Auditory brainstem response (ABR) absolute thresholds were obtained from 31 ears of 28 newborns using both the insert and the earphone methods to deliver the stimuli. The two estimates on each ear were acquired in a single test session, and they differed by 10 dB or less in all cases. The results suggest that when the earphone is used, it rarely if ever collapses the ear canal to cause an artif...

BACKGROUND The analysis of the Auditory Brainstem Response (ABR) is of fundamental importance to the investigation of the auditory system behaviour, though its interpretation has a subjective nature because of the manual process employed in its study and the clinical experience required for its analysis. When analysing the ABR, clinicians are often interested in the identification of ABR signal...

Topographies of speech auditory brainstem response (speech ABR), a fine electrophysiological marker of speech encoding, have never been described. Yet, they could provide useful information to assess speech ABR generators and better characterize populations of interest (e.g., musicians, dyslexics). We present here a novel methodology of topographic speech ABR recording, using a 32-channel low s...

Cognitive deficits limit psychosocial functioning in schizophrenia. For many patients, cognitive remediation approaches have yielded encouraging results. Nevertheless, therapeutic response is variable, and outcome studies consistently identify individuals who respond minimally to these interventions. Biomarkers that can assist in identifying patients likely to benefit from particular forms of c...

Newborn hearing screening programs have gained wide acceptance as a means of identifying infants at risk for hearing loss. For the most part, the auditory brainstem response (ABR) technique has been the measurement tool universally adopted in the evaluation of high-risk infants. Over the years, the ABR has been used successfully with a negligible false-negative rate. Unfortunately, program foll...

We recorded the auditory brainstem response (ABR) in four dolphins (Tursiops truncatus and Delphinus delphis). The ABR evoked by clicks consists of seven waves within 10 msec; two waves often contain dual peaks. The main waves can be identified with those of humans and laboratory mammals; in spite of a much longer path, the latencies of the peaks are almost identical to those of the rat. The do...

Techniques used to monitor the function of the seventh and eighth cranial nerves during acoustic neuroma and other posterior fossa surgery are reviewed. The auditory brainstem response (ABR), electrocochleogram (ECochG) and direct recording from the auditory nerve (CNAP) were compared. The best technique is the ECochG, although in many cases, the CNAP should be used as a back-up technique. The ...