Progressive attenuation of visual global precedence across healthy aging and Alzheimer’s disease

ABSTRACT: In the perception of Navon hierarchical stimuli (e.g., large letters made up of small letters), young adults identify large letters faster than small ones (known as ‘global advantage’) and identify more slowly small letters when they form a different (or incongruent) large letter (known as ‘unidirectional global interference’). Since some global/local perceptual alterations might be occurring with aging, we investigated whether these effects vary across healthy aging and Alzheimer’s disease (AD). Here, the Navon letter task was administered to 26 healthy elderly (HE), 21 adults with mild cognitive impairment (MCI), and 26 adults with AD. The same task was administered 1 year later, and different neuropsychological variables were incorporated into the analyses. The cross-sectional study rev

SUBMITTER: Alvarez-San Millan A 

PROVIDER: S-EPMC9530062 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature