Methods Inf Med 2000; 39(02): 122-124
DOI: 10.1055/s-0038-1634286
Original Article
Schattauer GmbH

Neurologial Interpretations and the Information in the Cognitive Pupillary Response

W. D. O’Neill
1  Departments of Bioengineering, and Electrical Engineering and Computer Science, University of Illinois, Chicago, USA
,
S. Zimmerman
1  Departments of Bioengineering, and Electrical Engineering and Computer Science, University of Illinois, Chicago, USA
› Author Affiliations
Further Information

Publication History

Publication Date:
07 February 2018 (online)

Abstract:

It has been known for 70 years that the human pupil dilates when a person responds to a cognitive task. Further, it is known that parasympathetic pupillary innervation decreases with raised attention state while sympathetic innervation increases. But the information the pupil transmits during elevated attention states about such neurological dynamics and a quantitative measure of this information have defied statistical modelling. Now we describe experiments using a short-term memory task called an acoustic impulse test in which the pupillary dynamics in response to random acoustic impulses are recorded with a high resolution (0.01mm) pupillometer with the result that parasympathetic and sympathetic pupillary dilation components are quantifiable, as is the information transmitted by these components.