What can an echocardiographer see in briefly presented stimuli? Perceptual expertise in dynamic search.

Cognitive Research: Principles and Implications
A J CarriganM W Wiggins

Abstract

Experts in medical image perception are able to detect abnormalities rapidly from medical images. This ability is likely due to enhanced pattern recognition on a global scale. However, the bulk of research in this domain has focused on static rather than dynamic images, so it remains unclear what level of information that can be extracted from these displays. This study was designed to examine the visual capabilities of echocardiographers-practitioners who provide information regarding cardiac integrity and functionality. In three experiments, echocardiographers and naïve participants completed an abnormality detection task that comprised movies presented on a range of durations, where half were abnormal. This was followed by an abnormality categorization task. Across all durations, the results showed that performance was high for detection, but less so for categorization, indicating that categorization was a more challenging task. Not surprisingly, echocardiographers outperformed naïve participants. Together, this suggests that echocardiographers have a finely tuned capability for cardiac dysfunction, and a great deal of visual information can be extracted during a global assessment, within a brief glance. No relationship was ...Continue Reading

References

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Methods Mentioned

BETA
imaging technique

Software Mentioned

JASP
Statistical Software for the Social Sciences ( SPSS
PsychToolbox
MATLAB

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