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National Repository of Grey Literature 1 records found  Search took 0.01 seconds. 
Eye-Tracking Control of an Adjustable Bed
 Kopeček, Martin ; Kremláček, Jan (advisor) ; Čapek, Lukáš (referee) ; Komzák, Martin (referee)
The origin of this work was based on the need to control an electric positioning bed by patients with no or significantly reduced upper limb motor skills. The key point and objective of the dissertation study was to develop non-contact alternatives to manual controls and to verify that the eye-tracking technique is usable and offers patients a new level of increased self-sufficiency. The thesis is organized into three related parts with experiments conducted at the detached departments and in the laboratory. After an introductory section covering the stages of development and current progressive trends in eye movement tracking, an experimental study of the applicability of bed control with the role of alternating head and leg position changes using on-screen graphical controls is described. This stage was conducted using a virtual bed. In a group of 17 patients with diagnoses of a pentaplegia, tetraplegia, high paraplegia, myopathy, and spinal muscular atrophy, the overall time to solve the task was 67.1 s (median) with a large interindividual variability with interquartile range from 56.7 s to 92.9 s. The solution efficiency (100 % matched to optimal performance) was 45.5 (34.9; 62.0) %. Within each group patients achieved different results for both studied parameters. When evaluating the features of the...
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