Development of a Wheelchair Virtual Driving Environment: Trials With Subjects With Traumatic Brain Injury

Donald M. Spaeth, Harshal Mahajan, Amol Karmarkar, Diane Collins, Rory A. Cooper, Michael L. Boninger

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Spaeth DM, Mahajan H, Karmarkar A, Collins D, Cooper RA, Boninger ML. Development of a wheelchair virtual driving environment: trials with subjects with traumatic brain injury. Objective: To develop and test a wheelchair virtual driving environment that can provide quantifiable measures of driving ability, offer driver training, and measure the performance of alternative controls. Design: A virtual driving environment was developed. The wheelchair icon is displayed in a 2-dimensional, bird's eye view and has realistic steering and inertial properties. Eight subjects were recruited to test the virtual driving environment. They were clinically evaluated for range of motion, muscle strength, and visual field function. Driving capacity was assessed by a brief trial with an actual wheelchair. During virtual trials, subjects were seated in a stationary wheelchair; a standard motion sensing joystick (MSJ) was compared with an experimental isometric joystick by using a repeated-measures design. Setting: Subjects made 2 laboratory visits. The first visit included clinical evaluation, tuning the isometric joystick, familiarization with virtual driving environment, and 4 driving tasks. The second visit included 40 trials with each joystick. Participants: Subjects (n=8; 7 men, 1 woman) with a mean age of 22.65±2y and traumatic brain injury, both ambulatory and nonambulatory, were recruited. Interventions: The MSJ used factory settings. A tuning program customized the isometric joystick transfer functions during visit 1. During the second visit, subjects performed 40 trials with each joystick. Main Outcome Measure: The root mean square error (RMSE) was defined as the average deviation from track centerline (in meters) and speed (in m/s). Results: Data analysis from the first 8 subjects showed no statistically significant differences between joysticks. RMSE averaged .12 to .21m; speed averaged .75m/s. For all tasks and joysticks, driving in reverse resulted in a higher RMSE and more virtual collisions than forward driving. RMSE rates were greater in left and right turns than straight and docking tasks. Conclusions: Testing with instrumented real wheelchairs can validate the virtual driving environment and assess whether virtual driving skills transfer to actual driving.

Original languageEnglish (US)
Pages (from-to)996-1003
Number of pages8
JournalArchives of Physical Medicine and Rehabilitation
Volume89
Issue number5
DOIs
StatePublished - May 2008
Externally publishedYes

Fingerprint

Wheelchairs
Aptitude
Muscle Strength
Articular Range of Motion
Visual Fields
Traumatic Brain Injury
Outcome Assessment (Health Care)

Keywords

  • Brain injuries
  • Rehabilitation
  • Wheelchairs

ASJC Scopus subject areas

  • Rehabilitation

Cite this

Development of a Wheelchair Virtual Driving Environment : Trials With Subjects With Traumatic Brain Injury. / Spaeth, Donald M.; Mahajan, Harshal; Karmarkar, Amol; Collins, Diane; Cooper, Rory A.; Boninger, Michael L.

In: Archives of Physical Medicine and Rehabilitation, Vol. 89, No. 5, 05.2008, p. 996-1003.

Research output: Contribution to journalArticle

Spaeth, Donald M. ; Mahajan, Harshal ; Karmarkar, Amol ; Collins, Diane ; Cooper, Rory A. ; Boninger, Michael L. / Development of a Wheelchair Virtual Driving Environment : Trials With Subjects With Traumatic Brain Injury. In: Archives of Physical Medicine and Rehabilitation. 2008 ; Vol. 89, No. 5. pp. 996-1003.
@article{d0cbe38e1aee447ea0089000170ea7e7,
title = "Development of a Wheelchair Virtual Driving Environment: Trials With Subjects With Traumatic Brain Injury",
abstract = "Spaeth DM, Mahajan H, Karmarkar A, Collins D, Cooper RA, Boninger ML. Development of a wheelchair virtual driving environment: trials with subjects with traumatic brain injury. Objective: To develop and test a wheelchair virtual driving environment that can provide quantifiable measures of driving ability, offer driver training, and measure the performance of alternative controls. Design: A virtual driving environment was developed. The wheelchair icon is displayed in a 2-dimensional, bird's eye view and has realistic steering and inertial properties. Eight subjects were recruited to test the virtual driving environment. They were clinically evaluated for range of motion, muscle strength, and visual field function. Driving capacity was assessed by a brief trial with an actual wheelchair. During virtual trials, subjects were seated in a stationary wheelchair; a standard motion sensing joystick (MSJ) was compared with an experimental isometric joystick by using a repeated-measures design. Setting: Subjects made 2 laboratory visits. The first visit included clinical evaluation, tuning the isometric joystick, familiarization with virtual driving environment, and 4 driving tasks. The second visit included 40 trials with each joystick. Participants: Subjects (n=8; 7 men, 1 woman) with a mean age of 22.65±2y and traumatic brain injury, both ambulatory and nonambulatory, were recruited. Interventions: The MSJ used factory settings. A tuning program customized the isometric joystick transfer functions during visit 1. During the second visit, subjects performed 40 trials with each joystick. Main Outcome Measure: The root mean square error (RMSE) was defined as the average deviation from track centerline (in meters) and speed (in m/s). Results: Data analysis from the first 8 subjects showed no statistically significant differences between joysticks. RMSE averaged .12 to .21m; speed averaged .75m/s. For all tasks and joysticks, driving in reverse resulted in a higher RMSE and more virtual collisions than forward driving. RMSE rates were greater in left and right turns than straight and docking tasks. Conclusions: Testing with instrumented real wheelchairs can validate the virtual driving environment and assess whether virtual driving skills transfer to actual driving.",
keywords = "Brain injuries, Rehabilitation, Wheelchairs",
author = "Spaeth, {Donald M.} and Harshal Mahajan and Amol Karmarkar and Diane Collins and Cooper, {Rory A.} and Boninger, {Michael L.}",
year = "2008",
month = "5",
doi = "10.1016/j.apmr.2007.11.030",
language = "English (US)",
volume = "89",
pages = "996--1003",
journal = "Archives of Physical Medicine and Rehabilitation",
issn = "0003-9993",
publisher = "W.B. Saunders Ltd",
number = "5",

}

TY - JOUR

T1 - Development of a Wheelchair Virtual Driving Environment

T2 - Trials With Subjects With Traumatic Brain Injury

AU - Spaeth, Donald M.

AU - Mahajan, Harshal

AU - Karmarkar, Amol

AU - Collins, Diane

AU - Cooper, Rory A.

AU - Boninger, Michael L.

PY - 2008/5

Y1 - 2008/5

N2 - Spaeth DM, Mahajan H, Karmarkar A, Collins D, Cooper RA, Boninger ML. Development of a wheelchair virtual driving environment: trials with subjects with traumatic brain injury. Objective: To develop and test a wheelchair virtual driving environment that can provide quantifiable measures of driving ability, offer driver training, and measure the performance of alternative controls. Design: A virtual driving environment was developed. The wheelchair icon is displayed in a 2-dimensional, bird's eye view and has realistic steering and inertial properties. Eight subjects were recruited to test the virtual driving environment. They were clinically evaluated for range of motion, muscle strength, and visual field function. Driving capacity was assessed by a brief trial with an actual wheelchair. During virtual trials, subjects were seated in a stationary wheelchair; a standard motion sensing joystick (MSJ) was compared with an experimental isometric joystick by using a repeated-measures design. Setting: Subjects made 2 laboratory visits. The first visit included clinical evaluation, tuning the isometric joystick, familiarization with virtual driving environment, and 4 driving tasks. The second visit included 40 trials with each joystick. Participants: Subjects (n=8; 7 men, 1 woman) with a mean age of 22.65±2y and traumatic brain injury, both ambulatory and nonambulatory, were recruited. Interventions: The MSJ used factory settings. A tuning program customized the isometric joystick transfer functions during visit 1. During the second visit, subjects performed 40 trials with each joystick. Main Outcome Measure: The root mean square error (RMSE) was defined as the average deviation from track centerline (in meters) and speed (in m/s). Results: Data analysis from the first 8 subjects showed no statistically significant differences between joysticks. RMSE averaged .12 to .21m; speed averaged .75m/s. For all tasks and joysticks, driving in reverse resulted in a higher RMSE and more virtual collisions than forward driving. RMSE rates were greater in left and right turns than straight and docking tasks. Conclusions: Testing with instrumented real wheelchairs can validate the virtual driving environment and assess whether virtual driving skills transfer to actual driving.

AB - Spaeth DM, Mahajan H, Karmarkar A, Collins D, Cooper RA, Boninger ML. Development of a wheelchair virtual driving environment: trials with subjects with traumatic brain injury. Objective: To develop and test a wheelchair virtual driving environment that can provide quantifiable measures of driving ability, offer driver training, and measure the performance of alternative controls. Design: A virtual driving environment was developed. The wheelchair icon is displayed in a 2-dimensional, bird's eye view and has realistic steering and inertial properties. Eight subjects were recruited to test the virtual driving environment. They were clinically evaluated for range of motion, muscle strength, and visual field function. Driving capacity was assessed by a brief trial with an actual wheelchair. During virtual trials, subjects were seated in a stationary wheelchair; a standard motion sensing joystick (MSJ) was compared with an experimental isometric joystick by using a repeated-measures design. Setting: Subjects made 2 laboratory visits. The first visit included clinical evaluation, tuning the isometric joystick, familiarization with virtual driving environment, and 4 driving tasks. The second visit included 40 trials with each joystick. Participants: Subjects (n=8; 7 men, 1 woman) with a mean age of 22.65±2y and traumatic brain injury, both ambulatory and nonambulatory, were recruited. Interventions: The MSJ used factory settings. A tuning program customized the isometric joystick transfer functions during visit 1. During the second visit, subjects performed 40 trials with each joystick. Main Outcome Measure: The root mean square error (RMSE) was defined as the average deviation from track centerline (in meters) and speed (in m/s). Results: Data analysis from the first 8 subjects showed no statistically significant differences between joysticks. RMSE averaged .12 to .21m; speed averaged .75m/s. For all tasks and joysticks, driving in reverse resulted in a higher RMSE and more virtual collisions than forward driving. RMSE rates were greater in left and right turns than straight and docking tasks. Conclusions: Testing with instrumented real wheelchairs can validate the virtual driving environment and assess whether virtual driving skills transfer to actual driving.

KW - Brain injuries

KW - Rehabilitation

KW - Wheelchairs

UR - http://www.scopus.com/inward/record.url?scp=42649105111&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=42649105111&partnerID=8YFLogxK

U2 - 10.1016/j.apmr.2007.11.030

DO - 10.1016/j.apmr.2007.11.030

M3 - Article

C2 - 18452751

AN - SCOPUS:42649105111

VL - 89

SP - 996

EP - 1003

JO - Archives of Physical Medicine and Rehabilitation

JF - Archives of Physical Medicine and Rehabilitation

SN - 0003-9993

IS - 5

ER -