Wynik wyszukiwania w bazie Polska Bibliografia Lekarska GBL

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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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