Dissociable spatial memory systems revealed by typical and atypical human development.

ABSTRACT: Rodent lesion studies have revealed the existence of two causally dissociable spatial memory systems, localized to the hippocampus and striatum that are preferentially sensitive to environmental boundaries and landmark objects, respectively. Here we test whether these two memory systems are causally dissociable in humans by examining boundary- and landmark-based memory in typical and atypical development. Adults with Williams syndrome (WS)-a developmental disorder with known hippocampal abnormalities-and typical children and adults, performed a navigation task that involved learning locations relative to a boundary or a landmark object. We found that boundary-based memory was severely impaired in WS compared to typically-developing mental-age matched (MA) children and chronological-age mat

SUBMITTER: Julian JB 

PROVIDER: S-EPMC6391167 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature