@article{ref1,
title="Perceptual distortions and hallucinations reported during the course of sleep deprivation",
journal="Perceptual and motor skills",
year="1989",
author="Babkoff, H. and Sing, H. C. and Thorne, David R. and Genser, S. G. and Hegge, F. W.",
volume="68",
number="3",
pages="787-798",
abstract="Subjects worked 30 to 45 min. of each hour for either 48 (n = 2) or 72 hr. (n = 8) without sleep. The frequency of reported visual task-related perceptual distortions and hallucinations showed both a linear increasing component and a strong circadian component. Perceptual distortions were most frequent in the late night-early morning hours (0400) and least frequent in the late afternoon-early evening hours (1600-2000).<p /> <p>Language: en</p>",
language="en",
issn="0031-5125",
doi="10.2466/pms.1989.68.3.787",
url="http://dx.doi.org/10.2466/pms.1989.68.3.787"
}