Visual objects and their identity conditions

old_uid15122
titleVisual objects and their identity conditions
start_date2015/02/18
schedule16h-18h
onlineno
detailsCommentator: Uriah Kriegel (CNRS, IJN)
summaryAccording to the traditional view on visual objects, perceptual system represents objects in the environment as bundles of features and locations. This initially plausible idea is contested within the contemporary psychology and philosophy of perception, where it is claimed that visual system can “pick out” objects merely as numerically different “this” and “that” in abstraction from their qualities. In the presentation, I consider how different views on visual object affect their identity conditions. In particular, I investigate whether it is needed to postulate an additional, purely individualizing element, known in the philosophical tradition as ‘thisness’, within the visual objects’ structures. I argue that while synchronic identity criterion for visual objects can be formulated without invoking the notion of “thisness”, the phenomenon of asymmetry of errors observed in Multiple Object Tracking experiments strongly suggests that a reference to “thisness” is needed to provide a proper identity criterion in diachronic contexts.
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