title: Optimal sample frequency in computerized rhinomanometry. Development and method.
abstract: The authors studied the pressure/flow signals generated during active anterior rhinomanometry of 25 subjects, presenting a normal transnasal breathing. By means of a Fourier transformation, the frequency content of these signals was analyzed. This investigation demonstrated clearly that signals with a frequency of more than 50 Hz no longer yield any further information about the transnasal ventilation.
authors.affiliation: Dept. of O.R.L., Academic Hospital V.U.B., Brussels, Belgium.
authors.forename: F
authors.initials: F
authors.lastname: Versnick
authors.forename: P
authors.initials: P
authors.lastname: Clement
authors.forename: M
authors.initials: M
authors.lastname: Nyssen
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008365:Manometry / Q000379:methods*; D008875:Middle Aged; D009666:Nose / Q000502:physiology*; D012129:Respiratory Function Tests; D012815:Signal Processing, Computer-Assisted