Conjugacy of eyelid movements in vertical eye saccades

R J Wouters; W A van den Bosch; T Stijnen; A C Bubberman; H Collewijn; H G Lemij

Conjugacy of eyelid movements in vertical eye saccades

R J Wouters, W A van den Bosch, T Stijnen, A C Bubberman, H Collewijn, H G Lemij

Research output: Contribution to journal › Article › Research › peer-review

Abstract

PURPOSE: To examine the conjugacy of lid saccades in normal subjects.

METHODS: Saccades of both upper eyelids were recorded simultaneously by means of small, lightweight, magnetic search coils, fixed on each lid. Subjects then made vertical eye saccades between fixed targets. The associated eye saccades were recorded simultaneously by means of magnetic search coils. The authors further examined whether the position of the lid coils affected the recordings.

RESULTS: Lid saccades were not as conjugate as their associated eye saccades. Nonconjugacy of lid saccades averaged approximately 8% of the target amplitude, irrespective of saccadic direction. By contrast, nonconjugacy of the associated eye saccades averaged approximately 1% of the target amplitude. Coil position significantly (P < 0.05) affected the recordings.

CONCLUSIONS: Lid saccades are not as conjugate as their associated eye saccades. Coil position is critical for the recordings of lid saccades.

Original language	English
Pages (from-to)	2686-94
Number of pages	9
Journal	Investigative ophthalmology & visual science
Volume	36
Issue number	13
Publication status	Published - Dec 1995

Keywords

Adult
Eyelids/physiology
Female
Humans
Magnetics
Male
Middle Aged
Movement
Reaction Time
Saccades

Cite this

@article{5ac514677a984ffb9cd1f04f5c068793,

title = "Conjugacy of eyelid movements in vertical eye saccades",

abstract = "PURPOSE: To examine the conjugacy of lid saccades in normal subjects.METHODS: Saccades of both upper eyelids were recorded simultaneously by means of small, lightweight, magnetic search coils, fixed on each lid. Subjects then made vertical eye saccades between fixed targets. The associated eye saccades were recorded simultaneously by means of magnetic search coils. The authors further examined whether the position of the lid coils affected the recordings.RESULTS: Lid saccades were not as conjugate as their associated eye saccades. Nonconjugacy of lid saccades averaged approximately 8% of the target amplitude, irrespective of saccadic direction. By contrast, nonconjugacy of the associated eye saccades averaged approximately 1% of the target amplitude. Coil position significantly (P < 0.05) affected the recordings.CONCLUSIONS: Lid saccades are not as conjugate as their associated eye saccades. Coil position is critical for the recordings of lid saccades.",

keywords = "Adult, Eyelids/physiology, Female, Humans, Magnetics, Male, Middle Aged, Movement, Reaction Time, Saccades",

author = "Wouters, {R J} and {van den Bosch}, {W A} and T Stijnen and Bubberman, {A C} and H Collewijn and Lemij, {H G}",

year = "1995",

month = dec,

language = "English",

volume = "36",

pages = "2686--94",

number = "13",

}

TY - JOUR

T1 - Conjugacy of eyelid movements in vertical eye saccades

AU - Wouters, R J

AU - van den Bosch, W A

AU - Stijnen, T

AU - Bubberman, A C

AU - Collewijn, H

AU - Lemij, H G

PY - 1995/12

Y1 - 1995/12

N2 - PURPOSE: To examine the conjugacy of lid saccades in normal subjects.METHODS: Saccades of both upper eyelids were recorded simultaneously by means of small, lightweight, magnetic search coils, fixed on each lid. Subjects then made vertical eye saccades between fixed targets. The associated eye saccades were recorded simultaneously by means of magnetic search coils. The authors further examined whether the position of the lid coils affected the recordings.RESULTS: Lid saccades were not as conjugate as their associated eye saccades. Nonconjugacy of lid saccades averaged approximately 8% of the target amplitude, irrespective of saccadic direction. By contrast, nonconjugacy of the associated eye saccades averaged approximately 1% of the target amplitude. Coil position significantly (P < 0.05) affected the recordings.CONCLUSIONS: Lid saccades are not as conjugate as their associated eye saccades. Coil position is critical for the recordings of lid saccades.

AB - PURPOSE: To examine the conjugacy of lid saccades in normal subjects.METHODS: Saccades of both upper eyelids were recorded simultaneously by means of small, lightweight, magnetic search coils, fixed on each lid. Subjects then made vertical eye saccades between fixed targets. The associated eye saccades were recorded simultaneously by means of magnetic search coils. The authors further examined whether the position of the lid coils affected the recordings.RESULTS: Lid saccades were not as conjugate as their associated eye saccades. Nonconjugacy of lid saccades averaged approximately 8% of the target amplitude, irrespective of saccadic direction. By contrast, nonconjugacy of the associated eye saccades averaged approximately 1% of the target amplitude. Coil position significantly (P < 0.05) affected the recordings.CONCLUSIONS: Lid saccades are not as conjugate as their associated eye saccades. Coil position is critical for the recordings of lid saccades.

KW - Adult

KW - Eyelids/physiology

KW - Female

KW - Humans

KW - Magnetics

KW - Male

KW - Middle Aged

KW - Movement

KW - Reaction Time

KW - Saccades

M3 - Article

C2 - 7499091

SN - 0146-0404

VL - 36

SP - 2686

EP - 2694

JO - Investigative ophthalmology & visual science

JF - Investigative ophthalmology & visual science

IS - 13

ER -

Conjugacy of eyelid movements in vertical eye saccades

Abstract

Keywords

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