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Behavioral, event-related potential (ERP), and EEG measures were obtained to describe more fully the relationship between brain activity and arousal level during the process of falling asleep. In addition to standard polysomnographic measures, tones were presented at random intervals throughout two nights to each of nine subjects. Subjects were instructed(More)
In this report, a sleep deprivation/multiple arousal paradigm was used in which response time (RT) and respiratory and electroencephalographic (EEG) measures were combined with a continuous behavioral index of arousal (a deadman switch) and frequently repeated Stanford Sleepiness Scale ratings to examine the process of falling asleep. Sleep was defined(More)
The EEG in REM sleep is markedly different from the EEG in non-REM sleep; however, very little research has been conducted analyzing the transition from NREM to REM sleep. The purpose of this study was to describe the changes in EEG power spectra that coincide with significant physiological events throughout the transition from stage 2 to REM sleep.(More)
OBJECTIVE To be the first to compare EEG power spectra during sleep onset REM periods (SOREMP) and sleep onset NREM periods (NREMP) in normal individuals and relate this to dream appearance processes underlying these different types of sleep periods. METHODS Eight healthy undergraduates spent 7 consecutive nights in the sleep lab including 4 nights for(More)
The sleep-onset period of 10 drug-free patients with narcolepsy-cataplexy and 10 normals matched for age and gender was investigated using the multiple sleep latency test to elicit episodes of intentional sleep onset. Spectral analyses were calculated for delta, theta, alpha, sigma, and beta frequencies using 5-second epochs beginning at lights-out and(More)
Our goal is to develop an English version of the Dream Property Scale (DPS-E) based on the original normed scale in Japan (DPS-J). Factor analyses extracted four factors (Emotionality, Rationality, Activity, and Impression) and its factor structure was apparently similar to the DPS-J. The DPS-E was also shown to be related to EEG power spectral values.(More)
OBJECTIVE The aims of this study were (1) to characterise the extent and nature of disrupted sleep in individuals with long-term sleep complaints subsequent to mild traumatic brain injury (MTBI), and (2) to determine whether sleep disturbances in MTBI subjects were more characteristic of psychophysiological, psychiatric, or idiopathic insomnia. METHODS(More)
An increasing number of studies have been examining non-pharmacological methods to improve the quality of sleep, including the use of music and other types of auditory stimulation. While many of these studies have found significant results, they suffer from a combination of subjective self-report measures as the primary outcome, a lack of proper controls,(More)