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Simple devices for the physically disabled.

E Harrison·G T Vise
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Abstract

A report is given on a number of devices for the disabled that have been developed in the Biomedical Engineering Department at the Mississippi Methodist Rehabilitation Center. The primary criteria used in selection of devices to be included use simplicity, ease of fabrication and low cost.

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Automobile DrivingCommunication Devices for People with DisabilitiesPersons with DisabilitiesFemaleHumansMaleOrthopedic EquipmentSelf-Help DevicesUrinary CatheterizationWheelchairsJournal Article

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E Harrison, G T Vise. 1984. Simple devices for the physically disabled.. https://doi.org/10.1038/sc.1984.32

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Predictable eye-head coordination during driving.

Large changes in the direction of gaze are made with a combination of fast saccadic eye movements and rather slower head movements. Since the first study on freely moving subjects, most authors have agreed that the head movement component of gaze is very variable, with a high 'volitional' component. But in some circumstances head and eye movements can be quite predictable, for example when a subject is asked to shift gaze as quickly as possible. Under these conditions, laboratory studies have shown that the eye and head motor-systems both receive gaze-change commands, although they execute them in rather different ways. Here I reconsider the way gaze direction is changed during free movement, but in the performance of a task where the subject is too busy to exert conscious control over head or eye movements. Using a new portable and inexpensive method for recording head and eye movements, I examine the oculomotor behaviour of car drivers, particularly during the large gaze changes made at road junctions. The results show that the pattern of eye and head movements is highly predictable, given only the sequence of gaze targets.

Automobile Driving↗