W.H.R.Rivers, Review of O. Külpe's 'Grundriss d… (1894)
“ The section on the theory of centrally excited sensations is little more than an attempt to explain by having recourse to vague physiological assumptions. This is to a certain extent the logical outcome of the author’s standpoint that psychology has only to do with conscious processes; one is frequently reduced to the dilemma of having to seek an explanation either in unconscious mental processes or in purely physiological processes. ”
