Results 301 to 310 of about 110,918 (349)
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An evaluation of antenatal fetal acoustic stimulation
European Journal of Obstetrics & Gynecology and Reproductive Biology, 1991Fetal heart rate reactivity was evaluated following acoustic stimulation testing (AST). The AST and NST (non-stress test) were compared with regards to certain adverse perinatal outcome criteria, and in a selected sample of cases, to other surveillance tests. These tests were the oxytocin challenge test (OCT) and biophysical profile (BPP).
D B, Schwartz +5 more
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Spinal motor responses to acoustic stimulation
Experimental Neurology, 1964Abstract Certain aspects of the mechanisms mediating auditory-induced spinal motor activity have been examined by recording within the brain stem and from spinal motoneurons at both cervicothoracic and lumbosacral levels. Single auditory click stimulation elicits, in lightly strychninized cats, motor responses appearing along both sides of the spinal
B E, GERNANDT, H W, ADES
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Respiratory and Arousal Responses to Acoustic Stimulation
Chest, 1997Although sleep-related obstructive apnea is most often associated with transient arousal, the impact of this arousal on respiratory control remains unclear. We tested the hypotheses that acoustic arousing stimulation can generate a significant respiratory response during sleep in healthy subjects and that the magnitude or timing of this response is ...
D W, Carley +4 more
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Damage of the basilar membrane by acoustic stimulation
Archives of Oto-Rhino-Laryngology, 1981Sound exposures of more than 130 dB lead to typical tears in the basilar membrane in the area of maximal damage. The position, size, and number of these tears are evaluated.
H, Rauchegger, H, Spoendlin
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A mechanism for stimulated acoustic emissions in the cochlea
Hearing Research, 1985Stimulated acoustic emissions in the cochlea are explained in terms of its hydraulic properties. The mathematical model predicts that these 'echoes' are caused by reflections which result from a discontinuity in the resistive and reactive components of the impedance which occurs at resonance.
R W, Guelke, A E, Bunn
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Ultrasound-Stimulated Vibro-Acoustic Spectrography
Science, 1998An ultrasound method based on radiation force is presented for imaging the acoustic response of a material to mechanical excitation. Acoustic energy was emitted from solids and tissues in response to an oscillatory radiation force produced by interfering focused beams of ultrasound. Frequency spectra of ultrasound-stimulated acoustic emission exhibited
M, Fatemi, J F, Greenleaf
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Properties of the generator of stimulated acoustic emissions
Hearing Research, 1980In Part I, the sound emitting properties of the peripheral auditory system are briefly reviewed and links with other literature are cited. (Summary of Symposium section introduction). In Part II, the stimulation of acoustic emissions by clicks is examined experimentally and analytically, in order to specify the physical qualities and parameters of the ...
D T, Kemp, R, Chum
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Relations Among Aftereffects of Acoustic Stimulation
The Journal of the Acoustical Society of America, 1967In Expt. 1, six women were given 12 separate tests of short-duration auditory adaptation. Correlations among subjects showed that two subgroups existed, one pair differing from the others in exhibiting an interaction between stimulus strength/duration and slope of recovery.
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Obstetrics and gynecology clinics of North America, 1989
The nonstress test is the most widely employed method of fetal health assessment. The current approach is to use the OCT or biophysical profile as a means of identifying the fetus at very high risk should the nonstress test be either nonreassuring or equivocal.
K A, Kuhlman, R, Depp
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The nonstress test is the most widely employed method of fetal health assessment. The current approach is to use the OCT or biophysical profile as a means of identifying the fetus at very high risk should the nonstress test be either nonreassuring or equivocal.
K A, Kuhlman, R, Depp
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A tone pulse generator for acoustic stimulation
Medical & Biological Engineering, 1969A tone pulse generator is described, primarily intended for use as the stimulus source for Evoked Response Audiometry. The most interesting features are the electronic switch, using field-effect-transistors, and the triggering circuits with a random period mode incorporated.
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