Trends in Cognitive Sciences
December 1, 2016
Jennifer Windt, Tore Nielsen, Evan Thompson
Consciousness is often said to disappear in deep, dreamless sleep. We argue that this assumption is oversimplified. Unless dreamless sleep is defined as unconscious from the outset there are good empirical and theoretical reasons for saying that a range of different types of sleep experience, some of which are distinct from dreaming, can occur in all stages of sleep. We introduce a novel...
Schizophrenia Bulletin
June 29, 2016
Flavie Waters, Jan Dirk Blom, Thien Thanh Dang‐Vu et al.
By definition, hallucinations occur only in the full waking state. Yet similarities to sleep-related experiences such as hypnagogic and hypnopompic hallucinations, dreams and parasomnias, have been noted since antiquity. These observations have prompted researchers to suggest a common aetiology for these phenomena based on the neurobiology of rapid eye movement (REM) sleep. With our recent...
Consciousness and Cognition
June 23, 2016
Christina Wong, Reza Amini, Joseph De Koninck
A computer program was developed in an attempt to differentiate the dreams of males from females. Hypothesized gender predictors were based on previous literature concerning both dream content and written language features. Dream reports from home-collected dream diaries of 100 male (144 dreams) and 100 female (144 dreams) adolescent Anglophones were matched for equal length. They were first...
Consciousness and Cognition
April 1, 2016
Clemens Speth, Jana Speth
We lose waking consciousness spontaneously and regularly over the circadian cycle. It seems that every time we fall asleep, reflective thinking gradually gives way to our interactions with an imaginary, hallucinatory world that brings multimodal experiences in the absence of adequate external stimuli. The present study investigates this transition, proposing a new measure of hallucinatory...
Sleep Medicine
April 1, 2016
Alexandra D Pérusse, Joseph De Koninck, Maude Pedneault-Drolet et al.
The dream activity of patients with primary insomnia (PI) has rarely been studied, especially using in-laboratory dream collection, although dreams could be linked to their state of hyperarousal and their negative waking experiences. The objective of the study was to compare patients with PI and good sleeper controls (GSCs) in terms of dream recall frequency and dream content. Polysomnography...
Consciousness and Cognition
April 1, 2016
Tracey L. Kahan, Stephanie Claudatos
Self-ratings of dream experiences were obtained from 144 college women for 788 dreams, using the Subjective Experiences Rating Scale (SERS). Consistent with past studies, dreams were characterized by a greater prevalence of vision, audition, and movement than smell, touch, or taste, by both positive and negative emotion, and by a range of cognitive processes. A Principal Components Analysis of...
Psicologia Teoria e Pesquisa
December 10, 2015
Roque Tadeu Gui, Vera Lúcia Decnop Coelho
A matriz do sonhar social é um dispositivo criado com a finalidade de apreender o significado social dos sonhos. Buscamos avaliar sua aplicação no contexto brasileiro e cogitamos sobre suas potencialidades em processos de intervenção psicológica. Foram realizados encontros de compartilhamento de sonhos com dois grupos: 14 profissionais de gestão de pessoas de uma instituição financeira nacional...
Journal of Sleep Research
December 1, 2015
Bastien Herlin, Smaranda Leu-Semenescu, Charlotte Chaumereuil et al.
To determine whether non-dreamers do not produce dreams or do not recall them, subjects were identified with no dream recall with dreamlike behaviours during rapid eye movement sleep behaviour disorder, which is typically characterised by dream-enacting behaviours congruent with sleep mentation. All consecutive patients with idiopathic rapid eye movement sleep behaviour disorder or rapid eye...
Consciousness and Cognition
December 1, 2015
Aline Gauchat, Jean R Séguin, Esther McSween-Cadieux et al.
Studies on children's recurrent dreams have been largely anecdotal and based on adults' recollections of dreams experienced during childhood. We collected 102 reports of recurrent dreams from a sample of young adolescents aged between 11 and 15years and scored the narratives using a range of content measures, including in relation to the threat simulation theory (TST) of dreaming. The most...
Neuroimage
September 1, 2015
Ju Lynn Ong, Danyang Kong, Tiffany T Y Chia et al.
Spontaneous eye-closures that herald sleep onset become more frequent when we are sleep deprived. Although these are typically associated with decreased responsiveness to external stimuli, it is less clear what occurs in the brain at these transitions to drowsiness and light sleep. To investigate this, task-free fMRI of sleep-deprived participants was acquired. BOLD activity associated with...