Report summary

University of Michigan–ann Arbor Department of Neurosurgery in 2021-2023 reads as a 26-PI network with 53 internal PI collaborations. The dominant subject mix is Medicine as the leading field (61% of slots across 25 PIs; 25 labels), Neurology as the leading subfield (20% of slots across 13 PIs; 13 labels), and Glioma Diagnosis and Treatment as the leading topic (6% of slots across 5 PIs; 5 labels). That is promising: collaboration is not just one large hairball, and the leading breakdown groups cover 13 PIs across distinct clusters. The leading PI names are Paul Park (14.1 weighted works; Spine and Intervertebral Disc Pathology, Spinal Fractures and Fixation Techniques); Aditya S. Pandey (12.8 weighted works; Intracranial Aneurysms: Treatment and Complications, Acute Ischemic Stroke Management). The most visible ties are Pedro R. Löwenstein and María G. Castro (32 shared works, weight 15.3). The leading breakdown groups are group 1 with 8 PIs, 8 internal connections, weight 37.8, around Neurology, Epidemiology, Cellular and Molecular Neuroscience, led by Aditya S. Pandey, Guohua Xi, Richard F. Keep.