Human summating potential to tone bursts: observations on tympanic membrane versus promontory recordings in the same patients.
J Am Acad Audiol
; 5(1): 24-9, 1994 Jan.
Article
em En
| MEDLINE
| ID: mdl-8155891
ABSTRACT
Electrocochleographic responses to tone bursts and clicks were recorded from the tympanic membranes (TMs) and promontories of six suspected Meniere's patients. Although the majority of ears had normal summating potentials (SPs), regardless of recording site and stimulus type, some displayed amplitude-enlarged SPs at both sites and to both types of stimuli. The following observations were made from these patients regarding the choice of recording approaches and stimuli for ECochG (1) Although SP amplitudes at the promontory were approximately four times larger than corresponding TM values, response "patterns" leading to diagnostic interpretation were the same at both sites; (2) the majority of patients who displayed enlarged SP amplitudes to tone bursts also had enlarged SPs to clicks; and (3) with tone-burst stimuli, the amplitude of the SP alone was sufficient for diagnostic interpretation of the ECochG waveform.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Membrana Timpânica
/
Orelha Média
/
Potenciais da Membrana
Limite:
Humans
Idioma:
En
Revista:
J Am Acad Audiol
Assunto da revista:
AUDIOLOGIA
Ano de publicação:
1994
Tipo de documento:
Article
País de publicação:
EEUU
/
ESTADOS UNIDOS
/
ESTADOS UNIDOS DA AMERICA
/
EUA
/
UNITED STATES
/
UNITED STATES OF AMERICA
/
US
/
USA