Ageing involves significant neurophysiological changes that are both systematic while at the
same time exhibiting divergent trajectories across individuals. These changes underlie
cognitive impairments in elderly while also affecting the response of aged brains to
interventions like transcranial direct current stimulation (tDCS). While the cognitive benefits
of tDCS are more variable in elderly, older adults also respond differently to stimulation
protocols compared to young adults. The age-related neurophysiological changes …