[Indices of fast acoustic adaptation in unilateral recording of short latent acoustic potentials in people with normal hearing and chronic functional voice disturbances].
The authors presented the results of the study of the central parts of the acoustic analyzer using the method of recording the short latent acoustic evoked potentials (SAEP), with stimulus frequency of 21.1 and 90 Hz, in the persons suffered from chronic functional voice disturbances (CFVD). A total of 67 persons aged from 23 to 45 years with normal hearing function were examined; among them, the normal voice forming and the acoustic apparatus were found in 38, and CFVD was detected in 29 persons. The state of the central parts of the acoustic analyzer examined by using a method of fast acoustic adaptation (FAA) during recording the SAEP points to the interrelation between the acoustic and vocal systems on the level of brainstem. It should be mentioned that investigating the brainstem responses to auditory stimuli, especially of different frequency, is helpful to reveal the preclinical disturbances in the functional state of the central nervous system, and brainstem structures of the acoustic analyzer, in particular. So, it contributes to early diagnosis of these affections in the persons with voice and hearing pathology. The study of the central mechanisms of the interrelations between the acoustic and voice forming systems contributes to new progressive achievements in phonoaudiology and elaboration of new approaches in diagnosis and treating the voice and acoustic disturbances, which remain one of the burning problems in present otorhinolaryngology.
Shydlovs'ka
T A
TA
Research Institute of Otolaryngology, Ministry of Health of Ukraine, Kiev.
Ovsianyk
K V
KV
D000161:Acoustic Stimulation; D000222:Adaptation, Physiological / Q000502:physiology*; D000328:Adult; D001300:Audiometry, Evoked Response; D001307:Auditory Perception / Q000502:physiology*; D016057:Evoked Potentials, Auditory, Brain Stem / Q000502:physiology*; D006801:Humans; D014832:Voice Disorders / Q000503:physiopathology*