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    A “virtually minimal” visuo-haptic training of attention in severe traumatic brain injury

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    Date
    2013-08
    Author
    Dvorkin, Assaf Y
    Ramaiya, Milan
    Larson, Eric B
    Zollman, Felise S
    Hsu, Nancy
    Pacini, Sonia
    Shah, Amit
    Patton, James L
    Publisher
    BioMed Central
    Metadata
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    Abstract
    Background: Although common during the early stages of recovery from severe traumatic brain injury (TBI), attention deficits have been scarcely investigated. Encouraging evidence suggests beneficial effects of attention training in more chronic and higher functioning patients. Interactive technology may provide new opportunities for rehabilitation in inpatients who are earlier in their recovery. Methods: We designed a “virtually minimal” approach using robot-rendered haptics in a virtual environment to train severely injured inpatients in the early stages of recovery to sustain attention to a visuo-motor task. 21 inpatients with severe TBI completed repetitive reaching toward targets that were both seen and felt. Patients were tested over two consecutive days, experiencing 3 conditions (no haptic feedback, a break-through force, and haptic nudge) in 12 successive, 4-minute blocks. Results: The interactive visuo-haptic environments were well-tolerated and engaging. Patients typically remained attentive to the task. However, patients exhibited attention loss both before (prolonged initiation) and during (pauses during motion) a movement. Compared to no haptic feedback, patients benefited from haptic nudge cues but not break-through forces. As training progressed, patients increased the number of targets acquired and spontaneously improved from one day to the next. Conclusions: Interactive visuo-haptic environments could be beneficial for attention training for severe TBI patients in the early stages of recovery and warrants further and more prolonged clinical testing.
    Subject
    Virtual reality
    Robotics
    Attention
    Type
    Article
    Date available in INDIGO
    2014-02-19T05:21:56Z
    URI
    http://hdl.handle.net/10027/11180
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    • Publications - Bioengineering

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