Riccardo Martinelli

In his 1874 Psychology, Brentano proceeds to a revision of Fechner’s psychophysics. Though Fechner’s formula must be simplified, Brentano’s criticism is not destructive. In fact, like any other mental activity, sensations do admit of a measurable intensity. Later Brentano took back this whole stance and developed a new doctrine of sensory perception. Accordingly, intensity must be completely reduced to spatiality and thus pertains exclusively to sensory appearances...