Stimulation and recording of dynamic pupillary reflex: the IRIS technique Part 2

J. P.H. Reulen; J. T. Marcus; M. J. van Gilst; D. Koops; J. E. Bos; G. Tiesinga; F. R. de Vries; K. Boshuizen

doi:10.1007/BF02441824

Stimulation and recording of dynamic pupillary reflex: the IRIS technique Part 2

J. P.H. Reulen^*, J. T. Marcus, M. J. van Gilst, D. Koops, J. E. Bos, G. Tiesinga, F. R. de Vries, K. Boshuizen

^*Corresponding author for this work

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

The paper describes a newly developed method, called IRIS, for the recording of dynamic pupillary reflexes simultaneously in both eyes. The method is based on the principle of reflection of infra-red light by the iris/pupil boundary. IRIS incorporates a head-fixed. Maxwellian viewing-light stimulator driven by a function generator. IRIS enables pupillary constriction and dilation to be recorded in response to a pulsed light stimulus, thereby permitting determination of the latency times of constriction and dilation. Furthermore, the recording of natural pupil oscillations, the hippus, is possible. IRIS incorporates a clamp-box mode, permitting the study of stimulus-induced pupil oscillations and pupil cycle time. The compact and portable IRIS pupil system combines reliable and accurate recording with general versatility and ease of operation.

Original language	English
Pages (from-to)	27-32
Number of pages	6
Journal	Medical & Biological Engineering & Computing
Volume	26
Issue number	1
DOIs	https://doi.org/10.1007/BF02441824
Publication status	Published - 1 Jan 1988

Keywords

Eye movements
Infra-red light
Light reflex
Pupil
Recording
Reflection

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10.1007/BF02441824

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title = "Stimulation and recording of dynamic pupillary reflex: the IRIS technique Part 2",

abstract = "The paper describes a newly developed method, called IRIS, for the recording of dynamic pupillary reflexes simultaneously in both eyes. The method is based on the principle of reflection of infra-red light by the iris/pupil boundary. IRIS incorporates a head-fixed. Maxwellian viewing-light stimulator driven by a function generator. IRIS enables pupillary constriction and dilation to be recorded in response to a pulsed light stimulus, thereby permitting determination of the latency times of constriction and dilation. Furthermore, the recording of natural pupil oscillations, the hippus, is possible. IRIS incorporates a clamp-box mode, permitting the study of stimulus-induced pupil oscillations and pupil cycle time. The compact and portable IRIS pupil system combines reliable and accurate recording with general versatility and ease of operation.",

keywords = "Eye movements, Infra-red light, Light reflex, Pupil, Recording, Reflection",

author = "Reulen, {J. P.H.} and Marcus, {J. T.} and {van Gilst}, {M. J.} and D. Koops and Bos, {J. E.} and G. Tiesinga and {de Vries}, {F. R.} and K. Boshuizen",

year = "1988",

month = jan,

day = "1",

doi = "10.1007/BF02441824",

language = "English",

volume = "26",

pages = "27--32",

journal = "Medical & Biological Engineering & Computing",

issn = "0140-0118",

publisher = "Springer Verlag",

number = "1",

}

Stimulation and recording of dynamic pupillary reflex : the IRIS technique Part 2. / Reulen, J. P.H.; Marcus, J. T.; van Gilst, M. J.; Koops, D.; Bos, J. E.; Tiesinga, G.; de Vries, F. R.; Boshuizen, K.

In: Medical & Biological Engineering & Computing, Vol. 26, No. 1, 01.01.1988, p. 27-32.

Research output: Contribution to Journal › Article › Academic › peer-review

TY - JOUR

T1 - Stimulation and recording of dynamic pupillary reflex

T2 - the IRIS technique Part 2

AU - Reulen, J. P.H.

AU - Marcus, J. T.

AU - van Gilst, M. J.

AU - Koops, D.

AU - Bos, J. E.

AU - Tiesinga, G.

AU - de Vries, F. R.

AU - Boshuizen, K.

PY - 1988/1/1

Y1 - 1988/1/1

N2 - The paper describes a newly developed method, called IRIS, for the recording of dynamic pupillary reflexes simultaneously in both eyes. The method is based on the principle of reflection of infra-red light by the iris/pupil boundary. IRIS incorporates a head-fixed. Maxwellian viewing-light stimulator driven by a function generator. IRIS enables pupillary constriction and dilation to be recorded in response to a pulsed light stimulus, thereby permitting determination of the latency times of constriction and dilation. Furthermore, the recording of natural pupil oscillations, the hippus, is possible. IRIS incorporates a clamp-box mode, permitting the study of stimulus-induced pupil oscillations and pupil cycle time. The compact and portable IRIS pupil system combines reliable and accurate recording with general versatility and ease of operation.

AB - The paper describes a newly developed method, called IRIS, for the recording of dynamic pupillary reflexes simultaneously in both eyes. The method is based on the principle of reflection of infra-red light by the iris/pupil boundary. IRIS incorporates a head-fixed. Maxwellian viewing-light stimulator driven by a function generator. IRIS enables pupillary constriction and dilation to be recorded in response to a pulsed light stimulus, thereby permitting determination of the latency times of constriction and dilation. Furthermore, the recording of natural pupil oscillations, the hippus, is possible. IRIS incorporates a clamp-box mode, permitting the study of stimulus-induced pupil oscillations and pupil cycle time. The compact and portable IRIS pupil system combines reliable and accurate recording with general versatility and ease of operation.

KW - Eye movements

KW - Infra-red light

KW - Light reflex

KW - Pupil

KW - Recording

KW - Reflection

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Stimulation and recording of dynamic pupillary reflex: the IRIS technique Part 2

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Keywords

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