HAMILTON: Ultimately, Dosenbach says this led to a new map of the motor cortex. DOSENBACH: There's two interleaved systems. So it's a checkerboard pattern. It's specific body parts.

The IERs were strongly connected with the supplementary motor area (SMA) and the caudally located cingulate zone of the dorsal anterior cingulate cortex (dACC) and were linked to the insula and ...

More information: Zheng Gan et al, Layer-specific pain relief pathways originating from primary motor cortex, Science (2022). DOI: 10.1126/science.add4391 ...