The role of visual salience in directing eye movements in visual object agnosia
نویسندگان
چکیده
Sabira K. Mannan1, Christopher Kennard1,3 and Masud Husain2,3 Correspondence When we look at a scene our scanning eye movements are not random [1]. Remarkably, different observers look at similar points in a given image. One explanation is that our understanding of the scene controls the paths our eyes take — so called ‘top-down’ control. An alternative possibility is that the visual system uses low-level ‘bottom-up’ features, such as edges, contrast or boundaries, to determine where the eyes land [2–4]. Fixated locations have been shown to contain higher values of ‘low-level’ visual features than non-fixated
منابع مشابه
Modeling eye movements in visual agnosia with a saliency map approach: Bottom-up guidance or top-down strategy?
Two recent papers (Foulsham, Barton, Kingstone, Dewhurst, & Underwood, 2009; Mannan, Kennard, & Husain, 2009) report that neuropsychological patients with a profound object recognition problem (visual agnosic subjects) show differences from healthy observers in the way their eye movements are controlled when looking at images. The interpretation of these papers is that eye movements can be mode...
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ورودعنوان ژورنال:
- Current Biology
دوره 19 شماره
صفحات -
تاریخ انتشار 2009