OBJECTIVE 1) To examine the distribution of behavioral hearing thresholds in a group of children who had shown no click-evoked auditory brain stem response (ABR) at maximum presentation levels. 2) To describe the relationship between the 90 Hz steady-state evoked potential (SSEP) and behavioral thresholds in these subjects. DESIGN A retrospective study based on clinical findings obtained from...

OBJECTIVE To describe a group of children exhibiting electrophysiologic responses characteristic of auditory neuropathy (AN) who were subsequently identified as having absent or small cochlear nerves (i.e., cochlear nerve deficiency). DESIGN A retrospective review of the clinical records, audiological testing results, and magnetic resonance imaging (MRI) studies. Fifty-one of 65 children with...

INTRODUCTION Cervical vestibular evoked myogenic potentials (cVEMP) can assess the integrity of the inferior vestibular nerve thereby promising to be a useful tool in the audiological test battery to diagnose vestibular schwannoma. OBJECTIVE To ascertain the utility of cVEMP in diagnosis of vestibular schwannoma in conjunction with the ABR and to evaluate whether the size of lesion has any ef...

ABR was performed on 42 preterm infants undergoing assisted ventilation with conventional or high-frequency oscillatory ventilation (HFOV). ABRs from these very young neonates were evaluated to further detail the emerging response and to determine if type of ventilation or other perinatal factors had effects on the ABR. While responses were present down to 26 weeks gestational age, the only fac...

Results: At one week post insertion of antibiotic laden pellets marked ABR threshold elevation (15–40 dB) was observed (P< 0.002–0.0001) against control groups. Persistent significant elevation (25–40 dB) was apparent at 8 and 30 kHz at week 16 with some partial mid frequency recovery. No significant changes in ABR wave amplitudes and latencies were seen. Representative cytocochleograms did not...

The mechanisms by which blood pressure is maintained against the orthostatic stress caused by gravity's effect on the fluid distribution within the body are important issues in physiology, especially in humans who usually adopt an upright posture. Peripheral vasoconstriction and increased heart rate (HR) are major cardiovascular adjustments to orthostatic stress and comprise part of the reflex ...

The present study provides comparative evaluation of the ABR and MLR to 1 kHz brief tones in two groups of hearing-impaired subjects (noise-masked normally-hearing; and sensorineurally hearing-impaired adults), as well as a normally-hearing control group. Tones were presented at intensities from threshold to 80 /90 dB nHL. The results of this study show that: (1) the ABR and MLR to these low-fr...

BACKGROUND A common complaint of patients with (central) auditory processing disorder is difficulty understanding speech in noise. Because binaural hearing improves speech understanding in compromised listening situations, quantifying this ability in different levels of noise may yield a measure with high clinical utility. PURPOSE To examine binaural enhancement (BE) and binaural interaction ...

AIM OF STUDY This study investigated the consistency in Auditory Brainstem Response (ABR) waveform evaluations between two audiologists (inter-audiologist agreement) and within each of the audiologist (intra-audiologist agreement). METHODS Two audiologists from one of the audiology clinics in Kuantan, Pahang, Malaysia were involved in this study. Both audiologists were required to identify an...