I recall this. The original idea is from decades ago but perhaps you read it in the Quanta article here https://www.quantamagazine.org/why-the-brains-connection

I recall this. The original idea is from decades ago but perhaps you read it in the Quanta article here https://www.quantamagazine.org/why-the-brains-connections-to-the-body-are-crisscrossed-20230419/ https://www.quantamagazine.org/why-the-brains-connections-to... or perhaps that will lead you to what you want.