Therefore, its known narrative elements are not a part of the Doctor Who universe as we, on this Wiki, choose to define it. It may have been the basis for a similar story in another medium, however — and that story may indeed be valid.
The Cerebroids was an unproduced story to be written by Charlotte and Dennis Plimmer for Season 8. Scripts for the story were commissioned on 24 June 1970, but the serial was abruptly abandoned five days later. (REF: DWMSE 2)