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End-To-End Deep Neural Network for Salient Object Detection in Complex Environments
Published on: December 15, 2023
Domain knowledge moderates the influence of visual saliency in scene recognition
Katherine Humphrey1, Geoffrey Underwood
1School of Psychology, University Park, University of Nottingham, Nottingham NG7 2RD, UK. lpxkah@psychology.nottingham.ac.uk
British Journal of Psychology (London, England : 1953)
|September 30, 2008
Summary
Eye movement patterns (scanpaths) are linked to memory encoding. While visual saliency guides initial viewing, expert knowledge significantly alters these scanpaths, especially during repeated image viewings.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Visual Perception
Background:
- Scanpath similarity across viewings suggests a link between eye movements and memory encoding.
- Visual saliency influences initial scanpath formation, supporting theories like the saliency map hypothesis.
- Top-down cognitive processes, such as domain expertise, can override bottom-up visual guidance.
Purpose of the Study:
- To investigate the relationship between eye movement sequences (scanpaths) and image memory encoding.
- To determine if domain expertise influences scanpath patterns during image viewing and recognition.
- To examine the interplay between visual saliency and cognitive knowledge in guiding eye movements.
Main Methods:
- Participants viewed and later recognized images, with eye-tracking data recorded.
- Scanpath comparison utilized a string editing algorithm to quantify viewing sequence similarity.
- Domain specialists were tested on images within and outside their area of expertise.
Main Results:
- Visual saliency influenced eye movement patterns and sequences, as predicted.
- The influence of visual saliency on scanpaths was significantly reduced for images within a participant's specialist domain.
- This expertise-driven modulation of scanpaths remained consistent even with repeated stimulus exposure.
Conclusions:
- While visual saliency plays a role, domain expertise profoundly shapes eye movement strategies during image viewing and memory tasks.
- Scanpath patterns are not solely dictated by low-level visual features but are modulated by high-level cognitive factors.
- The findings highlight the dynamic interaction between perception and cognition in memory encoding and retrieval.
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