Results 361 to 370 of about 2,960,765 (409)
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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 ...
David W. Carley +4 more
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Stimulated emission of phonons in an acoustical cavity [PDF]
Physical Review B, 1997 Stimulated emission is studied of phonons resonant with the metastable Zeeman-split Ē(2E) doublet in ruby. Initial population inversion of this two-level system is prepared by selective pulsed optical pumping, and the ensuing stimulated emission of resonant phonons is observed via an accelerated growth of the luminescence intensity emanating from the ...
Jaap I. Dijkhuis +2 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. Spoendlin, H. Rauchegger
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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
James F. Greenleaf, Mostafa Fatemi
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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.
A.E. Bunn, R.W. Guelke
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Otology and Neurotology, 2018
OBJECTIVE This study reviewed outcomes of hearing preservation (HP) surgery depending on the angle of insertion (AOI) in a cochlear implant (CI) patient population who used electric stimulation (ES) or combined electric-acoustic stimulation (EAS ...
S. Helbig +5 more
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OBJECTIVE This study reviewed outcomes of hearing preservation (HP) surgery depending on the angle of insertion (AOI) in a cochlear implant (CI) patient population who used electric stimulation (ES) or combined electric-acoustic stimulation (EAS ...
S. Helbig +5 more
semanticscholar +1 more source
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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Near Wellbore Stimulation by Acoustic Waves
SPE European Formation Damage Conference, 2003Abstract Reduced well productivity or injectivity is often caused by near-wellbore formation damage due to the interaction of reservoir formation with drilling and completion fluids. The problem can be further compounded by production induced formation damage.
Sau-Wai Wong +3 more
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On acoustic stimulation of atmospheric precipitation
Technical Physics, 2005Stimulation of atmospheric precipitation by acoustic waves is considered. The interaction of acoustic waves with fog particles and the acoustic coagulation phenomenon are analyzed. It is proposed that the effect of amplification of sound in a weakly ionized gas be used to prevent sound decay away from the source in a foggy environment.
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Stimulator for Complex Acoustic Waveforms
The Journal of the Acoustical Society of America, 1964An audio-tone-burst stimulator has been designed that employs a Hall-effect multiplier. This instrument produces modulation of the audio tone(s) by the desired envelope signal. An envelope-waveform generator is used that can deliver to the modulator a choice of either a Gaussian pulse, a triangle, trapezoid, or trapezoidal pulse with Gaussian leading ...
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