Cardiovascular autonomic rhythms in spontaneous pupil fluctuations

Author

Calcagnini, Giovanni ; Lino, S. ; Censi, F. ; Calcagnini, Giovanni ; Cerutti, S.

Author_Institution

Dept. of Inf. & Syst. Sci., Rome Univ., Italy

fYear

1997

fDate

7-10 Sep 1997

Firstpage

133

Lastpage

136

Abstract

The aim of this paper was to investigate the relationship between spontaneous pupil diameter fluctuations and autonomic rhythms of cardiovascular variability signals. ECG, Finapres and respiration data from 10 normal subjects were recorded simultaneously to spontaneous pupil diameter fluctuations obtained from a portable infrared TV pupillometer. Power spectra of pupillary fluctuations showed in all the subjects a respiratory component with significant spectral coherence with the high frequency components of the tachogram and systogram. Moreover a discrete power distribution in the low frequency band have been identified; coherence with LF power in tachograms and systograms was significant in 6/10 subjects. It is concluded that cardiovascular autonomic rhythms can be detected in spontaneous pupil diameter fluctuations

Keywords

biocontrol; electrocardiography; eye; haemodynamics; infrared imaging; medical signal processing; neurophysiology; pneumodynamics; spectral analysis; ECG; Finapres data; cardiovascular autonomic rhythms; cardiovascular variability signals; central nervous system; discrete power distribution; high frequency components; low frequency band; portable infrared TV pupillometer; power spectra; respiration data; respiratory component; spectral coherence; spontaneous pupil diameter fluctuations; spontaneous pupil fluctuations; systogram; tachogram; Belts; Blood pressure; Cardiology; Electrocardiography; Fluctuations; Hafnium; Image sampling; Lighting; Rhythm; Spatial resolution;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers in Cardiology 1997

Conference_Location

Lund

ISSN

0276-6547

Print_ISBN

0-7803-4445-6

Type

conf

DOI

10.1109/CIC.1997.647848

Filename

647848