TIME-VARYING PROPERTIES OF RESPIRATORY FLUCTUATIONS IN PUPIL DIAMETEROF HUMAN EYES

Authors
YOSHIDA H YANA K OKUYAMA F TOKORO T
Citation
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
Journal title
Methods of information in medicine → ACNP
ISSN journal
00261270
Volume
33
Issue
1
Year of publication
1994
Pages
46 - 48
Database
ISI
SICI code
0026-1270(1994)33:1<46:TPORFI>2.0.ZU;2-G
Abstract
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.