Faull is of Ngāti Rāhiri and Te Āti Awa descent.[2] He grew up with four brothers in Tikorangi, Taranaki, where his parents, Phyllis Thelma Faull (née Rogers) and Wilfred Lewis Faull, had a general store.[3][4][5] He attended the University of Otago, earning a Bachelor's of Science in 1967 and a Bachelor of Medicine (MB ChB) in 1970. He followed that with a PhD in neuroanatomy (1975)[6] and Doctor of Science (DSc) in neuroscience (1994), both from the University of Auckland.[7] Faull and his wife, Diana, have five children.[3]
Research
Faull is noted for his research into brain diseases, particularly Alzheimer's, Parkinson's and Huntington's diseases. In 2007, his team at the University of Auckland proved that the brain can repair itself by generating new cells, debunking the theory that, once fully formed, the human brain could only degenerate.[8][9] In 2009, he established the University of Auckland's Centre for Brain Research (CBR), to facilitate interactions among different groups and to promote new treatments for brain disease.[4]
In recognition of his work establishing links between the Māori community and neuroscience Faull was honoured in 2023 in a ceremony in which he received a kōrowai (cloak) and tokotoko (carved stick).[2]