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Cognitive Psychology PSYC231

Cognitive Psychology PSYC231. Attention 3 Dr. Jan Lauwereyns, EA619, ext. 5042. Change detection paradigm. Large changes go unnoticed. A: Spotlight. B: Zoom lens. C: Object-based selection. Experiment by Egly et al: spatial cueing with object-based effects.

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Cognitive Psychology PSYC231

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  1. Cognitive PsychologyPSYC231 Attention 3 Dr. Jan Lauwereyns, EA619, ext. 5042

  2. Change detection paradigm • Large changes go unnoticed

  3. A: Spotlight

  4. B: Zoom lens

  5. C: Object-based selection

  6. Experiment by Egly et al: spatial cueing with object-based effects

  7. Experiment by Egly et al: spatial cueing with object-based effects

  8. Experiment by Egly et al: spatial cueing with object-based effects T T Respond as fast as possible: ? T or

  9. Experiment by Egly et al: spatial cueing with object-based effects C A B RT is fastest at position A (cued), but, interestingly: faster for B (non-cued, same object) than for C (non-cued, different object)…

  10. Spatial neglect: usually left neglect following right parietal lesion Left (“language”) brain: Right visual field Right (“image”) brain: Entire visual field

  11. Figure 4.31 (p. 130)Barbell stimuli that Tipper and Behrmann (1996) presented to patients with unilateral neglect. (a) Target lights flashed in the left or right circle resulted in reaction times shown in (b). The reaction times were slower for the left side, which the patient usually neglected. (c) The pattern is rotated until the circles are reversed, as shown in (d), and the reaction times are also reversed, as shown in (e). This shows that the patient’s attentional problem traveled with the object.

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