H. Yoshida et al., TIME-VARYING PROPERTIES OF RESPIRATORY FLUCTUATIONS IN PUPIL DIAMETEROF HUMAN EYES, Methods of information in medicine, 33(1), 1994, pp. 46-48
Citations number
3
Categorie Soggetti
Medicine Miscellaneus","Computer Science Information Systems
The time varying properties have been investigated of respiratory comp
onents in fluctuations of the pupil diameter (PDF) of the human eye. P
DF and instantaneous lung volume were simultaneously measured for 45 m
inutes under natural binocular viewing conditions. The short-term Four
ier transform and the autoregressive signal modeling together with the
recursive least squares algorithm have been applied for the estimatio
n of nonstationary power spectra. Data analysis showed a bursting type
non-stationarity in the appearance of the respiratory component in PD
F.