Results 171 to 180 of about 5,209 (199)

Estimation of Phase Velocities of Microtremors

Zisin (Journal of the Seismological Society of Japan. 2nd ser.), 1981
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Clinical Utility of Ocular Assessments in Sport-Related Concussion: A Scoping Review. [PDF]

J Funct Morphol Kinesiol
Walshe A, Daly E, Ryan L.
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Interferometry for ocular microtremor measurement

Applied Optics, 2001
The eyes of all normal subjects undergo a continuous, low-amplitude, high-frequency tremor called ocular microtremor (OMT). A number of potential clinical applications of OMT have been identified, including the prediction of outcome in coma. To date, OMT has been investigated primarily with an eye-contacting piezoelectric probe.
G, Boyle, D, Coakley, J F, Malone
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Double-array refraction microtremors

Journal of Applied Geophysics, 2015
Abstract We present a critical analysis of the limitations of the standard ReMi technique, specifically in the case of directional sources, and we propose an alternative approach for the efficient acquisition and processing of passive surface wave data, that exploits a simple and yet effective field layout (two linear orthogonal arrays) and ...
Strobbia, Claudio, BOAGA, JACOPO, CASSIANI, GIORGIO   +2 more
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Sources of variance in ocular microtremor

Physiological Measurement, 1994
This study presents a preliminary investigation of the sources of variance in the measurement of ocular microtremor frequency in a normal population. When the results from both experienced and relatively inexperienced operators are pooled, factors that contribute significantly to the total variance include the measurement procedure (p < 0.001), day-to ...
N F, Sheahan, D, Coakley, C, Bolger, D, O'Neill, G, Fry, J, Phillips, J F, Malone   +6 more
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Exploration Methods Using Microtremor Array.

Proceedings of the 9th SEGJ International Symposium, 2009
Exploration methods for S-wave velocity structure using microtremor array measurement, e. g., the Spacial AutoCorrelation method (SPAC) attract the practitioners and researchers of Earthquake Engineering and Seismology owing to their simplicity, operability in the field work, to require relatively low cost and to the sufficient consistency of their ...
Toshiaki Yokoi, Dayra Yessenia Blandon Sandino, Sos Samveli Margaryan, Moneer Abdullah Mohamed Al-Masani, Andres Jose Alfaro Castillo, Koichi Hayashi   +5 more
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Non-invasive brainstem monitoring: the ocular microtremor

Neurological Research, 2007
The ocular microtremor (OMT) is mediated by the oculomotor area of the brainstem and is altered in several pathologic states, including traumatic brain injury, general anesthesia, brain death, coma, Parkinsonism and multiple sclerosis. The EYETECT tremor monitor is a non-invasive means of measuring the frequency and amplitude of this microscopic tremor.
James, Robertson, Shelly, Timmons
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Microtremor recordings in Northern Mississippi

Engineering Geology, 2014
Abstract This paper presents the results of 305 single-point microtremor recordings, covering Northern Mississippi that is situated within the Upper Mississippi Embayment area. Both long- and short-term recordings were obtained by a LE-3D/20s seismometer, over a large network of points where the unconsolidated sediment thickness (UST) varies from ...
Z. Guo, A. Aydin, J.S. Kuszmaul
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Miniature array analysis of microtremors

GEOPHYSICS, 2013
We suggest observing microtremors by using a miniature array consisting of vertical-component seismometers that are placed at the center and on the circumference of a circle with a radius of several tens of centimeters, for identifying the phase velocities of Rayleigh waves with wavelengths exceeding several tens or a hundred meters.
Ikuo Cho, Shigeki Senna, Hiroyuki Fujiwara   +2 more
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