Topographical and cell type-specific connectivity of rostral and caudal forelimb corticospinal neuron populations
Carmona et al. comprehensively characterize the connectivity of two distinct forelimb corticospinal populations within the brain and spinal cord. Both groups preferentially target inhibitory spinal neurons but are selective in the specific neuronal subtypes they innervate. These corticospinal populations form axon collaterals in similar brain regions but receive different inputs.