@article{ref1,
title="Driving with hemianopia V: do individuals with hemianopia spontaneously adapt their gaze scanning to differing hazard detection demands?",
journal="Translational vision science and technology",
year="2017",
author="Alberti, Concetta F. and Goldstein, Robert B. and Peli, Eli and Bowers, Alex R.",
volume="6",
number="5",
pages="e11-e11",
abstract="PURPOSE: We investigated whether people with homonymous hemianopia (HH) were able to spontaneously (without training or instructions) adapt their blind-side scan magnitudes in response to differing scanning requirements for detection of pedestrians in a driving simulator when differing cues about pedestrian eccentricities and movement behaviors were available in the seeing hemifield. <br><br>METHODS: Twelve HH participants completed two sessions in a driving simulator pressing the horn when they detected a pedestrian. Stationary pedestrians outside the driving lane were presented in one session and approaching pedestrians on a collision course in the other. Gaze data were analyzed for pedestrians initially appearing at approximately 14° in the blind hemifield. No instructions were given regarding scanning. <br><br>RESULTS: After appearing, the stationary pedestrians' eccentricity increased rapidly to a median of 31° after 2.5 seconds, requiring increasingly larger blind-side gaze scans for detection, while the approaching pedestrians' eccentricity remained constant at approximately 14°, requiring a more moderate scan (∼14°) for detection. Although median scan magnitudes did not differ between the two conditions (approaching: 14° [IQR 9°-15°]; stationary: 13° [IQR 9°-20°]; P = 0.43), three participants showed evidence of adapting (increasing) their blind-side scan magnitudes in the stationary condition. <br><br>CONCLUSIONS: Three participants (25%) appeared to be able to apply voluntary cognitive control to modify their blind-side gaze scanning in response to the differing scanning requirements of the two conditions without explicit training. TRANSLATIONAL RELEVANCE: Our results suggest that only a minority of people with hemianopia are likely to be able to spontaneously adapt their blind-side scanning in response to rapidly changing and unpredictable situations in on-road driving.<p /> <p>Language: en</p>",
language="en",
issn="2164-2591",
doi="10.1167/tvst.6.5.11",
url="http://dx.doi.org/10.1167/tvst.6.5.11"
}