On Oct 3, 2021 10:57 AM, professor rat <pro2rat@yahoo.com.au> wrote .

     Another scenario (Ross 1992: 16) involves injecting nanomachines
     into the bloodstream that would replace each brain and sensory
     neuron with a functionally equivalent, artificial structure.

   Movie:.  The President's Analyst. (1967)
   https://youtu.be/s2NNZdigSXg
   Excellent cast.