[The propagation pathways of an excitatory stimulus to the receptor apparatus during the initiation of auditory sensations using amplitude-modulated focused ultrasound].
Studies have been made on thresholds of perception of amplitude-modulated focused ultrasound (AMFU) during modulation by 125-8,000 Hz in 6 healthy subjects, 100 patients with otosclerosis before and after operation, and 13 subjects with other disturbances in hearing. Perception thresholds for AMFU were compared with bone and air audiograms in the same subjects. Changes in the thresholds for AMFU after operation were of the same pattern as those in the thresholds for air audiometry, indicating mainly aerial pathway of signal transmission for AMFU. Perception of AMFU in otosclerotic patients is characterized by "gaps"--a new index which allows to use AMFU for differential diagnostics of otosclerosis in the clinic.
Shatilov
M S
MS
D000161:Acoustic Stimulation / Q000379:methods; D001299:Audiometry; D001307:Auditory Perception / Q000502:physiology*; D001309:Auditory Threshold / Q000502:physiology; D001844:Bone Conduction / Q000502:physiology; D003937:Diagnosis, Differential; D006801:Humans; D010040:Otosclerosis / Q000175:diagnosis / Q000503:physiopathology / Q000523:psychology / Q000601:surgery; D011603:Psychophysiology; D011984:Sensory Receptor Cells / Q000502:physiology*; D014465:Ultrasonics
Puti provedeniia razdrazhaiushchego stimula k retseptornomu apparatu pri initsiatsii slukhovykh oshchushcheniĭ s pomoshch'iu amplitudno-modulirovannogo fokusirovannogo ul'trazvuka.