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Methods of head fixation for awake marmoset fMRI. (A) A completely non-invasive design that makes use of 3D-printed helmets contoured specifically to each marmoset’s head morphology. (B) A chamber-based fixation system in which a 3D-printed head chamber is surgically implanted, then affixed within a clamping system. (C) and (D) head motion (translation) for each respective design.
