Driving with Hemianopia V: Do Individuals with Hemianopia Spontaneously Adapt Their Gaze Scanning to Differing Hazard Detection Demands?

@article{Alberti2017DrivingWH,
  title={Driving with Hemianopia V: Do Individuals with Hemianopia Spontaneously Adapt Their Gaze Scanning to Differing Hazard Detection Demands?},
  author={Concetta F. Alberti and Robert B. Goldstein and Eli Peli and Alex Bowers},
  journal={Translational Vision Science \& Technology},
  year={2017},
  volume={6}
}
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… 

Figures from this paper

Driving with hemianopia VIII: Effects of a vibro-tactile assistance system on safety and gaze behavior in pedestrian crossing situations.
TLDR
A prototype vibro-tactile assistance system for drivers with HVFDs is developed and a proof-of-concept driving simulation study is conducted to evaluate the system and the results suggest that the vibro, tactile directional warnings were effective in directing the drivers' gaze so that they were looking in the necessary direction before a potential hazard occurred.
Change blindness in simulated driving in individuals with homonymous visual field loss
TLDR
Individuals with HVFL may be more susceptible to failures of awareness, such as change blindness, than individuals with normal vision, which may result in motor vehicle crashes where the driver fails to notice the other road user.
Automatic processing of gaze movements to quantify gaze scanning behaviors in a driving simulator.
TLDR
An algorithm called the gaze scan algorithm that automatically quantifies the magnitude, duration, and composition of large lateral gaze scans that are used to scan the environment when driving and can be used to better understand how individuals scan their environment.
Peripheral Prisms for Visual Field Expansion: A Translational Journey.
  • E. Peli
  • Medicine
    Optometry and vision science : official publication of the American Academy of Optometry
  • 2020
TLDR
The invention and development of peripheral prisms to expand the visual fields of patients with homonymous hemianopia, leading to the latest multiperiscopic prism (mirror-based design) with its clear 45° field-of-view image shift.
Multi-periscopic prism device for field expansion.
TLDR
A new field expansion device: multi-periscopic prism (MPP); comprising a cascade of half-penta prisms provides wider shifting power with dramatically better image quality and wider eye scanning range is presented.
Biomechanical adaptation to post-stroke visual field loss: a systematic review
TLDR
Successful performance in naturalistic tasks of visual exploration appears to be related to compensatory mechanisms of visual exploratory behaviour, namely, an increase in the amplitude and peak velocity of saccades, widening horizontally the distribution of eye movements, and a shift of the overall distribution of sAccades into the blind field.
Towards Wide Range Tracking of Head Scanning Movement in Driving
TLDR
This is the first study in which SLAM has been employed to innovatively track head scanning over a very wide range, and laboratory experimental results showed that ORB-SLAM was more accurate than multi-loss ResNet-50, which often failed when many facial features were not in the view.
The Impact of Visual Field Loss on Driving Skills: A Systematic Narrative Review
TLDR
For driving, there is evidence that complete and/or binocular visual field loss poses more of a difficulty than partial and/ or monocular loss, and central defects cause more problems than peripheral defects.
Opportunities and Limitations of a Gaze-Contingent Display to Simulate Visual Field Loss in Driving Simulator Studies
Background Research on task performance under visual field loss is often limited due to small and heterogenous samples. Simulations of visual impairments hold the potential to account for many of
Driving With Hemianopia X: Effects of Cross Traffic on Gaze Behaviors and Pedestrian Responses at Intersections
TLDR
Investigating the effects of monitoring intersection cross traffic on gaze behaviors and responses to pedestrians by drivers with hemianopic field loss found cross traffic might serve as a reminder to scan and provide a reference point to guide blind-side scanning of drivers with HFL.
...
...

References

SHOWING 1-10 OF 22 REFERENCES
Driving with hemianopia: IV. Head scanning and detection at intersections in a simulator.
TLDR
Inadequate scanning resulted in blind-side detection failures, which might place HH drivers at increased risk for collisions at intersections and scanning training tailored to specific problem areas identified in this study might be beneficial.
Driving with hemianopia: III. Detection of stationary and approaching pedestrians in a simulator.
TLDR
In a realistic pedestrian detection task, drivers with HH exhibited significant blind-side detection deficits even when approaching pedestrians were detected, and responses were often too late to avoid a potential collision.
Inefficient search strategies in simulated hemianopia.
TLDR
This surprisingly inefficient search behavior suggests that eye movements are biased to salient visual stimuli even when it comes at a clear cost to search efficiency, and efficient strategies to compensate for visual deficits are not spontaneously adopted by healthy participants.
Driving with homonymous visual field loss: Does visual search performance predict hazard detection?
TLDR
It is suggested that the search task can predict, to a limited extent, whether a person with stroke compensates for visual field loss, and may potentially identify suitability for specific rehabilitation to promote return to driving.
A Pilot Evaluation of On-Road Detection Performance by Drivers with Hemianopia Using Oblique Peripheral Prisms
TLDR
These pilot data suggest that oblique peripheral prisms may improve responses of people with HH to blindside hazards when driving and provide the basis for a future, larger-sample clinical trial.
The role of peripheral vision in saccade planning: learning from people with tunnel vision.
TLDR
The effect of peripheral vision loss on saccadic behaviors in patients with tunnel vision in visual search and real-world walking experiments is investigated to provide a clue about the large extent of the top-down mechanism influence on eye movement control.
The Effects of Compensatory Scanning Training on Mobility in Patients with Homonymous Visual Field Defects: A Randomized Controlled Trial
TLDR
Self-reported improvements after training were found, accompanied by improvements in detecting peripheral stimuli and avoiding obstacles during walking, especially in dual task situations in which a second task limits the attentional capacity available for compensatory scanning.
Rehabilitation of reading and visual exploration in visual field disorders: transfer or specificity?
TLDR
This is the first cross-over rehabilitation study to determine whether the training-related performance improvements are task-specific, or whether there is a transfer of training- related improvements between reading and visual exploration.
Driving with homonymous visual field loss: a review of the literature
  • A. Bowers
  • Medicine
    Clinical & experimental optometry
  • 2016
TLDR
A review of the literature provides a much‐needed summary for practitioners and researchers, addressing the following topics: regulations pertaining to driving with HFDs, self‐reported driving difficulties, pass rates in on‐road tests, and the effects of H FDs on lane position and steering stability.
...
...