Subject(s)
Meniere Disease/diagnosis , Adult , Aged , Diagnostic Techniques, Otological , Female , Humans , Male , Middle Aged , Severity of Illness Index , Vestibule, Labyrinth , Young AdultABSTRACT
Thirty patients with temporo-mandibular joint dysfunction were selected to investigate the changes in otoacoustic emissions before and after conservative treatment of their temporo-mandibular joints. Pure tone audiometry, transient-evoked otoacoustic emissions (TEOAE), distortion-product otoacoustic emissions (DPOAE) as well as a tinnitus questionnaire were administered to all patients before and after therapy. Therapy was conservative in the form of counselling, physiotherapy, anti-inflammatory agents, muscle relaxants, and occlusal splints. Results indicated insignificant changes in the TEOAEs, whereas there were significant increases in distortion product levels at most of the frequency bands. These results were paralleled to subjective improvement of tinnitus.
Subject(s)
Cochlea/physiopathology , Earache/etiology , Temporomandibular Joint Disorders/complications , Temporomandibular Joint Disorders/therapy , Tinnitus/etiology , Adolescent , Adult , Anti-Inflammatory Agents/therapeutic use , Audiometry, Pure-Tone , Child , Cochlea/physiology , Counseling/methods , Female , Humans , Male , Neuromuscular Agents/therapeutic use , Occlusal Splints , Otoacoustic Emissions, Spontaneous , Surveys and Questionnaires , Temporomandibular Joint Disorders/physiopathology , Treatment OutcomeABSTRACT
We measured the interaural attenuation for click stimuli using insert earphones. Electrocochleographic thresholds were determined when clicks were presented both ipsilaterally and contralaterally to the recording ear. The interaural attenuation was calculated as the difference between ipsilateral and contralateral thresholds. Results from normal listeners showed that crossover occurred. Results agree with previous investigators who used a different approach. Results confirm that one may need to mask the nontest ear in clinical evoked potential testing even though insert earphones are used. Several approaches to the question of when to mask are proposed.
Subject(s)
Amplifiers, Electronic/statistics & numerical data , Audiometry, Evoked Response/statistics & numerical data , Hearing/physiology , Acoustic Stimulation , Adult , Audiometry , Auditory Threshold , Ear Canal , Evoked Potentials, Auditory, Brain Stem , Female , Humans , Male , Middle Aged , Perceptual MaskingABSTRACT
An estimate of the traveling wave velocity (TWV) was evaluated in 18 young adults to determine the technique's applicability as a possible tool in evaluating Meniere's disease. This TWV estimation uses a derived auditory brain stem response procedure requiring high-intensity masking. The results indicate that on average, TWVs were similar to those obtained via psychophysical measures or electrocochleography. However, instances of undermasking, due to subjects' intolerance, resulted in a number of subjects exhibiting faster than expected TWVs.
