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  • Title: Influence of centrality and distinctiveness of actions on script sorting and ordering in patients with frontal lobe lesions.
    Author: Allain P, Le Gall D, Etcharry-Bouyx F, Forgeau M, Mercier P, Emile J.
    Journal: J Clin Exp Neuropsychol; 2001 Aug; 23(4):465-83. PubMed ID: 11780946.
    Abstract:
    In order to further investigate script knowledge in patients with frontal lobe lesions (FP), 30 participants with frontal brain damage, 14 controls with posterior brain damage (PC) and 30 normal controls (NC) were asked to sort script actions with various degrees of centrality and distinctiveness according to the script to which they belonged and their order of execution. Actions were given in 3 conditions: scripts with headers (SH), scripts without headers (SwH) and scripts with distractor header (SDH). Results confirmed the dual dissociation we observed in a previous study (Allain, Le Gall, Etcharry-Bouyx, Aubin, & Emile, 1999). Twelve FP made numerous errors in sequencing actions regardless of the conditions, but rejected the irrelevant title. Fourteen FP made few sequencing errors but used the irrelevant title. The last 4 FP performed as well as the PC and NC in every condition. Sorting errors made by the FP mainly concerned actions with low levels of centrality and distinctiveness. These data are consistent with the view that frontal lobe lesions selectively impair the syntactic component of script representation without affecting its semantic component.
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