Influence of Suggestion and Subjects' Prior Knowledge in Research on Sensory Deprivation

Science  19 Jan 1962:
Vol. 135, Issue 3499, pp. 211-212
DOI: 10.1126/science.135.3499.211


Several investigators have reported that normal human subjects placed in a dark, quiet room for several hours undergo a variety of hallucinatory experiences; these are typically attributed to extended periods of reduced sensory input. In the present experiment, similarly dramatic subjective experiences occurred within 1 hour when subjects were told of the possibility and appropriateness of such phenomena.