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Proceedings Paper

Discrete-time model to test links between EEG power and pupil diameter measured by infrared cameras
Author(s): Andrew P. Keegan; S. L. Merritt
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Paper Abstract

Using infrared sensitive cameras and on-line image processing, pupil diameters of awake, eyes-open subjects were measured. Concurrently, electroencephalography (EEG) was monitored and power in the delta (0.5-4Hz), theta (4-8Hz), alpha (8-12Hz), sigma (12-16Hz), beta1 (16-26Hz), and beta2 (26-50Hz) bands were calculated. Pupil diameter and EEG power measured were found to be significantly correlated. Other EEG measures including relative beta (defined here as [power of 16-50Hz]/[power of 4-50Hz]) and centroid frequency of the 4-50Hz band were also found to be significantly related to pupil diameter.

Paper Details

Date Published: 18 August 1995
PDF: 8 pages
Proc. SPIE 2622, Optical Engineering Midwest '95, (18 August 1995); doi: 10.1117/12.216870
Show Author Affiliations
Andrew P. Keegan, Univ. of Illinois/Chicago (United States)
S. L. Merritt, Univ. of Illinois/Chicago (United States)


Published in SPIE Proceedings Vol. 2622:
Optical Engineering Midwest '95
Rudolph P. Guzik, Editor(s)

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