The neural substrates of script knowledge deficits as revealed by a PET study in Huntington's disease

► The correlation between resting-state brain glucose utilization and performance on script generation and sorting tasks was examined in Huntington's disease. ► A selectively greater impairment for the organizational aspects of scripts was observed. ► Significant negative correlations between script errors and the metabolism of several cortical frontal and posterior regions were found. ► The cortical frontal regions are more crucial in script retrieval and script sequencing than the basal ganglia.