OcrV1, PascalFrancis, Curation, bibRecord, 000594

Effects of Earth-Fixed vs Head-Fixed Targets on Static Ocular Counterroll

Identifieur interne : 000594 ( PascalFrancis/Curation ); précédent : 000593; suivant : 000595

Effects of Earth-Fixed vs Head-Fixed Targets on Static Ocular Counterroll

Auteurs : Manokaraananthan Chandrakumar [Canada] ; Zahra Hirji [Canada] ; Herbert C. Goltz [Canada] ; Giuseppe Mirabella [Canada] ; Alan W. Blakeman [Canada] ; Linda Colpa [Canada] ; Agnes M. F. Wong [Canada]

Source :

Archives of ophthalmology : (1960) [ 0003-9950 ] ; 2010.

RBID : Pascal:10-0226816

Descripteurs français

Pascal (Inist)
- Etude comparative, Tête, Cible, Statique, Oculaire, Oeil, Ophtalmologie.

English descriptors

KwdEn :
- Comparative study, Eye, Head, Ocular, Ophthalmology, Statics, Target.

Abstract

Objective: To investigate whether static ocular counterroll (OCR) gain is reduced during viewing of an earth-fixed vs a head-fixed target. Methods: Twelve healthy individuals were recruited. The target consisted of a red fixation cross against a grid pattern at a viewing distance of 33 cm. The target was mounted on a wall (earth fixed) or was coupled to the head (head fixed). Changes in mean torsional eye position were plotted as a function of head position steps (0°±25° in 5° steps), and sigmoidal fits were performed. Mean static OCR gain was calculated by taking the derivative of the fitted functions. Results: Mean static OCR gain was 40% lower with a head-fixed target (-0.084) than with an earth-fixed target (-0.141) (P<.001). Conclusion: The reduction in static OCR gain during viewing of a head-fixed target indicates that static OCR is partially negated when a target moves with the head.

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A11	`02`	`1`		`@1 HIRJI (Zahra)`
A11	`03`	`1`		`@1 GOLTZ (Herbert C.)`
A11	`04`	`1`		`@1 MIRABELLA (Giuseppe)`
A11	`05`	`1`		`@1 BLAKEMAN (Alan W.)`
A11	`06`	`1`		`@1 COLPA (Linda)`
A11	`07`	`1`		`@1 WONG (Agnes M. F.)`
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A44				`@0 0000 @1 © 2010 INIST-CNRS. All rights reserved.`
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A64	`01`	`1`		`@0 Archives of ophthalmology : (1960)`
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C01	`01`		`ENG`	@0 Objective: To investigate whether static ocular counterroll (OCR) gain is reduced during viewing of an earth-fixed vs a head-fixed target. Methods: Twelve healthy individuals were recruited. The target consisted of a red fixation cross against a grid pattern at a viewing distance of 33 cm. The target was mounted on a wall (earth fixed) or was coupled to the head (head fixed). Changes in mean torsional eye position were plotted as a function of head position steps (0°±25° in 5° steps), and sigmoidal fits were performed. Mean static OCR gain was calculated by taking the derivative of the fitted functions. Results: Mean static OCR gain was 40% lower with a head-fixed target (-0.084) than with an earth-fixed target (-0.141) (P<.001). Conclusion: The reduction in static OCR gain during viewing of a head-fixed target indicates that static OCR is partially negated when a target moves with the head.
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C03	`07`	`X`	`SPA`	`@0 Oftalmología @5 15`
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N44	`01`			`@1 OTO`
N82				`@1 OTO`

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Pascal:10-0226816

Le document en format XML

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<series><title level="j" type="main">Archives of ophthalmology : (1960)</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Comparative study</term>
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<term>Statics</term>
<term>Target</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Etude comparative</term>
<term>Tête</term>
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<front><div type="abstract" xml:lang="en">Objective: To investigate whether static ocular counterroll (OCR) gain is reduced during viewing of an earth-fixed vs a head-fixed target. Methods: Twelve healthy individuals were recruited. The target consisted of a red fixation cross against a grid pattern at a viewing distance of 33 cm. The target was mounted on a wall (earth fixed) or was coupled to the head (head fixed). Changes in mean torsional eye position were plotted as a function of head position steps (0°±25° in 5° steps), and sigmoidal fits were performed. Mean static OCR gain was calculated by taking the derivative of the fitted functions. Results: Mean static OCR gain was 40% lower with a head-fixed target (-0.084) than with an earth-fixed target (-0.141) (P<.001). Conclusion: The reduction in static OCR gain during viewing of a head-fixed target indicates that static OCR is partially negated when a target moves with the head.</div>
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</fA66>
<fC01 i1="01" l="ENG"><s0>Objective: To investigate whether static ocular counterroll (OCR) gain is reduced during viewing of an earth-fixed vs a head-fixed target. Methods: Twelve healthy individuals were recruited. The target consisted of a red fixation cross against a grid pattern at a viewing distance of 33 cm. The target was mounted on a wall (earth fixed) or was coupled to the head (head fixed). Changes in mean torsional eye position were plotted as a function of head position steps (0°±25° in 5° steps), and sigmoidal fits were performed. Mean static OCR gain was calculated by taking the derivative of the fitted functions. Results: Mean static OCR gain was 40% lower with a head-fixed target (-0.084) than with an earth-fixed target (-0.141) (P<.001). Conclusion: The reduction in static OCR gain during viewing of a head-fixed target indicates that static OCR is partially negated when a target moves with the head.</s0>
</fC01>
<fC02 i1="01" i2="X"><s0>002B09N</s0>
</fC02>
<fC03 i1="01" i2="X" l="FRE"><s0>Etude comparative</s0>
<s5>09</s5>
</fC03>
<fC03 i1="01" i2="X" l="ENG"><s0>Comparative study</s0>
<s5>09</s5>
</fC03>
<fC03 i1="01" i2="X" l="SPA"><s0>Estudio comparativo</s0>
<s5>09</s5>
</fC03>
<fC03 i1="02" i2="X" l="FRE"><s0>Tête</s0>
<s5>10</s5>
</fC03>
<fC03 i1="02" i2="X" l="ENG"><s0>Head</s0>
<s5>10</s5>
</fC03>
<fC03 i1="02" i2="X" l="SPA"><s0>Cabeza</s0>
<s5>10</s5>
</fC03>
<fC03 i1="03" i2="X" l="FRE"><s0>Cible</s0>
<s5>11</s5>
</fC03>
<fC03 i1="03" i2="X" l="ENG"><s0>Target</s0>
<s5>11</s5>
</fC03>
<fC03 i1="03" i2="X" l="SPA"><s0>Blanco</s0>
<s5>11</s5>
</fC03>
<fC03 i1="04" i2="X" l="FRE"><s0>Statique</s0>
<s5>12</s5>
</fC03>
<fC03 i1="04" i2="X" l="ENG"><s0>Statics</s0>
<s5>12</s5>
</fC03>
<fC03 i1="04" i2="X" l="SPA"><s0>Estática</s0>
<s5>12</s5>
</fC03>
<fC03 i1="05" i2="X" l="FRE"><s0>Oculaire</s0>
<s5>13</s5>
</fC03>
<fC03 i1="05" i2="X" l="ENG"><s0>Ocular</s0>
<s5>13</s5>
</fC03>
<fC03 i1="05" i2="X" l="SPA"><s0>Ocular</s0>
<s5>13</s5>
</fC03>
<fC03 i1="06" i2="X" l="FRE"><s0>Oeil</s0>
<s5>14</s5>
</fC03>
<fC03 i1="06" i2="X" l="ENG"><s0>Eye</s0>
<s5>14</s5>
</fC03>
<fC03 i1="06" i2="X" l="SPA"><s0>Ojo</s0>
<s5>14</s5>
</fC03>
<fC03 i1="07" i2="X" l="FRE"><s0>Ophtalmologie</s0>
<s5>15</s5>
</fC03>
<fC03 i1="07" i2="X" l="ENG"><s0>Ophthalmology</s0>
<s5>15</s5>
</fC03>
<fC03 i1="07" i2="X" l="SPA"><s0>Oftalmología</s0>
<s5>15</s5>
</fC03>
<fN21><s1>151</s1>
</fN21>
<fN44 i1="01"><s1>OTO</s1>
</fN44>
<fN82><s1>OTO</s1>
</fN82>
</pA>
</standard>
</inist>
</record>

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Effects of Earth-Fixed vs Head-Fixed Targets on Static Ocular Counterroll

Effects of Earth-Fixed vs Head-Fixed Targets on Static Ocular Counterroll

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