Age-related differences in the neural correlates of remembering time-based intentions

► We compare the ERP modulations related to time-based PM in younger and older adults. ► The prefrontal ERP modulation was observed in younger but not in older adults. ► Posterior ERP modulations were mainly expressed in older than in younger adults. ► In older adults, greater frontal P3 amplitude was related to poorer PM performance. ► Older adults had fewer resources to maintain the intentions active in memory.