shamanistic "regression" and its links to artistic creation

According to Wilfred Bion, the paranoid-schizoid position (originally prominent as infantile consciousness) is the very source of creativity. Creativity in adults involves a movement of consciousness between PS<--> D (where "D" signifies the 'depressive position' – ie. the mature state of rational, adult consciousness, in which one recognises that others are also real, and that one must therefore accommodate them). PS<-->D describes the very process of creativity itself. One can strongly hypothesise that this movement implies a shifting emphasis between lizard brain consciousness and the consciousness of the higher mind. In creative persons the result of this shift is to weave the two components of mental activity together to produce Art. Lizard brain provides a "magical thinking" element, which is a component of creativity. Yet this means nothing except perhaps "madness" unless the higher brain, in turn, interprets the creative impulses and gives them recognisable meaning.