In the monograph «Kritische und klinische Betrachtungen im Gebiete der Sinnestäuschungen» (1885) and in its Russian version «On pseudohallucinations» (1890) V.Kh. Kandinsky was the first in the world to present a detailed differentiation of clinical forms of false sensory perceptions, specificating simple hallucinations, dream-like hallucinations and two varieties of pseudohallucinations. He...