Search Results - "Kovacs, G. T. A."

Robust ballistocardiogram acquisition for home monitoring by Inan, O T, Etemadi, M, Wiard, R M, Giovangrandi, L, Kovacs, G T A

“…The ballistocardiogram (BCG) measures the reaction of the body to cardiac ejection forces, and is an effective, non-invasive means of evaluating cardiovascular…”
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Noninvasive Measurement of Physiological Signals on a Modified Home Bathroom Scale by Inan, Omer T., Park, Dookun, Giovangrandi, Laurent, Kovacs, Gregory T. A.

“…A commercial bathroom scale with both handlebar and footpad electrodes was modified to enable measurement of four physiological signals: the ballistocardiogram…”
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Non-invasive cardiac output trending during exercise recovery on a bathroom-scale-based ballistocardiograph by Inan, O T, Etemadi, M, Paloma, A, Giovangrandi, L, Kovacs, G T A

“…Cardiac ejection of blood into the aorta generates a reaction force on the body that can be measured externally via the ballistocardiogram (BCG). In this…”
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A low-noise ac-bridge amplifier for ballistocardiogram measurement on an electronic weighing scale by Inan, O T, Kovacs, G T A

“…Ballistocardiography is a non-invasive technique for evaluating cardiovascular health. This note presents an ac-bridge amplifier for low-noise…”
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Evaluating the Lower-Body Electromyogram Signal Acquired From the Feet As a Noise Reference for Standing Ballistocardiogram Measurements by Inan, O T, Kovacs, G T A, Giovangrandi, L

“…The ballistocardiogram (BCG) is a measure of the reaction force of the body to cardiac ejection of blood. A variety of systems can be used for BCG detection,…”
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CMOS integrated ciliary actuator array as a general-purpose micromanipulation tool for small objects by Suh, J.W., Darling, R.B., Bohringer, K.-F., Donald, B.R., Baltes, H., Kovacs, G.T.A.

“…The first micromachined bimorph organic ciliary array with on-chip CMOS circuitry is presented. This ciliary array is composed of an 8/spl times/8 array of…”
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Field Evaluation of an Electrochemical Probe for in Situ Screening of Heavy Metals in Groundwater by Herdan, Janet, Feeney, Rosemary, Kounaves, Samuel P, Flannery, Anthony F, Storment, Christopher W, Kovacs, Gregory T. A, Darling, R. Bruce

“…The use of an electrochemically based probe for in situ determination of heavy metals in groundwater is described. The in situ probe, consisting of a…”
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An unconditionally stable two-stage CMOS amplifier by Reay, R.J., Kovacs, G.T.A.

“…This paper describes a two-stage CMOS amplifier that is stable for any capacitive load. This is achieved through the use of an optimized cascoded compensation…”
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Silicon-substrate microelectrode arrays for parallel recording of neural activity in peripheral and cranial nerves by Kovacs, G.T.A., Storment, C.W., Halks-Miller, M., Belczynski, C.R., Santina, C.C.D., Lewis, E.R., Maluf, N.I.

“…A new process for the fabrication of regeneration microelectrode arrays for peripheral and cranial nerve applications is presented. This type of array is…”
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Regeneration microelectrode array for peripheral nerve recording and stimulation by Kovacs, G.T.A., Storment, C.W., Rosen, J.M.

“…A microelectrode array capable of recording from and stimulating peripheral nerves at prolonged intervals after surgical implantation has been demonstrated…”
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Rapid Assessment of Cardiac Contractility on a Home Bathroom Scale by Etemadi, M., Inan, O. T., Giovangrandi, L., Kovacs, G. T. A.

“…Analyzing systolic time intervals-specifically the preejection-period (PEP)-is widely accepted as one of the few methods for the noninvasive assessment of…”
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Range correlation and I/Q performance benefits in single-chip silicon Doppler radars for noncontact cardiopulmonary monitoring by Droitcour, A.D., Boric-Lubecke, O., Lubecke, V.M., Lin, J., Kovacs, G.T.A.

“…Direct-conversion microwave Doppler-radar transceivers have been fully integrated in 0.25-/spl mu/m silicon CMOS and BiCMOS technologies. These chips,…”
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Flexible, dry-released process for aluminum electrostatic actuators by Storment, C.W., Borkholder, D.A., Westerlind, V., Suh, J.W., Maluf, N.I., Kovacs, G.T.A.

“…We present an all-aluminum MEMS process (Al-MEMS) for the fabrication of large-gap electrostatic actuators with process steps that are compatible with the…”
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A microfluidic shadow imaging system for the study of the nematode Caenorhabditis elegans in space by Lange, Dirk, Storment, Christopher W., Conley, Catharine A., Kovacs, Gregory T.A.

“…This article reports on a miniaturized shadow imaging device for the investigation of the behavioral effects of spaceflight on the nematode Caenorhabditis…”
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A multiparameter wearable physiologic monitoring system for space and terrestrial applications by Mundt, C.W., Montgomery, K.N., Udoh, U.E., Barker, V.N., Thonier, G.C., Tellier, A.M., Ricks, R.D., Darling, R.B., Cagle, Y.D., Cabrol, N.A., Ruoss, S.J., Swain, J.L., Hines, J.W., Kovacs, G.T.A.

“…A novel, unobtrusive and wearable, multiparameter ambulatory physiologic monitoring system for space and terrestrial applications, termed LifeGuard, is…”
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High-Frequency Electrical Stimulation of Cardiac Cells and Application to Artifact Reduction by Dura, Burak, Chen, Michael Q., Inan, Omer T., Kovacs, Gregory T. A., Giovangrandi, Laurent

“…A novel modality for the electrical stimulation of cardiac cells is described. The technique is based on HF stimulation-burst of HF (1-25 kHz) biphasic square…”
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A traction stress sensor array for use in high-resolution robotic tactile imaging by Kane, B.J., Cutkosky, M.R., Kovacs, G.T.A.

“…A high resolution large-area array capable of resolving the three independent components of a 2D triaxial contact stress profile has been developed. The array,…”
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Force-sensing microprobe for precise stimulation of mechanosensitive tissues by Kane, B.J., Storment, C.W., Crowder, S.W., Tanelian, D.L., Kovacs, G.T.A.

“…Quantitative study of the transduction mechanisms in mechanically sensitive nerve terminals has been impeded by the lack of instrumentation with which to…”
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A thermal signal generator probe for the study of neural thermal transduction by Maluf, N.I., McNutt, E.L., Monroe, S., Tanelian, D.L., Kovacs, G.T.A.

“…The study of thermal transduction in neural tissues has been impeded by the lack of instrumentation able to generate complex, focal temperature variations…”
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A method for evaluating the selectivity of electrodes implanted for nerve simulation by Liang, D.H., Kovacs, G.T.A., Storment, C.W., White, R.L.

“…The authors describe a method based on the compound action potential (CAP) that provides a precise measurement of the selectivity of an electrode array and yet…”
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