technique involved eye and head movements that were too rapid for her visual-cognitive system to capture and process.
A thorough review of the rehabilitation and science literature revealed that there has been little foundational research related to visual scanning, speed of head or eye movements, or duration of fixation that might apply to uncontrolled street-crossing situations. Expert opinion can be found in various references, including textbooks cited here published over the past forty years
International Journal of Orientation & Mobility , ISSUE 1, 35–40
points by normal-sighted controls. The occupational therapist gave this exercise a mean score of 2.8 ± 1.2 points. Figure 4 shows the score and standard deviation of each participant. An overview over the comments made about this exercise are shown in Table 6.
Average score given to the virtual street-crossing scenario by individuals with hemianopia, normal sighted controls and the occupational therapist. The error bars represent the standard deviation.
Comments on criteria
Frans W. Cornelissen,
Gera de Haan
International Journal of Orientation & Mobility , ISSUE 1, 7–19