1. Kretschmer , Textbook of Medical Psychology, translated by Strauss E. B.
2. Development of Behaviour Patterns and Myelinization of Tracts in the Nervous System;Arch, of Neurol, and Psychiat.,1932
3. Idem , “Eidetic Imagery”, Brit. Journ. Psychol., Pt. 2, 1924.
4. On the Nature of Inhibition: a Review.∗
5. Pavlov, in his description of conditioned reflexes and their application to psychopathology, definitely stresses the processes as taking place in the same functional plane, but he does in some of his more recent writings, differentiate the cortical layers. (in the other hand there are various schools of psychology which regard “the present” as the most important factor.