Laboratory and On-Road Investigations of Driving Performance in OSA.

    Research output: Contribution to journalMeeting Abstract


    Obstructive sleep Apnoea (OSA) is a common sleep disorder linked to
    poor driving performance and increased motor vehicle accident (MVA)
    risk. Driving is a complex, multifactor task that relies on continuous
    attention, vigilance, motor and visual coordination. Technological
    advances in the last 25 years have enabled the development of complex
    driving simulators that more closely mimic the real driving environment. Also, some researchers have recently taken the next step from
    driving simulation and have utilised dual control, instrumented vehicles
    to examine real on-road driving in OSA patients. However, on-road
    driving assessment and advanced driving simulators, while more realistic are costly and in the case of on-road assessment, potentially dangerous. It is reasonable to ask, therefore, weather they provide more
    valid data?
    The Divided Attention Steering Simulator (DASS) developed in the
    UK and the AusEd driving simulator developed jointly by UK and
    Australian investigators are simple relatively inexpensive computer
    based simulators able to acquire steering and speed deviation, divided
    attention, braking reaction and crash data at 10 Hz and 30 Hz respectively. The INRETS and the OKTAL simulator developed in France are
    more advanced with real car interior controls to manoeuvre the vehicle.
    They use large high defi nition display (3D for the OKTAL) and collect
    more comprehensive data from fuel consumption to steering, braking
    and crashes. On-road vehicles equipped with dual controls and video
    cameras able to detect lane position have now been used by French
    sleep researchers. The use of professional driving instructors to assess
    driving performance during on-road driving has also been used in
    When simple simulators such as the DASS have been compared to
    real driving, simulator performance measures correlate with on-road
    performance (relative validity) but tend to overestimate and magnify
    performance impairments relative to real driving. Higher fi delity simulators are found to more precisely represent real driving approaching
    “absolute validity”. The use of driving simulators and on-road driving
    experiments in patients with OSA reveal that regardless of which
    driving assessment tool is used, OSA patients’ consistently show signifi -
    cantly worse performance compared to non-OSA subjects, often with
    large effect sizes.
    Basic and more advanced driving simulators are useful to detect
    driving performance impairment in OSA patients particularly in simple
    experimental designs. With further development of high fi delity validated driving simulators, these tools should become more accessible
    and provide more reliable information on driving performance in OSA
    and other populations at risk of MVAs and allow for more complicated
    and realistic experimental designs.
    Original languageEnglish
    Article numberI012
    Pages (from-to)A3-A4
    Number of pages2
    JournalSleep and Biological Rhythms
    Issue numberSuppl 1
    Publication statusPublished - Oct 2010
    EventSleep Down Under 2010: Biodiversity of Sleep. Australian Sleep Association and Australian Sleep Technologists Association 22nd Annual Scientific Meeting. -
    Duration: 21 Oct 2010 → …


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