@article {1237131,
	title = {Driving with Hemianopia V: Do Individuals with Hemianopia Spontaneously Adapt Their Gaze Scanning to Differing Hazard Detection Demands?},
	journal = {Transl Vis Sci Technol},
	volume = {6},
	number = {5},
	year = {2017},
	month = {2017 Sep},
	pages = {11},
	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.

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{\textdegree} in the blind hemifield. No instructions were given regarding scanning.

RESULTS: After appearing, the stationary pedestrians{\textquoteright} eccentricity increased rapidly to a median of 31{\textdegree} after 2.5 seconds, requiring increasingly larger blind-side gaze scans for detection, while the approaching pedestrians{\textquoteright} eccentricity remained constant at approximately 14{\textdegree}, requiring a more moderate scan (\~{}14{\textdegree}) for detection. Although median scan magnitudes did not differ between the two conditions (approaching: 14{\textdegree} [IQR 9{\textdegree}-15{\textdegree}]; stationary: 13{\textdegree} [IQR 9{\textdegree}-20{\textdegree}]; P = 0.43), three participants showed evidence of adapting (increasing) their blind-side scan magnitudes in the stationary condition.

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.},
	issn = {2164-2591},
	doi = {10.1167/tvst.6.5.11},
	author = {Alberti, Concetta F and Goldstein, Robert B and Peli, Eli and Bowers, Alex R}
}
