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https://www.readbyqxmd.com/read/28649389/cases-of-acute-mercury-poisoning-by-mercury-vapor-exposure-during-the-demolition-of-a-fluorescent-lamp-factory
#1
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
#2
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
#3
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
#4
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
#5
Rainer Kraehenmann
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,N-dimethyltryptamine), and ayahuasca - a betacarboline- and dimethyltryptamine (DMT)-containing Amazonian beverage. However, the mechanisms of therapeutic action are still not fully explained. Given that an altered state of consciousness is a common denominator that characterizes all classical psychedelics and given that both rapid eye movement sleep (REMS) and psychedelics modulate perception, mental imagery, emotion activation, fear memory extinction, and sense of self and body, in the present article, these two states of consciousness are systematically compared, and therapeutically relevant conclusions are drawn based on available evidence...
June 18, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28620339/the-stress-acceleration-hypothesis-of-nightmares
#6
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
#7
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
https://www.readbyqxmd.com/read/28585737/a-new-measure-of-hallucinatory-states-and-a-discussion-of-rem-sleep-dreaming-as-a-virtual-laboratory-for-the-rehearsal-of-embodied-cognition
#8
Clemens Speth, Jana Speth
Hallucinatory states are experienced not only in connection with drugs and psychopathologies but occur naturally and spontaneously across the human circadian cycle: Our nightly dreams bring multimodal experiences in the absence of adequate external stimuli. The current study proposes a new, tighter measure of these hallucinatory states: Sleep onset, REM sleep, and non-REM sleep are shown to differ with regard to (a) motor imagery indicating interactions with a rich imaginative world, and (b) cognitive agency that could enable sleepers to recognize their hallucinatory state...
June 6, 2017: Cognitive Science
https://www.readbyqxmd.com/read/28575720/local-aspects-of-sleep-and-wakefulness
#9
REVIEW
Francesca Siclari, Giulio Tononi
Slow waves, the hallmark of NREM (Non Rapid Eye Movement) sleep, are not uniformly distributed across the cortical surface, but can occur locally and asynchronously across brain regions. Their regional distribution and amplitude is affected by brain maturation and by time spent awake, mediated in part by experience-dependent changes in synaptic strength. Recent studies have shown that local low-frequency oscillations (<10Hz) can also occur in REM sleep and during wakefulness, leading to region-specific cognitive errors...
May 30, 2017: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/28572762/evaluating-and-improving-automatic-sleep-spindle-detection-by-using-multi-objective-evolutionary-algorithms
#10
Min-Yin Liu, Adam Huang, Norden E Huang
Sleep spindles are brief bursts of brain activity in the sigma frequency range (11-16 Hz) measured by electroencephalography (EEG) mostly during non-rapid eye movement (NREM) stage 2 sleep. These oscillations are of great biological and clinical interests because they potentially play an important role in identifying and characterizing the processes of various neurological disorders. Conventionally, sleep spindles are identified by expert sleep clinicians via visual inspection of EEG signals. The process is laborious and the results are inconsistent among different experts...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28568911/dream-emotions-a-comparison-of-home-dream-reports-with-laboratory-early-and-late-rem-dream-reports
#11
Pilleriin Sikka, Antti Revonsuo, Nils Sandman, Jarno Tuominen, Katja Valli
The aim of this study was to compare the emotional content of dream reports collected at home upon morning awakenings with those collected in the laboratory upon early and late rapid eye movement (REM) sleep awakenings. Eighteen adults (11 women, seven men; mean age = 25.89 ± 4.85) wrote down their home dreams every morning immediately upon awakening during a 7-day period. Participants also spent two non-consecutive nights in the sleep laboratory where they were awoken 5 min into each continuous REM sleep stage, upon which they gave a verbal dream report...
June 1, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28562209/the-phenomenal-contents-and-neural-correlates-of-spontaneous-thoughts-across-wakefulness-nrem-sleep-and-rem-sleep
#12
Lampros Perogamvros, Benjamin Baird, Mitja Seibold, Brady Riedner, Melanie Boly, Giulio Tononi
Thoughts occur during wake as well as during dreaming sleep. Using experience sampling combined with high-density EEG, we investigated the phenomenal qualities and neural correlates of spontaneously occurring thoughts across wakefulness, non-rapid eye movement (NREM) sleep, and REM sleep. Across all states, thoughts were associated with activation of a region of the midcingulate cortex. Thoughts during wakefulness additionally involved a medial prefrontal region, which was associated with metacognitive thoughts during wake...
May 31, 2017: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/28545360/melatonin-effects-in-rem-sleep-behavior-disorder-associated-with-obstructive-sleep-apnea-syndrome-a-case-series
#13
Carolin Schaefer, Dieter Kunz, Frederik Bes
OBJECTIVES: REM sleep behavior disorder (RBD), with its main clinical symptoms of nightmares with dream-enacting behavior, is considered as a possible precursor of neurodegenerative disease. Obstructive Sleep Apnea Syndrome (OSAS) is known to be capable of provoking RBD-like symptoms by apneic event related arousals. The two sleep related pathologies must coincide in a relevant number of individuals because of overlapping prevalence in similar age groups. Until now RBD symptoms coexisting with OSAS are rarely described in scientific literature and in fact considered as OSAS mimicking RBD...
May 22, 2017: Current Alzheimer Research
https://www.readbyqxmd.com/read/28539902/arousal-in-nocturnal-consciousness-how-dream-and-sleep-experiences-may-inform-us-of-poor-sleep-quality-stress-and-psychopathology
#14
REVIEW
Nirit Soffer-Dudek
The term "sleep experiences," coined by Watson (2001), denotes an array of unusual nocturnal consciousness phenomena; for example, nightmares, vivid or recurrent dreams, hypnagogic hallucinations, dreams of falling or flying, confusional arousals, and lucid dreams. Excluding the latter, these experiences reflect a single factor of atypical oneiric cognitions ("general sleep experiences"). The current study is an opinionated mini-review on the associations of this factor-measured with the Iowa sleep experiences survey (ISES, Watson, 2001)-with psychopathological symptoms and stress...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28520464/suvorexant-for-the-treatment-of-insomnia-in-adolescents
#15
Kentaro Kawabe, Fumie Horiuchi, Marina Ochi, Kayoko Nishimoto, Shu-Ichi Ueno, Yasunori Oka
OBJECTIVES: Suvorexant is the first dual orexin receptor antagonist for treating insomnia. This study aimed to evaluate the tolerability, efficacy, and safety of suvorexant on insomnia in adolescents. METHODS: Thirty patients (8 male and 22 female; mean standard deviation age: 15.7 ± 2.4 years; range: 10-20) with insomnia were administered suvorexant. Clinical background, persistence rate, the Clinical Global Impression (CGI), and the Athens Insomnia Scale (AIS) were compared between patients who continued and discontinued suvorexant treatment...
May 18, 2017: Journal of Child and Adolescent Psychopharmacology
https://www.readbyqxmd.com/read/28515493/sleep-dream-a-little-dream
#16
Sian Lewis
No abstract text is available yet for this article.
May 18, 2017: Nature Reviews. Neuroscience
https://www.readbyqxmd.com/read/28513079/rem-sleep-behavior-disorder-in-parkinson-s-disease-and-other-synucleinopathies
#17
REVIEW
Erik K St Louis, Angelica R Boeve, Bradley F Boeve
Rapid eye movement sleep behavior disorder is characterized by dream enactment and complex motor behaviors during rapid eye movement sleep and rapid eye movement sleep atonia loss (rapid eye movement sleep without atonia) during polysomnography. Rapid eye movement sleep behavior disorder may be idiopathic or symptomatic and in both settings is highly associated with synucleinopathy neurodegeneration, especially Parkinson's disease, dementia with Lewy bodies, multiple system atrophy, and pure autonomic failure...
May 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/28513054/is-there-a-common-motor-dysregulation-in-sleepwalking-and-rem-sleep-behaviour-disorder
#18
Mehdi Haridi, Sebastian Weyn Banningh, Marion Clé, Smaranda Leu-Semenescu, Marie Vidailhet, Isabelle Arnulf
This study sought to determine if there is any overlap between the two major non-rapid eye movement and rapid eye movement parasomnias, i.e. sleepwalking/sleep terrors and rapid eye movement sleep behaviour disorder. We assessed adult patients with sleepwalking/sleep terrors using rapid eye movement sleep behaviour disorder screening questionnaires and determined if they had enhanced muscle tone during rapid eye movement sleep. Conversely, we assessed rapid eye movement sleep behaviour disorder patients using the Paris Arousal Disorders Severity Scale and determined if they had more N3 awakenings...
May 17, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/28482107/phasic-rem-transiently-approaches-wakefulness-in-the-human-cortex-a-single-pulse-electrical-stimulation-study
#19
Kiyohide Usami, Riki Matsumoto, Katsuya Kobayashi, Takefumi Hitomi, Masao Matsuhashi, Akihiro Shimotake, Takayuki Kikuchi, Kazumichi Yoshida, Takeharu Kunieda, Nobuhiro Mikuni, Susumu Miyamoto, Ryosuke Takahashi, Akio Ikeda
Study Objectives: To investigate the changes in cortical neural responses induced by external inputs during phasic rapid eye movement (REM) sleep. Methods: Single-pulse electrical stimulation (SPES) was directly applied to the human cortex during REM sleep through subdural electrodes, in seven patients who underwent invasive presurgical evaluation for intractable partial epilepsy. SPES was applied to parts of the cortex through the subdural electrodes, and induced cortical responses were recorded from adjacent and remote cortical areas...
May 8, 2017: Sleep
https://www.readbyqxmd.com/read/28476256/-the-post-traumatic-nightmare-or-the-ghost-of-past-trauma
#20
REVIEW
Pierrick Disdier
The post-traumatic nightmare is the reliving of traumatic scenes during sleep and is linked to post-traumatic stress disorder. Unlike other forms of dreams, it can happen at any stage of sleep, invasively, and makes the person relive their traumatic scenario, which can plunge them into a state of terror and shock. Post-traumatic nightmares thereby maintain and reactivate the traumatic memory. However, narration techniques can lead to a marked improvement and even the disappearance of these nightmares.
May 2017: Soins. Psychiatrie
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