Wynik wyszukiwania w bazie Polska Bibliografia Lekarska GBL
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SMURZYŃSKI
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Tytuł oryginału:
Influence of contralateral stimulation by two-tone complexes, narrow-band and broad-band noise signals on the 2f1-f2 distortion product otoacoustic emission levels in humans.
Autorzy:
Lisowska
Grażyna,
Smurzyński
Jacek,
Morawski
Krzysztof,
Namysłowski
Grzegorz,
Probst
Rudolf
Źródło:
Acta Otolaryngol. 2002: 122 (6) s.613-619, il., tab., bibliogr. 25 poz.
Sygnatura GBL:
300,481
Hasła klasyfikacyjne GBL:
pediatria
otorynolaryngologia
Typ dokumentu:
praca doświadczalna
praca opublikowana za granicą
tytuł obcojęzyczny
Wskaźnik treści:
ludzie
dzieci 13-18 r.ż.
dorośli 19-44 r.ż.
płeć męska
płeć żeńska
Streszczenie angielskie:
In order to test the frequency specificity of the efferent suppressive effect on otoacoustic emissions, changes in the 2f1-f2 distortion product otoacoustic emission (DPOAE) levels induced by contralateral stimuli of different spectra were measured in 10 normally hearing adults. Three types of contralateral stimuli were used: (I) a set of 6 pairs of pure tones with the same frequencies as used for DPOAE stimulation; (II) 6 narrow-band noise signals with cut-off frequencies equal to the frequencies of the primary tones used for DPOAE stimulation; and (III) broad-band noise with a bandwidth of 840-6,000 Hz. A small suppressive effect was observed mainly in the mid-frequency region. Broad-band noise was more effective at suppressing DPOAEs than narrow-band noises and two-tone complexes. Occasionally, small enhancements in DPOAE amplitudes were observed. Based on the results of this study, it is concluded that DPOAE changes induced by contralateral stimuli are not frequency-specific, and are too small to have routine clinical value.
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