Causal relationships between alzheimer’s disease genetics and brain connectivity alterations: a multi-modal mendelian randomization study with transcriptomic validation of 191 rs-fMRI and 635 DTI neuroimaging traits - Junjun Ji; Zhifan Li; Abao Xing; Gang Luo; Xiaobing Zhai; Wei Xu; Junrong Li; Tao Tan; Ruihong Jia; Yan Yan; Xianbin Zhang; Long Wang; et al. (Brain Imaging and Behavior, 2026)