Apresentação. Revista Maracanan, PPGH/UERJ, Rio de Janeiro, p. 7-9, jan.-abr. 2022.

Numerous studies have attempted to identify early physiological abnormalities in infants and toddlers who later develop autism spectrum disorder (ASD). One potential measure of early neurophysiology is the auditory brainstem response (ABR), which has been reported to exhibit prolonged latencies in children with ASD. We examined whether prolonged ABR latencies appear in infancy, before the onset...

Plau codes for the urokinase-type plasminogen activator (uPA), critical in cancer metastasis. While the mechanisms driving its overexpression in tumorigenic processes are unknown, it is regulated by the AP-1 transcriptional complex in diverse situations. The AP-1 component Fra-1 being overexpressed in aggressive breast cancers, we have addressed its role in the overexpression of Plau in the hig...

We carried out a prospective study to analyze the diagnostic potential of acoustic startle reflex (ASR), acoustic blink reflex (ABR) and electro-oculography (EOG) in early stages of atypical parkinsonian syndrome. The study was carried out in a consecutive series of 41 patients clinically diagnosed as atypical parkinsonism (mean time from first symptoms of 38 months and follow-up of 26 months)....

THE AVERAGED auditory brainstem responses are effectively utilized to determine hearing sensitivity in neonates and infants, ~, 2 and for the detection of brainstem lesions in neuro!ogic disease? In addition, they may also be used as measures of peripheral auditory pathway maturation 4,5 and to monitor the outcome of perinatal asphyxia. 6 Recently, a controversyJhas developed over the condition...

In this paper we study the performance of an explicit rate allocation algorithm for ATM networks using the available bit-rate (ABR) class of service. We examine the behavior of ABR traac with simple cell sources, and demonstrate that the allocation algorithm is fair and maintains network eeciency in a variety of network conngurations. We also study the behavior of TCP/IP sources using ABR servi...

Introduction  The tone-evoked auditory brainstem responses (tone-ABR) enable the differential diagnosis in the evaluation of children until 12 months of age, including those with external and/or middle ear malformations. The use of auditory stimuli with frequency specificity by air and bone conduction allows characterization of hearing profile. Objective  The objective of our study was to compa...

Population responses such as the auditory brainstem response (ABR) are commonly used for hearing screening, but the relationship between single-unit physiology and scalp-recorded population responses are not well understood. Computational models that integrate physiologically realistic models of single-unit auditory-nerve (AN), cochlear nucleus (CN) and inferior colliculus (IC) cells with model...

UNLABELLED Auditory Brainstem Response (ABR) is important for the early diagnosis of hearing impairment in infants. AIM To compare ABR responses in full-term and premature infants; gender and ear were taken into account. METHODS A cross-sectional prospective cohort study was carried out. We evaluated 36 full-term and 30 premature infants that had passed the Transient Otoacoustic Emissions t...