Cookies on this website
We use cookies to ensure that we give you the best experience on our website. If you click 'Continue' we'll assume that you are happy to receive all cookies and you won't see this message again. Click 'Find out more' for information on how to change your cookie settings.

Three experiments examined nonspatial extinction in G.K., a patient with bilateral parietal damage. Experiment 1 demonstrated nonspatial extinction (poor detection of a weak relative to a stronger perceptual group), even when the stronger group was less complex than the weaker group. Experiment 2 showed improved report of a letter falling at the location of the stronger group, but explicit judgments of the location of the letter were at chance. Experiment 3 replicated the object-cuing benefit, though G.K. could not discriminate whether a letter fell at the same location as the stronger perceptual group. The data indicate coupling between object- and space-based attention, so that spatial attention is drawn to the location occupied by the winner of object-based competition for selection. In this case, what cues where. This coupling operates implicitly, even when explicit location judgments are impaired.

Type

Journal article

Journal

Psychol Sci

Publication Date

09/2003

Volume

14

Pages

487 - 492

Keywords

Agnosia, Attention, Brain Damage, Chronic, Cerebral Infarction, Cues, Dominance, Cerebral, Extinction, Psychological, Humans, Male, Middle Aged, Neuropsychological Tests, Occipital Lobe, Orientation, Parietal Lobe, Pattern Recognition, Visual, Syndrome, Temporal Lobe