Testing time comparison between two procedures with new technologies of Automated Auditory Brainstem Response (AABR).

Purpose: To compare the testing time of two Automated Auditory Brainstem Response (AABR) procedures using different repetition rates and detection modes.

Methods: A hearing screening using AABR was performed in 30 newborns with mean age of 21 days. Each newborn was submitted to two hearing screening procedures using different AABR equipments (Procedure 1 and Procedure 2).

Comparing auditory brainstem responses (ABRs) to toneburst and narrow band CE-chirp in young infants.

Objective: The difference of characteristics (latency and amplitude) between toneburst and narrow CE-chirp stimuli on ABR recording was analyzed in normal hearing infants.

Methods: 500, 1000, 2000 and 4000 Hz toneburst and narrow band CE-chirp auditory brainstem responses (ABRs) were recorded in 40 normal-hearing infants. The amplitude and latency parameters of the ABR were collected for each of the four stimulus levels: 80, 60, 40, and 20 dB nHL.

Auditory and communicative abilities in the auditory neuropathy spectrum disorder and mutation in the Otoferlin gene: clinical cases study.

This study had the aim to investigate the auditory and communicative abilities of children diagnosed with Auditory Neuropathy Spectrum Disorder due to mutation in the Otoferlin gene. It is a descriptive and qualitative study in which two siblings with this diagnosis were assessed. The procedures conducted were: speech perception tests for children with profound hearing loss, and assessment of communication abilities using the Behavioral Observation Protocol.

Threshold prediction in children with sensorioneural hearing loss using the auditory steady-state responses and tone-evoked auditory brain stem response.

Objective: The purpose of this study was to compare ASSRs to tone-evoked ABR and to behavioral thresholds obtained on follow-up audiometry at 500, 1000, 2000, and 4000 Hz in infants and young children.

Methods: The study included 17 infants and young children ages between 2 months and 3 years old, with sensorineural hearing loss. The ASSRs thresholds were compared with the tone-evoked ABR thresholds, and with the behavioral thresholds obtained on follow-up audiometry.

Tympanometry in neonates with normal otoacoustic emissions: measurements and interpretation.

Unlabelled: Tympanometry is used in evaluating middle ear functional conditions. Before six months of age its results may be misleading. High frequency studies aim to provide more valid procedures.