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ReferencesNavigation arrowAuthorsNavigation arrowMary L. McManus
Jun 18

“ Computer programs emerge as the outcome of complex human processes of cognition, communication and negotiation, which serve to establish the meaningful embedding of the computer system in its intended use context. ”

-- Floyd, 1992, p. 24

 
 

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Mary L. McManus

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Publications by Mary L. McManus (bibliography)

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1988
 
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Nataupsky, Mark, Pope, Alan T., McManus, Mary L. and Burdette, Daniel X. (1988): Workload Evaluations of a Stereo 3-D Computer-Generated Pictorial Primary Flight Display. In: Proceedings of the Human Factors Society 32nd Annual Meeting 1988. pp. 162-163.

“With the advent of digital avionics and cathode ray tube (CRT) displays, the use of computer-generated flight displays has become increasingly prevalent in both commercial and military cockpits. These flight displays, however, typically are renditions of the electromechanical displays that are being replaced. But there is great potential for display enhancement and integration through formats such as pictorial, real-world formats that could enhance situation awareness and reduce crew workload. This study had as its objective the exploration of workload measures in conjunction with a larger study of a computer-generated, integrated pictorial primary flight display presented in stereo and non-stereo modes. Of interest in the workload aspect of the study was the ability to differentiate workload attendant with use of several versions of the pictorial display having alternate implementations of 3-D symbology cues, presented in stereo and non-stereo modes. Both physiological and subjective measures were used with a pilot-in-the-loop flight simulation task. The physiological measure was visually-evoked brain wave potentials; the subjective measure was the Subjective Workload Assessment Technique (SWAT) (Reid, Shingledecker, and Eggemeier, 1981a and Reid, Shingledecker, Clark, and Eggemeier, 1981b). A number of physiological studies have demonstrated the relationship of the P300 component of event-related brain potentials to controlled stimuli (e.g., Zacharias, 1988). Further physiological studies by Kramer, Donchin, and Wickens (In Press) have shown that the amplitude of the P300 can be related to levels of pilot workload. The SWAT is a validated measure of subjective workload. Nataupsky and Abbott (1987) used SWAT to differentiate levels of a pilot's perception of workload in a piloted simulator flight task. The workload portion of the study was accomplished in the following manner. Pilots were initialized on the nominal flight path (as defined within the pictorial display). After approximately 2 seconds, they were suddenly offset to one of eight positions. The sudden display shift was the stimulus to which pilots had been asked to respond with control inputs and was the trigger for the visually-evoked response. Thus, contrary to previous studies conducted at Langley which used secondary tasks to elicit evoked potentials, this study had the primary task as the trigger for the evoked response. The pilots' task was to make the initial pitch and/or roll input necessary to correct back to the nominal flight path. Data was collected on 216 trials for each of eight Air Force pilots. Analysis of the workload data is in progress.”

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Jun 18

“ Computer programs emerge as the outcome of complex human processes of cognition, communication and negotiation, which serve to establish the meaningful embedding of the computer system in its intended use context. ”

-- Floyd, 1992, p. 24

 
 

Featured chapter

Read the fascinating history of Wearable Computing, told by its father, Steve Mann

Read Steve's chapter !

 
 

Latest books

The Social Design of Technical Systems: Building technologies for communities
by Brian Whitworth and Adnan Ahmad

 
Start reading

The Encyclopedia of Human-Computer Interaction, 2nd Ed.
by Mads Soegaard and Rikke Friis Dam

 
Start reading
 
 

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