Age-related differences in working memory: ERPs reveal age-related delays in selection- and inhibition-related processes.Faulty inhibition is implicated in age-related working memory decline.  ERP signs of selection and inhibition of items in working memory (WM) are, respectively, a cue-locked parietal positivity (∼ 350 ms) and a probe-locked frontal negativity (∼ 520 ms).  To determine when in the older age range differences in selective and inhibitory processes might occur, ERPs were recorded in a WM task from 20 young (20-28), 20 young-old (60-70), and 20 old-old (71-82) adults.  Although there were no topographic differences among the age groups, the prolonged PI and associated ERPs suggest a relative age-related deficit in inhibition.
ERPs
Age-related differences in working memory: ERPs reveal age-related delays in selection- and inhibition-related processes.Faulty inhibition is implicated in age-related working memory decline.  ERP signs of selection and inhibition of items in working memory (WM) are, respectively, a cue-locked parietal positivity (∼ 350 ms) and a probe-locked frontal negativity (∼ 520 ms).  To determine when in the older age range differences in selective and inhibitory processes might occur, ERPs were recorded in a WM task from 20 young (20-28), 20 young-old (60-70), and 20 old-old (71-82) adults.  Although there were no topographic differences among the age groups, the prolonged PI and associated ERPs suggest a relative age-related deficit in inhibition.
ERP