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Cognitive Task Analysis for Prospective Usability Evaluation in Computer-Assisted Surgery

  • Armin Janß
  • Wolfgang Lauer
  • Klaus Radermacher
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4799)

Abstract

Within the framework of the INNORISK (Innovative Risk Analysis Methods for Medical Devices) project, a twofold strategy is pursued for prospective usability assessment of Computer-Assisted Surgery (CAS) systems in the context of a risk management process. In one approach ConcurTaskTrees are applied to accomplish a hierarchical task analysis including temporal relations. In the other approach, based on the Cognitive Task Analysis method CPM-GOMS (Cognitive Perceptual Motor – Goals Operators Methods Selection Rules), a new technique for detecting potential contradictions and conflicts in the use of concurrent cognitive resources is generated. Within this model-based approach, extrinsic and intrinsic performance shaping factors are comprised, taking into account the specific context of modern surgical work systems. Additionally, a computer assisted usability analysis tool including the above-mentioned methods is developed to provide support for small and medium-sized enterprises in early stages of the design development process of risk sensitive Human-Machine-Interfaces in medical systems.

Keywords

Cognitive Task Analysis ConcurTaskTree Human Error CAS-System Cognitive Workload Model-based User Interface Design 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Armin Janß
    • 1
  • Wolfgang Lauer
    • 1
  • Klaus Radermacher
    • 1
  1. 1.Chair of Medical Engineering, Helmholtz-Institute for Biomedical Engineering, RWTH Aachen University, Pauwelsstr. 20, 52074 AachenGermany

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