highly significantp = 3.9 × 10 −98
TH interneuron density increased steeply toward ventral caudoputamen ( β = 519.7, p = 5.6 × 10 −85 , N (hemispheres) = 13, N (sections) = 299), while SST interneurons showed a more moderate but highly significant ventral increase ( β = 253.9, p = 3.9 × 10 −98 , N (hemispheres) = 12, N (sections) = 276).