Continuous monitoring of brainstem auditory evoked potentials (BAEPs) was carried out in 57 comatose patients for periods ranging from 5 hours to 13 days. In 53 cases intracranial pressure (ICP) was also simultaneously monitored. The study of relative changes of evoked potentials over time proved more relevant to prognosis than the mere consideration of "statistical normality" of waveforms; thu...

BACKGROUND Brainstem auditory-evoked responses (BAEP) have been reported to be unchanged in the presence of drugs used for induction and maintenance of general anesthesia. The aim of this study was to investigate if the signal segments after the auditory stimulus that are used to average the evoked response change under the influence of general anesthesia. METHODS BAEPs of 156 patients schedu...

Behcet's disease, a multisystemic vascular inflammatory disorder of unknown origin, is relatively rare and central nervous system involvement is seen in 5% of affected individuals. This form of the disease, called as neurobehcet's disease (NB), can be misdiagnosed as multiple sclerosis (MS), a demyelinating disorder of central nervous system, so their differential diagnosis is important. In thi...

OBJECTIVES Somatosensory evoked potentials (SSEPs) and brainstem auditory evoked potentials (BAEPs) have been increasingly utilised during surgery for intracranial aneurysms to identify cerebral ischaemia. Between July 1994 and April 1996, we surgically treated 70 aneurysms in 49 consecutive patients (58 operations) with the aid of intraoperative evoked potential monitoring. This study sought t...

BACKGROUND/AIM Vitiligo is a common depigmenting disorder. The damage can also occur in similar ways to melanocytes within other organs. We evaluated the brainstem and auditory pathway functions by evaluating brainstem auditory evoked potentials (BAEPs) and whether there is any relationship between auditory functions and autoimmunity. MATERIALS AND METHODS Forty patients with vitiligo and 20 ...

Brainstem auditory evoked potentials (BAEPs) were recorded in 10 patients who had basilar artery occlusions. Five patients had abnormal BAEPs during the initial recording. Among the remaining patients, three who underwent follow-up study revealed an abnormality within eight days after the onset. An abnormal CT scan preceded the abnormal BAEPs in seven patients. There were five deaths within sev...

CONTEXT AND OBJECTIVE Children and adolescents who live in situations of social vulnerability present a series of health problems. Nonetheless, affirmations that sensory and cognitive abnormalities are present are a matter of controversy. The aim of this study was to investigate aspects to auditory processing, through applying the brainstem auditory evoked potential (BAEP) and behavioral audito...

Magnetoencephalography (MEG) is generally dealing with cortical sources, since the sensitivity of MEG declines rapidly with increasing source depth. Two factors are responsible for this loss of sensitivity. First, the amplitude of the measured MEG is inversely proportional to the squared distance between sensors and source, and this distance naturally increases with source depth. Second, the ME...