PSYC 323 Lecture Notes - Lecture 3: Illusory Contours
17 Oct 2016
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To achieve behavioural goals, action must be directed to only one object at a time. Attention, then may be the mechanism that selects particular objects (more precisely their internal representation) to guide action. Examined attention to objects superimposed in the same locus. Replicated duncan"s 2 object cost when no physical differences between one and two object displays. 2 conditions: same object: identify which apex was higher for red object, different objects: identify which apex was higher for inner edge of red objects. Paying attention to a single object is much more beneficial than paying attention to 2 objects. Experiment 1: occluder in the object: we tend to still assume the object as a whole even with the occlude. Experiment 2: no contours vs illusory contours. Other problems with space-based accounts: neglect patients may copy right side of objects falling on neglected side.
