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https://www.readbyqxmd.com/read/28923293/two-polysomnographic-features-of-rem-sleep-behavior-disorder-clinical-variations-insight-for-parkinson-s-disease
#1
Yun Shen, Yong-Ping Dai, Yi Wang, Jie Li, Kang-Ping Xiong, Cheng-Jie Mao, Jun-Ying Huang, Wei-Feng Luo, Chun-Feng Liu
INTRODUCTION: Loss of REM sleep muscle atonia (RWA) and dream-enactment behavior (DEB) are two associated features of REM sleep behavior disorder (RBD), which is frequently associated with Parkinson's disease (PD). Few studies have examined both DEB and RWA simultaneously in patients with PD. This study aimed to evaluate relationships between RWA, DEB and clinical characteristics of PD. METHODS: We conducted overnight polysomnography in 145 patients with PD. DEB (motor behaviors and/or vocalizations during REM) and increased RWA (IRWA; tonic and phasic chin EMG density ≥ 30% and ≥15%, respectively) were identified...
September 5, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28923157/walter-freeman-iii-and-the-chaotic-nature-of-dreams
#2
Allan Combs, Stanley Krippner
The contributions and life of Walter Freeman III are celebrated through an understanding of the neurodynamics of the dreaming brain. Beginning with a brief review of the universal dynamics of self-organizing systems, this paper turns to an exploration of dreaming through the application of concepts from chaos theory to brain activity during REM-state dreaming. Recent studies of the electrophysiology of the brain during REM state dreaming are reviewed, such as the active inhibition of sensory stimulation and, especially in REM sleep, alterations in the brain's dominant neuromodulatory systems, bombardment of the visual cortex with bursts of PGO activity, increased limbic system activity, and a reduction of activity in the brain's prefrontal regions...
October 2017: Nonlinear Dynamics, Psychology, and Life Sciences
https://www.readbyqxmd.com/read/28900980/-wild-dreams-and-injured-bed-partners-the-rem-sleep-behavior-disorder-as-a-precursor-of-neurodegenerative-disorders
#3
REVIEW
Jan Rémi
No abstract text is available yet for this article.
September 2017: MMW Fortschritte der Medizin
https://www.readbyqxmd.com/read/28899330/rem-sleep-behaviour-disorder-not-just-a-bad-dream
#4
REVIEW
Elie Matar, Simon Jg Lewis
Rapid eye movement (REM) sleep behaviour disorder (RBD) is a parasomnia characterised by the loss of the normal atonia during the REM stage of sleep, resulting in overt motor behaviours that usually represent the enactment of dreams. Patients will seek medical attention due to sleep-related injuries or unpleasant dream content. Idiopathic RBD which occurs independently of any other disease occurs in up to 2% of the older population. Meanwhile, secondary RBD is very common in association with certain neurodegenerative conditions...
September 18, 2017: Medical Journal of Australia
https://www.readbyqxmd.com/read/28890381/the-link-between-parkinson-s-disease-and-rapid-eye-movement-sleep-behavior-disorder-with-dream-enactment-possible-implications-for-early-rehabilitation
#5
Brian P Johnson, Kelly P Westlake
The purpose of this paper is twofold. First, to inform readers of the link between the loss of motor inhibition during rapid eye movement (REM) sleep dreaming, diagnosed as REM sleep behavior disorder (RBD), and the future onset of neurodegenerative disorders, such as Parkinson's Disease and dementia with lewy bodies. It has been reported that motor disinhibition during rapid eye movement sleep often precedes onset of these disorders by years or even decades. Second, to consider that identification of RBD and the early involvement of rehabilitation and/or development of home exercise plans may aid in prolonging and even increasing function, independence, and quality of life should such neurodegenerative disorders develop later in life...
September 7, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28886481/identifying-sleep-spindles-with-multichannel-eeg-and-classification-optimization
#6
Ning Mei, Michael D Grossberg, Kenneth Ng, Karen T Navarro, Timothy M Ellmore
Researchers classify critical neural events during sleep called spindles that are related to memory consolidation using the method of scalp electroencephalography (EEG). Manual classification is time consuming and is susceptible to low inter-rater agreement. This could be improved using an automated approach. This study presents an optimized filter based and thresholding (FBT) model to set up a baseline for comparison to evaluate machine learning models using naïve features, such as raw signals, peak frequency, and dominant power...
September 1, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28846572/sleep-disorders-among-holocaust-survivors-a-review-of-selected-publications
#7
Ido Lurie
After World War II, traumatic after effects often caused persistent sleep disorders for Holocaust survivors (HSs). This is a review of studies reporting on sleep disturbances and nightmares (as primary or secondary outcomes) among HSs between 1939 and 2015, conducted in various countries and contexts (clinical settings, pension claims, community surveys, sleep laboratories). Most studies revealed various sleep disturbances among HSs. Some studies found those disturbances in the absence of clinical disorders...
September 2017: Journal of Nervous and Mental Disease
https://www.readbyqxmd.com/read/28835455/observational-study-of-sleep-disturbances-in-advanced-cancer
#8
Andrew Neil Davies, Shuchita D Patel, Amanda Gregory, Bernadette Lee
OBJECTIVES: To determine the prevalence of nightmares, sleep terrors and vivid dreams in patients with advanced cancer (and the factors associated with them in this group of patients). METHODS: The study was a multicentre, prospective observational study. Participants were patients with locally advanced/metastatic cancer, who were under the care of a specialist palliative care team. Data were collected on demographics, cancer diagnosis, cancer treatment, current medication, performance status, sleep quality (Pittsburgh Sleep Quality Index), dreams and nightmares, and physical and psychological symptoms (Memorial Symptom Assessment Scale-Short Form)...
August 23, 2017: BMJ Supportive & Palliative Care
https://www.readbyqxmd.com/read/28828641/sleep-and-dreaming-in-posttraumatic-stress-disorder
#9
REVIEW
Katherine E Miller, Janeese A Brownlow, Steve Woodward, Philip R Gehrman
PURPOSE OF REVIEW: Sleep disturbances are core features of posttraumatic stress disorder (PTSD). This review aims to characterize sleep disturbances, summarize the knowledge regarding the relationships between trauma exposure and sleep difficulties, and highlight empirically supported and/or utilized treatments for trauma-related nightmares and insomnia. RECENT FINDINGS: Trauma-related nightmares and insomnia, and other sleep disorders, are frequently reported among trauma survivors...
August 22, 2017: Current Psychiatry Reports
https://www.readbyqxmd.com/read/28810072/dreamless-the-silent-epidemic-of-rem-sleep-loss
#10
Rubin Naiman
We are at least as dream deprived as we are sleep deprived. Many of the health concerns attributed to sleep loss result from a silent epidemic of REM sleep deprivation. REM/dream loss is an unrecognized public health hazard that silently wreaks havoc with our lives, contributing to illness, depression, and an erosion of consciousness. This paper compiles data about the causes and extent of REM/dream loss associated with commonly used medications, endemic substance use disorders, rampant sleep disorders, and behavioral and lifestyle factors...
August 15, 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28777174/rapid-eye-movement-sleep-behavior-disorder-and-other-rapid-eye-movement-sleep-parasomnias
#11
Birgit Högl, Alex Iranzo
PURPOSE OF REVIEW: The most common rapid eye movement (REM) parasomnia encountered by neurologists is REM sleep behavior disorder (RBD), and nightmares are so frequent that every neurologist should be able to differentiate them from the dream enactment of RBD. Isolated sleep paralysis is relatively common and is often mistaken for other neurologic disorders. This article summarizes the current state of the art in the diagnosis of RBD, discusses the role of specific questionnaires and polysomnography in the diagnosis of RBD, and reviews recent studies on idiopathic RBD as an early feature of a synucleinopathy, secondary RBD, and its management...
August 2017: Continuum: Lifelong Learning in Neurology
https://www.readbyqxmd.com/read/28729438/electrophysiological-evidence-that-the-retrosplenial-cortex-displays-a-strong-and-specific-activation-phased-with-hippocampal-theta-during-paradoxical-rem-sleep
#12
Bruna Del Vechio Koike, Kelly Soares Farias, Francesca Billwiller, Daniel Almeida-Filho, Paul-Antoine Libourel, Alix Tiran-Cappello, Régis Parmentier, Wilfredo Blanco, Sidarta Ribeiro, Pierre-Herve Luppi, Claudio Marcos Queiroz
It is widely accepted that cortical neurons are similarly more activated during waking and paradoxical sleep (PS; aka REM) than during slow-wave sleep (SWS). However, we recently reported using Fos labeling that only a few limbic cortical structures including the retrosplenial cortex (RSC) and anterior cingulate cortex (ACA) contain a large number of neurons activated during PS hypersomnia. Our aim in the present study was to record local field potentials and unit activity from these two structures across all vigilance states in freely moving male rats to determine whether the RSC and the ACA are electrophysiologically specifically active during basal PS episodes...
August 16, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28715599/dreamlike-events-are-correlated-with-the-length-of-sleep-mentation-reports
#13
N Rosenlicht, C Primich, J R McQuaid, T Maloney, I Feinberg
We investigated the relationship between length and dreamlike quality in sleep mentation reports. Reports were obtained by waking subjects at sleep onset (SO) and at 5 and 10 minutes into the second (REMP2) and fourth REM periods (REMP4). Reports were recorded, transcribed, and scored blindly for total word count (TWC) and dreamlike quality as measured by a composite dream scale score (CDS). Dreamlike quality was strongly correlated with TWC; both CDS and TWC scores increased across successively later awakenings...
July 1, 2017: Archives Italiennes de Biologie
https://www.readbyqxmd.com/read/28649389/cases-of-acute-mercury-poisoning-by-mercury-vapor-exposure-during-the-demolition-of-a-fluorescent-lamp-factory
#14
Sang Yoon Do, Chul Gab Lee, Jae Yoon Kim, Young Hoon Moon, Min Sung Kim, In Ho Bae, Han Soo Song
BACKGROUND: In 2015, workers dismantling a fluorescent lamp factory in Korea were affected by mercury poisoning from exposure to mercury vapor. CASE PRESENTATION: Eighteen out of the 21 workers who participated in the demolition project presented with symptoms of poisoning and, of these, 10 had persistent symptoms even at 18 months after the initial exposure to mercury vapor. Early symptoms of 18 workers included a general skin rash, pruritus, myalgia, sleep disturbance, and cough and sputum production...
2017: Annals of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28646790/the-effects-of-individual-biological-rhythm-differences-on-sleep-quality-daytime-sleepiness-and-dissociative-experiences
#15
Yavuz Selvi, Ali Kandeger, Murat Boysan, Nursel Akbaba, Ayca A Sayin, Emine Tekinarslan, Basak O Koc, Omer F Uygur, Vedat Sar
Individuals who differ markedly by sleep chronotype, i.e., morning-type or evening-type also differ on a number of psychological, behavioral, and biological variables. Among several other psychological functions, dissociation may also lead to disruption and alteration of consciousness, which may facilitate dream-like experiences. Our study was aimed at an inquiry into the effects of individual biological rhythm differences on sleep quality and daytime sleepiness in conjunction with dissociative experiences...
June 17, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28638710/nicotine-prevented-learning-and-memory-impairment-in-rem-sleep-deprived-rat-is-modulated-by-dream-protein-in-the-hippocampus
#16
Norlinda Abd Rashid, Hermizi Hapidin, Hasmah Abdullah, Zalina Ismail, Idris Long
INTRODUCTION: REM sleep deprivation is associated with impairment in learning and memory, and nicotine treatment has been shown to attenuate this effect. Recent studies have demonstrated the importance of DREAM protein in learning and memory processes. This study investigates the association of DREAM protein in REM sleep-deprived rats hippocampus upon nicotine treatment. METHODS: Male Sprague Dawley rats were subjected to normal condition, REM sleep deprivation and control wide platform condition for 72 hr...
June 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28628226/the-future-of-dream-science
#17
Kelly Bulkeley
This article describes the future prospects of scientific dream research. Three frontiers of investigation hold special promise: neuroscientific studies of the brain-mind system's activities during sleep (such as during lucid dreaming); systematic analyses of large collections of dream reports from diverse populations of people; and psychotherapeutic explorations of the multiple dimensions of personal and collective meaning woven into the dream experiences of each individual. Several helpful books on the science of sleep and dreaming are mentioned for further study...
June 19, 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28625125/dreams-and-psychedelics-neurophenomenological-comparison-and-therapeutic-implications
#18
Rainer Kraehenmann
BACKGROUND: A resurgence of neurobiological and clinical research is currently underway into the therapeutic potential of serotonergic or 'classical' psychedelics, such as the prototypical psychedelic drug lysergic acid diethylamide (LSD), psilocybin (4-phosphoryloxy-N,Ndimethyltryptamine), and ayahuasca - a betacarboline- and dimethyltryptamine (DMT)-containing Amazonian beverage. The aim of this review is to introduce readers to the similarities and dissimilarities between psychedelic states and night dreams, and to draw conclusions related to therapeutic applications of psychedelics in psychiatry...
2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28620339/the-stress-acceleration-hypothesis-of-nightmares
#19
Tore Nielsen
Adverse childhood experiences can deleteriously affect future physical and mental health, increasing risk for many illnesses, including psychiatric problems, sleep disorders, and, according to the present hypothesis, idiopathic nightmares. Much like post-traumatic nightmares, which are triggered by trauma and lead to recurrent emotional dreaming about the trauma, idiopathic nightmares are hypothesized to originate in early adverse experiences that lead in later life to the expression of early memories and emotions in dream content...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28618458/dreaming-a-gateway-to-the-unconscious
#20
Steve Paulson, Deirdre Barrett, Kelly Bulkeley, Rubin Naiman
Where do our dreams originate from, and what do they tell us? Is there a universal set of symbols that are common to all dreams, regardless of a person's ethnicity or culture? What does dreaming reveal about the unconscious? Why do some dreams remain etched in our memories, whereas others are almost instantly forgotten? Some scientists have adopted the position that dreams are little more than noise in the brain, without any substantive purpose or function. Yet, such a stance seemingly runs counter to the experience of many people who reflect upon and even analyze their dreams, often in search of clues to their daily lives or insights into their deeper selves...
June 15, 2017: Annals of the New York Academy of Sciences
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