Evaluation of the brain-stem function by the auditory brain-stem response and the caloric vestibular reaction in comatose patient

1983 ◽  
Vol 238 (1) ◽  
pp. 33-43 ◽  
Author(s):  
Toshiaki Yagi ◽  
Shunkichi Baba
Keyword(s):  
Brain Stem ◽  
Comatose Patient ◽  
Auditory Brain Stem Response ◽  
Auditory Brain Stem ◽  
The Brain ◽  
Brain Stem Response

Auditory Brain Stem Response Abnormalities in Patients with Bell's Palsy

1983 ◽  
Vol 91 (4) ◽  
pp. 412-416 ◽  
Author(s):  
Ulf Rosenhall ◽  
Staffan Edström ◽  
Per Hanner ◽  
Gaby Badr ◽  
Anders Vahlne
Keyword(s):  
Brain Stem ◽  
Herpes Simplex Virus Infection ◽  
Bell’S Palsy ◽  
Bell's Palsy ◽  
Cns Involvement ◽  
Auditory Brain Stem Response ◽  
Auditory Brain Stem ◽  
Simplex Virus ◽  
The Brain ◽  
Brain Stem Response

To evaluate the hypothesis of CNS involvement in Bell's palsy, the auditory brain stem responses (ABR) of 31 patients were studied. In nine of these patients ABR abnormalities were found. None of these patients showed evidence of dysfunction of the cochlear nerve. Six of the patients who had abnormal ABR were retested after they recovered from the facial paresis. Five of these patients showed persistent ABR abnormality, and one showed a normalization of the ABR. These results may be consistent with an injury at the brain stem level in some patients with Bell's palsy. The possible causative agent of a reactivation of a herpes simplex virus infection is discussed.

scholarly journals Within-Subject Analysis of Auditory Brain Stem Responses in Adults With Unilateral Tinnitus

2019 ◽  
pp. 014556131989384
Author(s):  
Pey-Yu Chen ◽  
Tien-Chen Liu
Keyword(s):  
Brain Stem ◽  
Amplitude Ratio ◽  
Contemporary Theory ◽  
Auditory Brain Stem Response ◽  
P Values ◽  
Subject Analysis ◽  
Auditory Brain Stem ◽  
Peripheral Auditory System ◽  
The Brain ◽  
Brain Stem Response

Tinnitus affects about 10% of population worldwide. Most patients present with some degrees of hearing impairment, while others remain normal. The aim of this study was to analyze the latency and amplitude of auditory brain stem response (ABR) waveforms in patients with unilateral tinnitus. The tinnitus ears and non-tinnitus ears were compared for each patient. Sixty-seven patients with single-sided tinnitus were enrolled, including 26 male and 41 female patients with a mean age of 54.4 (age ranged from 22 to 79). Eighteen patients had bilateral normal hearing, while 49 patients had some degree of sensorineural hearing. The ABR waveforms were retrospectively analyzed in terms of waves I, III, and V absolute latency, as well as waves I-III, waves II-V, and waves I-V latency intervals, amplitude, and amplitude ratio (III/I, V/I). Statistical analyses were performed within patients. There was no significant ABR difference between the tinnitus and non-tinnitus ears with regard to all the wave latencies and amplitudes in our patients (all P values >0.1). Our result that ABR changes were not found between tinnitus and non-tinnitus ears implies that tinnitus does not simply originate from the defect of the peripheral auditory system. It conforms to the contemporary theory that a higher level of the brain is involved in the generation of tinnitus.

Evaluation of Vertigo by Auditory Brain Stem Response

2002 ◽  
Vol 111 (8) ◽  
pp. 730-735 ◽  
Author(s):  
Louis W. Welsh ◽  
John J. Welsh ◽  
Laurie G. Rosen
Keyword(s):  
Magnetic Resonance ◽  
Brain Stem ◽  
Vestibular System ◽  
Normal Hearing ◽  
Magnetic Resonance Images ◽  
Auditory Brain Stem Response ◽  
Electrophysiological Tests ◽  
Auditory Brain Stem ◽  
The Brain ◽  
Brain Stem Response

The authors examined the hypothesis that abnormal patterns of the auditory brain stem response (ABR) could supplement the neuro-otological evaluation and assist in localizing the site of vestibulocerebellar dysfunction. This project is based upon the fact that the sources of waves I through V have been regionally identified. Absent or delayed patterns can be referenced to the normal data, and the site of a lesion generating vertigo can be established. We found absence of waves or prolonged interpeak latencies in 25% of the vertiginous subjects with normal hearing and magnetic resonance images of the brain. We conclude that in selected cases, lesions affecting the vestibular system can influence the ABR, and the electrophysiological tests of audition may suggest regionalization of the dysfunction in the hindbrain and midbrain.

scholarly journals Can auditory brain stem response accurately reflect the cochlear function?

2020 ◽  
Vol 124 (6) ◽  
pp. 1667-1675
Author(s):  
Dalian Ding ◽  
Jianhui Zhang ◽  
Wenjuan Li ◽  
Dong Li ◽  
Jintao Yu ◽  
...  
Keyword(s):  
Brain Stem ◽  
Damage Model ◽  
Compound Action Potential ◽  
Cochlear Function ◽  
Auditory Brain Stem Response ◽  
Threshold Difference ◽  
Auditory Brain Stem ◽  
Cochlear Damage ◽  
Brain Stem Response ◽  
Compound Action

Auditory brain stem response (ABR) is more commonly used to evaluate cochlear lesions than cochlear compound action potential (CAP). In a noise-induced cochlear damage model, we found that the reduced CAP and enhanced ABR caused the threshold difference. In a unilateral cochlear destruction model, a shadow curve of the ABR from the contralateral healthy ear masked the hearing loss in the destroyed ear.

Improving the Frequency Specificity of the Auditory Brain Stem Response

1992 ◽  
Vol 13 (4) ◽  
pp. 223-227 ◽  
Author(s):  
Therese C. Robier ◽  
David A. Fabry ◽  
Marjorie R. Leek ◽  
W. Van Summers
Keyword(s):  
Brain Stem ◽  
Auditory Brain Stem Response ◽  
Frequency Specificity ◽  
Auditory Brain Stem ◽  
Brain Stem Response
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