hig.sePublications
Change search
ExportLink to record
Permanent link

Direct link
BETA

Project

Project type/Form of grant
Project grant
Title [sv]
Ett nytt verktyg för objektiva mätningar av rubbningar i finmotoriska öga-hand rörelser: Clinical Kinematic Assessment Tool (C-KAT)
Abstract [sv]
60 miljoner människor inom EU jobbar framför datorer. Det ger ofta synproblem, i synnerhet vid bildskärmsarbete. Ögontrötthet, värk, sveda, tillfällig närsynthet och värk i huvud, nacke/skuldror är vanligt. Nedsatt syn medför dessutom försämrad öga-hand koordination. Projektet undersökte sambandet mellan värk, syn och handrörelse. SyfteProjektet skulle titta på rubbningar i finmotoriken mellan öga-hand koordinationen med hjälp av mjukvaran C-KAT (Clinical Kinematic Assessment Tool). Forskningsfrågorna var om synkrävande arbete på nära håll är en risk för värk i muskler och leder och om nedsatt syn stör handmotoriken. Genomförande:I projektet skulle en portabel dator med mjukvaran C-KAT användas för en testgrupp som bestod av 35 friska personer med olika grader av besvär och 35 personer med synsvaghet samt besvär från muskler och leder. Bildskärmen placerades i försökspersonernas vardagliga arbetsmiljö, vilket gjorde att tester i laboratoriemiljö undveks. C-KAT har möjligheter till avancerad dataanalys och kan med mäta precisionen i finmotoriska öga-hand rörelser. Metoden hade dock vissa mätfel så projektet tog fram en egen mjukvara: E-KAT. Muskelaktivitet registrerades och ögonrörelser följdes hos dem som deltog i testet. Resultat: Projektets yttersta syfte var att utveckla tester som kan leda till en bättre synergonomisk arbetsmiljö. Resultaten visar att öga-hand-koordinationen varierar med arbetsminneskapaciteten samt att minskad synförmåga hänger samman med minskad precision i handrörelserna. De sprids via vetenskaplig publicering samt muntligt via Nordiska ergonomisällskapet (NES) och Internationella ergonomisällskapet (IEA).
Publications (3 of 3) Show all publications
Domkin, D., Richter, H., Zetterlund, C. & Lundqvist, L.-O. (2016). Effect of reduced visual acuity on precision of two-dimensional tracing movements. Journal of Optometry, 9(2), 93-101
Open this publication in new window or tab >>Effect of reduced visual acuity on precision of two-dimensional tracing movements
2016 (English)In: Journal of Optometry, ISSN 1888-4296, Vol. 9, no 2, p. 93-101Article in journal (Refereed) Published
Abstract [en]

Purpose

We intended to assess consequences of reduced visual acuity for performance in a natural simple motor task (tracing) using objective kinematic performance measures. Specifically, we intended to elucidate the kind of relationship between the task performance and best corrected binocular visual acuity and to determine the threshold of visual acuity when task performance starts to deteriorate.

Methods

Ninety-five individuals with different best corrected visual acuity participated in the study (age 49 ± 12 years, mean ± SD, 27 men and 68 women). The participants manually traced maze-like visual patterns of different spatial complexity presented on the screen of a portable notebook computer using Clinical Kinematic Assessment Tool software. Tracing error was computed as performance measure in each trial with a spatial pattern matching technique – rigid point set registration method.

Results

The segmented linear regression analysis showed that the relation between visual acuity and tracing errors was best described with a regression function having a break point between two data segments. Tracing performance was unaffected by values of visual acuity below 0.2 on logMAR scale, but when logMAR values increased above this critical limit (i.e. when visual acuity is further reduced), tracing errors linearly increased. The rate of the increase of the tracing error correlated with the complexity of visual stimulus shape.

Conclusion

Testing of fine motor functions with objective kinematic measures during visuomotor tasks may help differentiating between actual effects of reduced visual acuity on eye–hand coordination in individuals with similar levels of impairment of visual acuity.

Keywords
eye-hand coordination, tracing, visual acuity, low vision
National Category
Other Medical Sciences not elsewhere specified
Identifiers
urn:nbn:se:hig:diva-17478 (URN)10.1016/j.optom.2015.03.003 (DOI)2-s2.0-84929603184 (Scopus ID)
Available from: 2014-09-09 Created: 2014-09-09 Last updated: 2022-09-15Bibliographically approved
Domkin, D., Sörqvist, P. & Richter, H. (2013). Distraction of Eye-Hand Coordination varies with Working Memory Capacity. Journal of motor behavior, 45(1), 79-83
Open this publication in new window or tab >>Distraction of Eye-Hand Coordination varies with Working Memory Capacity
2013 (English)In: Journal of motor behavior, ISSN 0022-2895, E-ISSN 1940-1027, Vol. 45, no 1, p. 79-83Article in journal (Refereed) Published
Abstract [en]

The authors present a study of the relationship between individual variation in working memory capacity (WMC) and visually guided hand control in the face of visual distraction. WMC was assessed with the automated operation span task. Hand control was measured by requesting participants to track a visual target with a hand-held touch screen pen. Tracking error increased when nontarget visual objects (distractors) appeared, especially in individuals with low WMC. High-WMC individuals are less impaired by distractors than their low-WMC counterpart, because they resume target tracking more quickly after distractor onset. The results suggest that visual distractors cause a momentary interruption to tracking movements and that high WMC attenuates this interruption by facilitating visual search.

National Category
Psychology
Identifiers
urn:nbn:se:hig:diva-13311 (URN)10.1080/00222895.2012.746282 (DOI)000322304400010 ()23406167 (PubMedID)2-s2.0-84874498399 (Scopus ID)
Available from: 2012-10-28 Created: 2012-10-28 Last updated: 2022-09-15Bibliographically approved
Domkin, D., Sörqvist, P. & Richter, H. (2012). Performance and fatigue perception during strenuous near work in persons with different levels of working memory capacity. In: : . Paper presented at NES 2012, Saltsjöbaden, Stockholm, 19-22 augusti 2012.
Open this publication in new window or tab >>Performance and fatigue perception during strenuous near work in persons with different levels of working memory capacity
2012 (English)Conference paper, Published paper (Refereed)
National Category
Psychology Health Sciences
Identifiers
urn:nbn:se:hig:diva-11575 (URN)
Conference
NES 2012, Saltsjöbaden, Stockholm, 19-22 augusti 2012
Available from: 2012-02-27 Created: 2012-02-27 Last updated: 2022-09-15Bibliographically approved
Principal InvestigatorRichter, Hans
Co-InvestigatorDomkin, Dmitry
Co-InvestigatorZetterlund, Christina
Co-InvestigatorLundqvist, Lars-Olov
Coordinating organisation
University of Gävle
Funder
Period
2010-12-01 - 2012-12-01
National Category
Occupational Health and Environmental Health
Identifiers
DiVA, id: project:2219

Search in DiVA

Occupational Health and Environmental Health

Search outside of DiVA

GoogleGoogle Scholar