The confirmation of viral injection was achieved through MRI and histological analysis of the AAV injection area in monkey A. The left panel shows an MRI image after the co-infusion of contrast agent and AAVs, along with a corresponding histological image of the matching region. The yellow arrow indicates the LHA region. The right panel displays an enlarged landmark of the injection area, with black dotted lines outlining brain subregions and red dotted lines indicating the AAV injection site. CN, caudate nucleus; cw, cerebral white matter; DG, dentate gyrus; Gpe, globus pallidus (external division); Gpi, globus pallidus (internal division); H2, field H2 (of Forel); Hipp, hippocampus; Hthal, hypothalamus; ic, internal capsule; opt, optic tract; Put, putamen; and Thal, thalamus.
