Older, non-demented apolipoprotein ε₄ carrier males show hyperactivation and structural differences in odor memory regions: a blood-oxygen-level-dependent and structural magnetic resonance imaging study.

"Disclosure statement: The authors have no actual or potential conflicts of interest."

"This study is supported by the National Institutes of Health (grant numbers R01AG004085-26 and R01AG062006-01) from the National Institute on Aging (to C.M.). This content is solely the responsibility of the authors and does not necessarily represent the official views of the granting agency. We would like to thank the members of the Lifespan Human Senses Laboratory for all of their assistance, especially Aaron Jacobson, Lori Haase, Erin Green, MiRan Wang, and Vincent Rupp for their contributions to data collection and analysis. We gratefully acknowledge the assistance of Dr Thomas Liu and the UCSD Center for fMRI. Eleni A. Kapoulea: Conceptualization, Methodology, Formal analysis, Writing - original draft, Visualization. Claire Murphy: Conceptualization, Methodology, Resources, Writing - review & editing, Supervision, Project administration, Funding acquisition."