Cortical activity modulations underlying age‑related performance differences during posture–cognition dual tasking (original) (raw)

challenging postural conditions presumably related to corti-cal representations of changing sensory conditions in pos-tural tasks. Theta rhythms, on the other hand, were more responsive to cognitive task difficulty in both groups, with more pronounced increases in younger subjects which may underlie neural correlates of high-level cognitive computations including encoding and retrieval. Gamma oscillations also increased in the elderly primarily over central and central-parietal cortices during challenging postural tasks, indicating increased allocation of attentional sources to postural tasks.