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Titolo:
An acoustically evoked short latency negative response in profound hearingloss patients
Autore:
Nong, DX; Ura, M; Owa, T; Noda, Y;
Indirizzi:
Univ Ryukyus, Fac Med, Dept Otorhinolaryngol, Nishihara, Okinawa 9030215, Japan Univ Ryukyus Nishihara Okinawa Japan 9030215 hara, Okinawa 9030215, Japan
Titolo Testata:
ACTA OTO-LARYNGOLOGICA
fascicolo: 8, volume: 120, anno: 2000,
pagine: 960 - 966
SICI:
0001-6489(200010)120:8<960:AAESLN>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
GUINEA-PIG; VESTIBULAR NUCLEUS; BRAIN-STEM; POTENTIALS; NEURONS; SOUND; DESTRUCTION; HUMANS; CLICKS;
Keywords:
auditory brainstem response; intense sound stimuli; profound hearing loss; saccule; short latency; vertex negative response;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Nong, DX Univ Ryukyus, Fac Med, Dept Otorhinolaryngol, 207 Uehara, Nishihara, Okinawa 9030215, Japan Univ Ryukyus 207 Uehara Nishihara Okinawa Japan 9030215 15, Japan
Citazione:
D.X. Nong et al., "An acoustically evoked short latency negative response in profound hearingloss patients", ACT OTO-LAR, 120(8), 2000, pp. 960-966

Abstract

In our auditory brainstem response (ABR) tests, a peculiar V-shaped negative wave at around 3-4 ms latency was observed. At present. this acoustically evoked short latency negative response (ASNR) is poorly understood. In order to study its appearance and origin, the ABR data of 3104 tests during 1980-98 were reviewed. The ASNR was found only in profound hearing loss earsunder intense stimuli (80-120 dB nHL). Out of the total 653 profound hearing loss patients (981 ears), the click-evoked ASNRs were present in 80 patients (12.3%), 117 ears (11.9%). The age range was from 8 months to 70 years. Demographic outcome revealed significant higher appearance rates in youngsubjects especially in the 20-30 years group. The ASNR was excluded from an artifact by its reproducibility over time, equipment and institutes. Moreover, it became absent after external auditory canal occlusion, which simply blocked the air conduction without any influence upon scalp potentials orequipment. It had neural response characteristics that the latency and amplitude shortened and increased respectively in response to the increase of stimulus intensity. Because the peculiar V-shaped waveform obviously differs from ABR, the ASNR was not interpreted as a potential generated from the conventional auditory pathway. On the other hand, the ASNR individuals wereof good vestibular function in sharp contrast with their poor hearing. This suggests the probable relation between the ASNR and the vestibular system. The saccule and vestibular nucleus are hypothesized to be the sense organand the origin of the response respectively.

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Documento generato il 27/01/21 alle ore 01:25:37