Abstract
In this paper an investigation is reported of neural imaging of the electrocortical activity involved when users monitored dynamic visual interfaces for process failures. For six different visual displays, the form of the display and the directness of mapping between process parameters and visual form were varied. Performance data showed best results with a configural display that mapped the process parameter most important for failure detection to a simple visual property of the display geometry. In this display condition, performance variability was lowest of all conditions and self-reports of users' monitoring strategy revealed the least variability among users. Neuroimaging results for this display condition revealed that changes in electrocortical activity were most consistent between subjects compared with other displays, while still remaining small in absolute terms. These results are interpreted in the light of previous findings in ecological psychology and control of dynamic systems and implications for their use in dynamic visual display design are outlined.
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