Advancements in power wheelchair joystick technology: effects of isometric joysticks and signal conditioning on driving performance [corrected] [published erratum appears in AM J PHYS MED REHABIL 2006 Oct;85(10):861].
OBJECTIVE: An estimated 125,000 Americans with movement disorders that preclude independent mobility in a power wheelchair could benefit from improved control devices. We developed variable gain algorithm (VGA) software for our isometric joystick (IJ) that allows it to emulate a commercially availab...
| Published in: | American Journal of Physical Medicine & Rehabilitation Vol. 85; no. 8; pp. 631 - 640 |
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| Main Authors: | , , , , |
| Format: | pictorial research tables/charts Journal Article |
| Published: |
Lippincott Williams & Wilkins
Aug2006
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=106159779&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 106159779 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 08949115 44N jtl: American Journal of Physical Medicine & Rehabilitation issn: 08949115 maglogo: N pubinfo: dt: Aug2006 vid: 85 iid: 8 pid: 5086 pub: Lippincott Williams & Wilkins place: Baltimore, Maryland artinfo: ui: 106159779 106159779 2009255007 10.1097/01.phm.0000228519.54763.b4 NLM16865017 106159779 ppf: 631 ppct: 9 formats: tig: atl: Advancements in power wheelchair joystick technology: effects of isometric joysticks and signal conditioning on driving performance [corrected] [published erratum appears in AM J PHYS MED REHABIL 2006 Oct;85(10):861]. aug: au: Dicianno BE Spaeth DM Cooper RA Fitzgerald SG Boninger ML affil: Human Engineering Research Laboratories, University of Pittsburgh, Pittsburgh, Pennsylvania sug: subj: Persons with Disabilities Wheelchair Control Devices Wheelchairs Comparative Studies Data Analysis Software Equipment Design Funding Source Isometric Contraction Movement Disorders Outcome Assessment Reaction Time Software Human ab: OBJECTIVE: An estimated 125,000 Americans with movement disorders that preclude independent mobility in a power wheelchair could benefit from improved control devices. We developed variable gain algorithm (VGA) software for our isometric joystick (IJ) that allows it to emulate a commercially available motion-sensing joystick (MSJ) in performance but retain the unique customizable features of an isometric control. Force sensing algorithm (FSA) software allowed the IJ to function as a simple isometric device. DESIGN: Using a Fitts' Law paradigm, we compared driving performance with floor targets using a standard MSJ and an IJ with both FSA and VGA software in 11 electric power wheelchair users with a variety of impairments. Outcome measures were reaction time (RT), movement time (MT), and driving accuracy (DA). RESULTS: The IJ with FSA had a significantly shorter RT than the MSJ (P < 0.0020). The IJ with FSA had a significantly longer MT than the MSJ to far targets (P < 0.0159). No differences were found between the IJ with VGA and the MSJ with respect to RT or MT. No differences in DA were found among any of the joysticks. CONCLUSIONS: VGA software allowed the IJ to function similarly to the MSJ with respect to RT, MT, and DA. pubtype: Academic Journal doctype: pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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