In 1946, Metz described what was probably the first practical impedance bridge for measurement of the acoustic reflex. Over the next four decades, diagnostic use of the acoustic reflex progressed in parallel with instrumentation refinements. Today, acoustic reflex threshold and decay testing are a routine component of the diagnostic audiology test battery. Recent advances in the measurement of ...

UNLABELLED The auditory sensitization, a tool used in the investigation of acoustic reflex, allows the decrease of acoustic reflex thresholds from a facilitating stimulus. It may be presented before or simultaneously with the elicitor tone. The thresholds after and before the facilitating stimulus are compared and it is expected to see the decreased threshold. From the study of the acoustic ref...

UNLABELLED It is thought that a close relationship exists between auditory processing, the acoustic reflex and speech. AIM A retrospective study to evaluate these three aspects in children with and without phonological disorders and seek any relationship among them. MATERIAL METHODS 46 children were enrolled: 24 had normal speech abilities and 22 had phonological disorders. All children und...

Background: the study of the relationship of the contralateral acoustic reflex with the auditory skill of closure. Aim: to analyze the identification of a speech signal in the presence of competitive sounds in subjects with absence of contralateral acoustic reflex. Method: application of the synthetic sentence identification (SSI) test under the conditions of competitive contralateral message (...

OBJECTIVE The present study was conducted to determine the effect of contralateral broadband noise on acoustic reflex latency (ARL). MATERIALS AND METHODS Acoustic reflex latency changes for 10 and 90% on- and off-time acoustic reflexes with contralateral broadband noise were measured in 30 adults with normal hearing. RESULTS The results of the study demonstrate that there was a latency pro...

UNLABELLED Much has been studied on the role of the acoustic reflex in the communication process. AIM To examine the responses of the contralateral acoustic reflex in children with normal hearing and phonological disorders. To investigate the relationship of the level of severity of phonological disorder. To measure the chances of it affecting all the frequencies tested. MATERIALS AND METHO...

Much has been studied on the role of the acoustic reflex in the communication process. Aim: To examine the responses of the contralateral acoustic reflex in children with normal hearing and phonological disorders. To investigate the relationship of the level of severity of phonological disorder. To measure the chances of it affecting all the frequencies tested. Materials and Methods: The study ...

This study compared pure-tone threshold data, acoustic reflex threshold data, and loudness growth data for a group of 25 hyperacusic male subjects vs. a group of 13 nonhyperacusic male subjects. Pure-tone thresholds and acoustic reflex thresholds were obtained in 5-dB steps, using revised HughsonWestlake procedures. Loudness growth functions were obtained with a fractionation (method of adjustm...

OBJECTIVE To investigate whether the human cerebellum takes part in fear conditioned potentiation of the acoustic blink reflex. METHODS A group of 10 cerebellar patients (eight patients with lesions involving the medial cerebellum, two patients with circumscribed lesions of the cerebellar hemispheres) was compared with a group of 16 age and sex matched healthy control subjects. The fear condi...

OBJECTIVE Trying to find an accurate relation between loudness discomfort level and acoustic reflex threshold. METHODS Seventy patients were involved in this study. Ten normal patients, 30 patients of unilateral conductive hearing loss and 30 patients of unilateral or bilateral, mild to moderate sensorineural hearing loss were tested by 1, 2, KH2 pure tones, 0.5, 1, 2, 4, 8 KHz narrow band no...