This study investigates the acoustic reflex threshold (ART) dependency on stimulus phase utilizing low-level reflex audiometry [Neumann et al., Audiol. Neuro-Otol. 1, 359-369 (1996)]. The goal is to obtain optimal broadband stimuli for elicitation of the acoustic reflex and to obtain objective determinations of cochlear hearing loss. Three types of tone complexes with different phase characteri...

The vestibular nervous system senses linear and angular acceleration upon the head during postural change generates nerve activity changes. autonomic regulates involuntary physiologic processes throughout peripheral central systems. systems interplay several brain regions to maintain homeostasis changes, called vestibulo-autonomic reflex. In this review, we first contemplated anatomic propertie...

Background and Objective: Early detection of neonatal hearing disorders is a suitable measure of speech and behavioral development. The aim of this study was to determine the prevalence of hearing disorder in high-risk neonates treated in a neonatal intensive care unit (NICU).  Materials and Methods: This descriptive study was performed on 150 neonates treated in the NICU of Besat Hospital in ...

Long-term physical restriction may lead to affective and physiological disorders in sows; pupillary light reflex (PLR) characteristics might be a good indicator diagnose these symptoms. Accordin...

UNLABELLED Hearing loss is more prevalent than other disorders found at birth. Efforts have been put up towards the early identification and treatment of hearing loss by means of neonatal hearing screening programs. AIM prospective study with the goal of characterizing the process of implementing a Neonatal Auditory Screening Program (NASP) at a University Hospital. To analyze hearing loss di...

In this thesis different acoustical and electrophysiological approaches for the objective audiological diagnostic are investigated. The utilized methods involve higher stages of the audiometric pathway and therefore allow the assessment of the state of hearing up to neural levels. It was shown that a different method to measure the acoustic reflex elicitation in conjunction with a new robust de...

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...