Journal
NEUROPSYCHOLOGIA
Volume 38, Issue 4, Pages 363-379Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0028-3932(99)00097-4
Keywords
prefrontal cortex; inhibition; negative priming; selective attention; distracter interference; reaction times
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The present study investigated whether lesions to the prefrontal cortex would lead to impaired inhibitory control in selective attention. Patients with uni- and bilateral frontal lobe damage and age-marched control participants were compared in an identity negative priming task involving letter naming. Whereas all control groups revealed robust negative priming and distracter interference. the majority of patients showed positive instead of negative priming and not all of them were more susceptible to interference. These results suggest that frontal lobe lesions disrupt distracter inhibition and cannot be explained in terms of a retrieval deficit. However, the level of interference may not only be determined by inhibition but also by excitation of the target stimulus, (C) 2000 Elsevier Science Ltd. All rights reserved.
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