EVALUATION OF PUPIL CONSTRICTION AND DILATION FROM CYCLING MEASUREMENTS

被引：40

作者：

MILTON, JG

LONGTIN, A

机构：

[1] MCGILL UNIV,DEPT PHYSIOL,MONTREAL H3G 7Y6,QUEBEC,CANADA

[2] MCGILL UNIV,DEPT PHYS,MONTREAL H3G 7Y6,QUEBEC,CANADA

来源：

VISION RESEARCH | 1990年 / 30卷 / 04期

关键词：

Delay-differential equations; Pupil constriction; Pupil dilation; Pupil light reflex;

D O I：

10.1016/0042-6989(90)90063-Q

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

Pupil cycling was produced using an electronic circuit so that the retina was illuminated in Maxwellian view only when pupil area exceeded an adjustable area threshold, Aref. The maximum (Amax) and minimum (Amin) amplitude of the oscillations varied linearly with Aref. These observations are described by a delay-differential equation. The Aref-dependent changes in Amax, Amin were used, respectively, to quantitate dilation and constriction. A comparison of the predicted and observed period of pupil cycling suggests that the latency times for light onset and offset are the same. Measurements of Amax, Amin provide a method for determining the average pupil light response. © 1990.

引用

页码：515 / 525

页数：11

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