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https://www.readbyqxmd.com/read/29161707/a-novel-animal-model-simulating-the-beginning-of-combat-exposure
#1
Dongsoo Kim, Chang Yul Kim, Hyojin Koo, Yong Heo, Kicheol Cheon
OBJECTIVE: Predator stress, social defeat stress, and fear conditioning animal models have been applied to investigate combat-related posttraumatic stress disorder (PTSD). However, no animal model psychopharmacological studies have investigated prevention of somatization of increased mental stress and fatigue at the beginning of combat exposure. This study utilized a novel animal model simulating the beginning of combat exposure that aided specification of a set of biomarkers. METHODS: Psychological stress was induced by both inescapable electric foot shock and noise stimuli...
November 22, 2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/29161383/basal-forebrain-gating-by-somatostatin-neurons-drives-prefrontal-cortical-activity
#2
Nelson Espinosa, Alejandra Alonso, Cristian Morales, Pedro Espinosa, Andrés E Chávez, Pablo Fuentealba
The basal forebrain provides modulatory input to the cortex regulating brain states and cognitive processing. Somatostatin-expressing neurons constitute a heterogeneous GABAergic population known to functionally inhibit basal forebrain cortically projecting cells thus favoring sleep and cortical synchronization. However, it remains unclear if somatostatin cells can regulate population activity patterns in the basal forebrain and modulate cortical dynamics. Here, we demonstrate that somatostatin neurons regulate the corticopetal synaptic output of the basal forebrain impinging on cortical activity and behavior...
November 17, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/29160603/relationship-between-self-reported-cognitive-difficulties-objective-neuropsychological-test-performance-and-psychological-distress-in-chronic-pain
#3
K S Baker, S J Gibson, N Georgiou-Karistianis, M J Giummarra
BACKGROUND: Persons with chronic pain often report problems with cognitive abilities, such as memory or attention. There is limited understanding of whether objective performance is consistent with subjective reports, and how psychological factors contribute. We aimed to investigate these relationships in a group of patients expressing cognitive concerns, and evaluate the utility of self-report tools for pain management settings. METHOD: Participants with chronic pain (n = 41) completed standardized neuropsychological tests, and self-report measures of cognitive functioning, pain, mood and sleep, as part of a broader study investigating cognitive performance in pain...
November 21, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/29160555/the-effect-of-sleep-disorders-sedating-medications-and-depression-on-cognitive-processing-therapy-outcomes-a-fuzzy-set-qualitative-comparative-analysis
#4
Patricia L Haynes, Sarah E Emert, Dana Epstein, Suzanne Perkins, Sairam Parthasarathy, James Wilcox
Cognitive processing therapy (CPT) for posttraumatic stress disorder (PTSD) is an effortful process requiring engagement in cognitive restructuring. Sleep disorders may lead to avoidance of effortful tasks and cognitive performance deficits. We explored whether sleep disorders, as assessed by polysomnography, were consistently associated with treatment response in combination with other factors. This study included 32 U.S. veterans who were examined both before and after CPT for combat-related PTSD. We employed a novel, case-comparative technique, fuzzy set qualitative comparative analysis (fsQCA), to identify combinations of fuzzy and crisp factors (recipes) that achieve a clinically significant outcome...
November 21, 2017: Journal of Traumatic Stress
https://www.readbyqxmd.com/read/29159907/the-ability-to-self-monitor-cognitive-performance-during-60%C3%A2-h-total-sleep-deprivation-and-following-2%C3%A2-nights-recovery-sleep
#5
Johanna M Boardman, Bei Bei, Alix Mellor, Clare Anderson, Tracey L Sletten, Sean P A Drummond
We aimed to investigate whether self-monitoring of performance is altered during 60 h of total sleep deprivation, following 2 nights of recovery sleep, and by task difficulty and/or subjective sleepiness. Forty adults (22 females, aged 19-39 years) underwent a 5-day protocol, with a well-rested day, 66 h total sleep deprivation (last test session at 60 h), and 2 nights of 8 h recovery sleep. An arithmetic task (MATH) with three difficulty levels assessed working memory. The Psychomotor Vigilance Task assessed sustained attention...
November 20, 2017: Journal of Sleep Research
https://www.readbyqxmd.com/read/29158073/methodological-challenges-in-the-comparison-of-infant-fmri-across-age-groups
#6
REVIEW
Rhodri Cusack, Olivia McCuaig, Annika C Linke
Functional MRI (fMRI) in infants is rapidly growing and providing fundamental insights into the origins of brain functions. Comparing brain development at different ages is particularly powerful, but there are a number of methodological challenges that must be addressed if confounds are to be avoided. With development, brains change in composition in a way that alters their tissue contrast, and in size, shape, and gyrification, requiring careful image processing strategies and age-specific standard templates...
November 11, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/29157589/overweight-and-obesity-add-to-behavioral-problems-in-children-with-sleep-disordered-breathing
#7
Sarah N Biggs, Knarik Tamanyan, Lisa M Walter, Aidan J Weichard, Margot J Davey, Gillian M Nixon, Rosemary S C Horne
OBJECTIVE: This study aimed to determine whether overweight and obesity increased the detrimental effects of pediatric sleep-disordered breathing (SDB) on cognition, behavior, mood, and quality of life. METHODS: Children and adolescents (8-16 years) with clinically diagnosed SDB were categorized into two groups: healthy weight (Body Mass Index (BMI) z-score <1.04, N = 11) and overweight/obese (BMI z-score ≥ 1.04, N = 10). Age-matched healthy weight, non-snoring controls (N = 25) were recruited from the community...
November 2017: Sleep Medicine
https://www.readbyqxmd.com/read/29157588/sleep-spindles-may-predict-response-to-cognitive-behavioral-therapy-for-chronic-insomnia
#8
Thien Thanh Dang-Vu, Benjamin Hatch, Ali Salimi, Melodee Mograss, Soufiane Boucetta, Jordan O'Byrne, Marie Brandewinder, Christian Berthomier, Jean-Philippe Gouin
BACKGROUND: While cognitive-behavioral therapy for insomnia constitutes the first-line treatment for chronic insomnia, only few reports have investigated how sleep architecture relates to response to this treatment. In this pilot study, we aimed to determine whether pre-treatment sleep spindle density predicts treatment response to cognitive-behavioral therapy for insomnia. METHODS: Twenty-four participants with chronic primary insomnia participated in a 6-week cognitive-behavioral therapy for insomnia performed in groups of 4-6 participants...
November 2017: Sleep Medicine
https://www.readbyqxmd.com/read/29157586/does-comorbid-obstructive-sleep-apnea-impair-the-effectiveness-of-cognitive-and-behavioral-therapy-for-insomnia
#9
Alexander Sweetman, Leon Lack, Sky Lambert, Michael Gradisar, Jodie Harris
AIMS: Comorbid insomnia and obstructive sleep apnea (OSA) represents a highly prevalent and debilitating condition; however, physicians and researchers are still uncertain about the most effective treatment approach. Several research groups have suggested that these patients should initially receive treatment for their insomnia before the sleep apnea is targeted. The current study aims to determine whether Cognitive and Behavioral Therapy for Insomnia (CBT-i) can effectively treat insomnia in patients with comorbid OSA and whether its effectiveness is impaired by the presence of OSA...
November 2017: Sleep Medicine
https://www.readbyqxmd.com/read/29156905/i-hurt-so-hypnotic-interventions-and-palliative-care-for-traumatic-brain-injury
#10
Donald Moss
This article presents a case study in which self-hypnosis, hypnosis-assisted psychotherapy, and palliative care strategies were provided within a multi-modal integrative treatment program for a 38-year-old woman with traumatic brain injury (TBI) secondary to motor vehicle accident. Self-hypnosis was helpful in anxiety reduction and pain management. Hypnosis-assisted psychotherapy was beneficial in de-sensitizing many post-traumatic memories, and in managing post-concussion pain, including neuropathic pain and post-traumatic migraine headaches...
September 12, 2017: Annals of Palliative Medicine
https://www.readbyqxmd.com/read/29156690/abnormal-amplitude-of-low-frequency-fluctuations-associated-with-rapid-eye-movement-in-chronic-primary-insomnia-patients
#11
Qian Ran, Jia Chen, Chuan Li, Li Wen, Faguo Yue, Tongsheng Shu, Jianxun Mi, Guangxian Wang, Lei Zhang, Dong Gao, Dong Zhang
Purpose: Chronic primary insomnia (CPI) is the most prevalent sleep disorder worldwide. CPI manifests as difficulties in sleep onset, maintaining sleep, prolonged sleep latency, and daytime impairment and is often accompanied by cognitive problems such as poor academic performance, poor attention, and decreased memory. The most popular explanation of insomnia is hyperarousal or increased activities of neurons. Rapid eye movement (REM) sleep detected by polysomnography (PSG) exhibits a positive relationship with brain homeostasis and can be helpful for optimally preparing an organism for emotional and social function...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29154132/dexmedetomidine-promotes-biomimetic-non-rapid-eye-movement-stage-3-sleep-in-humans-a-pilot-study
#12
Oluwaseun Akeju, Lauren E Hobbs, Lei Gao, Sara M Burns, Kara J Pavone, George S Plummer, Elisa C Walsh, Tim T Houle, Seong-Eun Kim, Matt T Bianchi, Jeffrey M Ellenbogen, Emery N Brown
OBJECTIVES: Sleep, which comprises of rapid eye movement (REM) and non-REM stages 1-3 (N1-N3), is a natural occurring state of decreased arousal that is crucial for normal cardiovascular, immune and cognitive function. The principal sedative drugs produce electroencephalogram beta oscillations, which have been associated with neurocognitive dysfunction. Pharmacological induction of altered arousal states that neurophysiologically approximate natural sleep, termed biomimetic sleep, may eliminate drug-induced neurocognitive dysfunction...
October 20, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29153005/screening-for-delirium-development-and-validation-of-the-buffalo-delirium-scale-for-use-in-a-home-based-hospice-setting
#13
Jennifer M Breier, Scott T Meier, Christopher W Kerr, Scott T Wright, Pei C Grant, Rachel M Depner
BACKGROUND: Delirium is a challenging occurrence among people at end of life. It can be difficult to detect and treat because of its episodic nature. The Buffalo Delirium Scale (BDS) was designed to identify risk factors for hospice patients in the prodromal stage of delirium. OBJECTIVE: This study evaluated the psychometric properties of items assessing delirium risk factors related to cognitive problems, psychological distress, and sleep problems. METHODS: Hospice nursing staff assessed patients with the 11-item BDS over a 6-month period as part of standard weekly visits to monitor for emerging signs of delirium, for example, sleep patterns, cognition, and behavior...
January 1, 2017: American Journal of Hospice & Palliative Care
https://www.readbyqxmd.com/read/29151101/psychoacoustics-and-neurophysiological-alterations-after-30-36-hours-of-sleep-deprivation
#14
Adrián Poblano, Sergio Díaz-Leines, Olga Gama-Moreno, Blanca Flores-Avalos
BACKGROUND AND AIM: Sleep deprivation (SD) may result in perceptual and cognitive alterations in healthy subjects. Our objective was to compare whether psychoacoustics and neurophysiological variables in healthy subjects were altered after SD of 30-36 h. METHOD: We examined 22 subjects by means of several psychoacoustics tests, P300 and mismatch negativity (MMN) recordings, and brainstem auditory evoked potentials (BAEP) before and after 30-36 h of SD. RESULTS: In the psychoacoustics tests, we found that after SD, difficulties were experienced by the left ear in the discrimination of words in noise and by the right ear in music discrimination...
November 18, 2017: Neuropsychobiology
https://www.readbyqxmd.com/read/29150872/predicting-the-onset-of-freezing-of-gait-a-longitudinal-study
#15
Kaylena A Ehgoetz Martens, Emily L Lukasik, Matthew J Georgiades, Moran Gilat, Julie M Hall, Courtney C Walton, Simon J G Lewis
BACKGROUND: Freezing of gait is a disabling symptom of Parkinson's disease that ultimately affects approximately 80% of patients, yet very little research has focused on predicting the onset of freezing of gait and tracking the longitudinal progression of symptoms prior to its onset. The objective of the current study was to examine longitudinal data spanning the transition period when patients with PD developed freezing of gait to identify symptoms that may precede freezing and create a prediction model that identifies those "at risk" for developing freezing of gait in the year to follow...
November 18, 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/29149767/the-effects-of-sleep-on-the-neural-correlates-of-pattern-separation
#16
Christopher R Doxey, Cooper Hodges, Ty Bodily, Nathan M Muncy, C Brock Kirwan
Effective memory representations must be specific to prevent interference between episodes that may overlap in terms of place, time, or items present. Pattern separation, a computational process performed by the hippocampus, overcomes this interference by establishing non-overlapping memory representations. Although it is widely accepted that declarative memories are consolidated during sleep, the effects of sleep on pattern separation have yet to be elucidated. We used whole-brain, high-resolution functional neuroimaging to investigate the effects of sleep on a task that places high demands on pattern separation...
November 17, 2017: Hippocampus
https://www.readbyqxmd.com/read/29148201/current-perspectives-on-the-role-of-tonsillectomy
#17
REVIEW
Samuel R Greig
Tonsillectomy is one of the most common paediatric surgical procedures performed in Australasia. The aim of this paper is to provide an up-to-date review of the indications for the procedure (and the evidence base for each of these indications), as well as describe the surgical technique and perioperative management and risks for a non-surgical audience. The primary indications for tonsillectomy are obstructive sleep apnoea (OSA) (where it is most commonly performed in association with adenoidectomy) and recurrent pharyngotonsillitis...
November 2017: Journal of Paediatrics and Child Health
https://www.readbyqxmd.com/read/29147822/psychiatric-sequelae-of-concussions
#18
REVIEW
David A Brent, Jeffrey Max
PURPOSE OF REVIEW: The purpose of this study was to review the frequency, risk factors, phenomenology, and course of prolonged recovery from concussion and of psychiatric sequelae in pediatric populations. RECENT FINDINGS: Youth with prolonged recovery from concussions have higher initial symptoms, a history of multiple and/or recent concussions, and a tendency to somatization. Depression, post-traumatic stress disorder, behavioral disorders, and perhaps, suicidal behavior disorder are more common as both short- and longer-term sequelae of concussions...
November 17, 2017: Current Psychiatry Reports
https://www.readbyqxmd.com/read/29147148/the-effects-of-depression-anxiety-and-sleep-disturbances-on-cognitive-impairment-in-patients-with-chronic-obstructive-pulmonary-disease
#19
Yesim Güzey Aras, Abdülkadir Tunç, Belma Doğan Güngen, Adil Can Güngen, Yusuf Aydemir, Bekir Enes Demiyürek
The purpose of this study was to investigate the effects of depression, anxiety and sleep disturbances on cognitive functions in chronic obstructive pulmonary disease (COPD) patients. In this prospective case-control study, demographic data, smoking history, depression, anxiety, sleep quality and cognitive status of 48 COPD patients and 36 healthy volunteers aged 40-90 years were recorded. The Beck depression inventory (BDI), the Beck anxiety inventory (BAI), and Pittsburgh Sleep Quality Index (PSQI) were used to assess depression, anxiety and sleep quality, respectively in COPD patients...
December 2017: Cognitive Neurodynamics
https://www.readbyqxmd.com/read/29145409/predictors-of-suicide-ideation-among-older-adults-with-bipolar-disorder
#20
Norm O'Rourke, Marnin J Heisel, Sarah L Canham, Andrew Sixsmith
OBJECTIVES: Bipolar disorder (BD) carries the greatest risk of death by suicide of all psychiatric conditions as 25%-50% of those with BD will make one or more suicide attempt, and about 15% will intentionally end their lives. Among young adults with BD, substance misuse, medication non-adherence, age at onset, and comorbid psychiatric conditions each predict self-harm. It is currently unclear if these same factors or others predict suicide ideation among older adults with BD. METHODS: We recruited a global sample of 220 older adults with BD over 19 days using socio-demographically targeted, social media advertising and online data collection (Mean = 58...
2017: PloS One
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