Abstract

PARRA, Alejandro. Associations between slep quality, schizotypy and unusual perceptual experiences (PPE). Suma Psicol. [online]. 2013, vol.20, n.2, pp.241-249. ISSN 0121-4381.  https://doi.org/10.14349/sumapsi2013.1115.

There are differences in terms of the need to sleep in the general population. Some studies suggest that short sleepers are likely to produce hallucinations, and that seems to have a possible relationship between sleep duration, hallucinations and other anomalous experiences during daytime. This study focuses on understanding the aetiology of certain unusual perceptual experiences (PPE), by exploring the relationship between sleep duration, schizotypy, and sleep quality. We classified a sample of the general population in sleep duration into three groups: short period (n = 202, 46%), medium (n = 103, 23%) and long (n = 131, 30%) by means of a Pittsburgh Scale item. They also completed the Inventory of Feelings and Experiences Oxford-Liverpool (O-LIFE) and the Unusual Perceptual Experiences Questionnaire. The results suggest that individuals with a short sleep period experience less memory and sharpness of images of dreams, albeit they have an increase in daytime unusual perceptual experiences. Sleep quality is directly related to some unusual experiences and schizotypy, which appears to be partially modulated by sleep duration.

Keywords : unusual perceptual experiences; sleep duration; schizotypy; slep qualyty.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )