OBJECTIVE As the need for objective measures with cochlear implant users increases, it is critical to understand how electrical potentials behave when stimulus parameters are systematically varied. The purpose of this study was to record and evaluate the effects of implanted electrode site and stimulus current level on latency, amplitude, and threshold measures of electrically evoked auditory p...

Brainstem auditory evoked response (BAER) is a reliable test for neonatal auditory and neurological dysfunction and it permits early diagnosis and rehabilitation. The purpose of this study is to demonstrate latencies of BAER in normal term neonates in order to obtain reference values in a university hospital. BAER was performed in the second day of life in 47 normal newborns (25 male, 22 female...

OBJECTIVE The speech-evoked auditory brainstem response (ABR) provides an objective measure of subcortical encoding of complex acoustic features. However, the intrasubject reliability of this response in both optimal and challenging listening conditions has not yet been systematically documented. This study aimed to evaluate test-retest reliability of the speech-evoked ABR in young adults. ME...

During our study of recording auditory evoked potentials in protein-calorie malnutrition in infants and young children (1), we came across a few cases of anaemia. The heamatological investigationsincluding haemogram, showed that, of the five cases, two had megaloblastic anaemia, two had microcytic hypochromic and one had severe aplastic anaemia. Such neurological complications of various types ...

introduction: hearing is essential for humans to communicate with one another. early diagnosis of hearing loss and intervention in neonates and infants can reduce developmental problems. the aim of the present study was to assess the prevalence of hearing impairment in newborns admitted to a neonatal intensive care unit (nicu) and analyze the associated risk factors.   materials and methods: th...

abstract introduction: omega 3 fatty acid especially in the form of fish oil, has structural and biological role in the body's various systems especially nervous system. numerous studies have tried to research about it. auditory is one of the affected systems. omega 3 deficiency can have devastating effects on the nervous system and auditory. this study aimed to evaluate neural conduction ...

Under adequate stimulus intensities, the power spectra of normal auditory evoked brainstem responses (ABR) are mainly composed of three major parts, i.e. component A (0 approximately 350Hz), B (350-700Hz). and C (700-1200Hz). By means of digital filter using fast Fourier transform, three derived ABR waveforms consist of each component of the power spectrum were obtained and named component wave...

The aim of the present study was to investigate the effect of stimulus polarity on speech evoked auditory brainstem response (ABR). In order to accomplish it, speech evoked ABR was recorded with various stimulus polarities from 17 normally hearing adults. The result of the study shows differential effect of stimulus polarity on components of speech evoked ABR. Latency of peaks for onset, sustai...

OBJECTIVE To determine the brainstem auditory evoked response (BAER) abnormalities and their reversibility in neonates with birth asphyxia. DESIGN Prospective case control study. SETTING Tertiary care teaching hospital. METHODS 30 term Neonates with 5-min Apgar < 6 and hypoxic ischemic encephalopathy (HIE) underwent BAER testing with follow up at 3 months. An equal number of normal term n...