THE ABSTRACT:
Aristotle’s naturalistic and rationalistic interpretation of the nature and function of ‘sleep’ (ὕπνος) and ‘dreams’ (ἐνύπνια) is developed out of his concepts of the various parts (μόρια) or faculties/powers (δυνάμεις) of the soul, and especially the functions of cognitive process: (a) sense/sensation (αἴσθησις), (b) imagination (φαντασία), (c) memory (μνήμη), and (d) mind/intellect (νοῦς). Sleep “is a sort of privation (στέρησις) of waking (ἐγρήγορσις)“, and dreams are not metaphysical phenomena. The purpose of this paper is to provide a new reading of Aristotle’s ‘theory of sleep and dreams’ through its connection to modern and contemporary research. To be more specific, through this analysis we shall try to present that many of the Stageirite philosopher’s observations and ideas on the phenomenon of sleep and dreaming have been verified by current experimental research (e.g. Psychology, Psychophysiology, Neurobiology, Cognitive Science etc.).