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- Richter, Hans O.Högskolan i Gävle,CBF,Centrum för belastningsskadeforskning (författare)
Stabilization of gaze : A relationship between ciliary muscle contraction and trapezius muscle activity
- Artikel/kapitelEngelska2010
Förlag, utgivningsår, omfång ...
- Elsevier BV,2010
- printrdacarrier
Nummerbeteckningar
- LIBRIS-ID:oai:DiVA.org:hig-7763
- https://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-7763URI
- https://doi.org/10.1016/j.visres.2010.08.021DOI
- https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-297050URI
- http://kipublications.ki.se/Default.aspx?queryparsed=id:121598836URI
Kompletterande språkuppgifter
- Språk:engelska
- Sammanfattning på:engelska
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- SwePubSwePub
Klassifikation
Anmärkningar
- QC 20210617
- In an experimental study four levels of oculomotor load were induced binocularly. Trapezius muscle activity was measured with bipolar surface electromyography and normalized to a submaximal contraction. Twenty-eight subjects with a mean age of 29 (range 19–42, std 8) viewed a high-contrast fixationt arget for four 5-min periods through: (i) 3.5 dioptre (D) lenses; (ii) 0 D lenses; (iii) individuallya djusted prism D lenses (1–2 D base out); and (iv) +3.5 D lenses. The target was placed close to thei ndividual’s age-appropriate near point of accommodation in conditions (i–iii) and at 3 m in condition( iv). Each subject’s ability to compensate for the added blur was extracted via infrared photorefraction measurements. A bitwise linear regression model was fitted on group level with eye-lens refraction on the x-axis and normalized trapezius muscle EMG (%RVE) on the y -axis. The model had a constant level of trapezius muscle activity – where subjects had not compensated for the incurred defocus by a change in eye-lens accommodation – and a slope, where the subjects had compensated. The slope coefficient was significantly positive in the D (i) and the +D blur conditions (iv). During no blur (ii) and prism blur (iii) there were no signs of relationships. Nor was there any sign of relationship between the convergence response and trapezius muscle EMG in any of the experimental conditions. The results appear directly attributable to an engagement of the eye-lens accommodative system and most likely reflect sensorimotor processing along its reflex arc for the purpose of achieving stabilization of gaze
Ämnesord och genrebeteckningar
- MEDICIN OCH HÄLSOVETENSKAP Hälsovetenskap Arbetsmedicin och miljömedicin hsv//swe
- MEDICAL AND HEALTH SCIENCES Health Sciences Occupational Health and Environmental Health hsv//eng
- Accommodation
- Attention
- EMG recordings
- Eye movements
- Motor control
Biuppslag (personer, institutioner, konferenser, titlar ...)
- Bänziger, TanjaHögskolan i Gävle,CBF,Centrum för belastningsskadeforskning(Swepub:hig)taabar (författare)
- Abdi, S.The Bernadotte Laboratories, St. Erik’s Eye Hospital, Department of Clinical Neuroscience, Karolinska Institutet, Sweden (författare)
- Forsman, Mikael,ProfessorKarolinska Institutet(Swepub:kth)u1iq0ct2 (författare)
- Högskolan i GävleCBF (creator_code:org_t)
Sammanhörande titlar
- Ingår i:Vision Research: Elsevier BV50:23, s. 2559-25690042-69891878-5646
Internetlänk
- https://doi.org/10.1016/j.visres.2010.08.021
- https://doi.org/10.1016/j.visres.2010.08.021Fulltext
- https://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-7763
- https://doi.org/10.1016/j.visres.2010.08.021
- https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-297050
- http://kipublications.ki.se/Default.aspx?queryparsed=id:121598836
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