neurobiotaxis

noun

neu·​ro·​bio·​tax·​is -ˌbī-ō-ˈtak-səs 

plural neurobiotaxes -ˌsēz 

: a hypothetical directed and oriented shift of nerve cells in the course of phylogeny toward a region of maximum stimulation that has been held to explain cephalization and brain evolution

neurobiotactic

-ˈtak-tik 

adjective

or neurobiotactical

-ti-kəl