Preserved left and upper visual field advantages in older adults' orienting of attention.

Lateralization of the distribution of attentional function in the brain is asserted to lead to asymmetry in attentional allocation. This is expressed in the phenomenon of pseudoneglect, in which line and object bisection judgments indicate left visual field (and presumably right hemisphere) dominance. Several studies indicate that this asymmetry is not found in old age, which is taken as an indication of decline in attentional function with aging.