appropriate motor activation sequences to generate escape behaviors. Locusts possess an identified neuron highly sensitive to approaching objects (looming stimuli), thought to play an important role in ...Escape behaviors; Collision avoidance; Looming stimuli; Lobula Giant Motion Detector (LGMD); Telemetry2009-04
345 Stringfellow, Gerald B.Mechanism for liquid phase epitaxial growth of nonequilibrium compositions producing a coherent interfaceA model is presented for growth by so-called composition pulling, wherein an epitaxial deposit grows coherently but with a composition different from that which would be in bulk equilibrium with the liquid phase from which growth occurs. The breakdown of coherent growth occurs when a dislocation nuc...Lattice-matching overgrowths; Composition pulling; Dislocation interface1977
346 Furse, Cynthia M.; Gandhi, Om P.Memory efficient method of calculating specific absorption rate in CW FDTD simulationsSpecific absorption rate (SAR) distributions in man models are often calculated using the finite-difference time-domain (FDTD) method. The traditional method of calculating SAR requires calculation and storage of the three electric field components in each cell and is therefore very time- and memor...Specific absorption rates; SAR; FDTD simulations; Finite-difference time-domain; Mass-normalized time-averaged energy distribution1996-05
347 Mastrangelo, Carlos H.MEMS-based hemispherical resonator gyroscopesThis paper introduces a fabrication technique that uses planar MEMS micromachining processes to produce hemispherical resonating shells for gyroscopes. The hemispheres exhibit a quality factor in excess of 20,000 with resonant frequencies in the range of 20 kHz for the 4-node wineglass mode. The fab...2012-01-01
348 Harrison, Reid R.; Tabib-Azar, MassoodMicrocontroller-based wireless recording unit for neurodynamic studies in saltwaterThis paper presents the design of a biocompatible implantable neural-recording unit for Aplysia californica, which is a common sea slug. Low-voltage extracellular neural signals (< 250 μV) are recorded using a high-performance low-power low-noise preamplifier that is packaged with programmable dig...Sea slug; Data acquisition; Implantable; Low-noise amplifier; Low-power circuits; Neural sensor; Telemetry2006-10
349 Harrison, Reid R.; Tabib-Azar, MassoodMicrocontroller-based wireless recording unit for neurodynamic studies in saltwaterThis paper presents the design of a biocompatible implantable neural-recording unit for Aplysia californica, which is a common sea slug. Low-voltage extracellular neural signals (< 250 ?V) are recorded using a high-performance low-power low-noise preamplifier that is packaged with programmable digi...Sea slug; Data acquisition; Implantable; Low-noise amplifier; Low-power circuits; Neural sensor; Telemetry2006-01-01
350 Mastrangelo, Carlos H.; Tabib-Azar, MassoodMicrofabrication of plasma nanotorch tips for localized etching and depositionAbstract-We present the microfabrication and initial testing of an AFM-tip like device, or nanotorch, that is capable of generating a very localized microplasma at its tip. The submicron region near its tip provides a unique manufacturing environment where new methods for controlled direct-write mic...2010
326 - 350 of 577