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https://www.readbyqxmd.com/read/28445740/right-brain-left-brain-in-depressive-disorders-clinical-and-theoretical-implications-of-behavioral-electrophysiological-and-neuroimaging-findings
#1
REVIEW
Gerard E Bruder, Jonathan W Stewart, Patrick J McGrath
The right and left side of the brain are asymmetric in anatomy and function. We review electrophysiological (EEG and event-related potential), behavioral (dichotic and visual perceptual asymmetry), and neuroimaging (PET, MRI, NIRS) evidence of right-left asymmetry in depressive disorders. Recent electrophysiological and fMRI studies of emotional processing have provided new evidence of altered laterality in depressive disorders. EEG alpha asymmetry and neuroimaging findings at rest and during cognitive or emotional tasks are consistent with reduced left prefrontal activity in depressed patients, which may impair downregulation of amygdala response to negative emotional information...
April 23, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28445595/ventricular-fibrillation-cardiac-arrest-produces-a-chronic-striatal-hyperdopaminergic-state-that-is-worsened-by-methylphenidate-treatment
#2
Gerald J Nora, Rashed Harun, David F Fine, Daniel Hutchison, Adam C Grobart, Jason P Stezoski, Miranda Munoz, Patrick M Kochanek, Rehana K Leak, Tomas Drabek, Amy K Wagner
Cardiac arrest survival rates have improved with modern resuscitation techniques, but many survivors experience impairments associated with hypoxic-ischemic brain injury. Currently, little is understood about chronic changes in striatal dopamine (DA) systems after hypoxic-ischemic brain injury. Given the common empiric clinical use of DA enhancing agents in neurorehabilitation, investigation evaluating dopaminergic alterations after cardiac arrest (CA) is necessary to optimize rehabilitation approaches. We hypothesized that striatal DA neurotransmission would be altered chronically after ventricular fibrillation cardiac arrest (VF-CA)...
April 26, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28445286/remote-ischemic-preconditioning-improves-the-cognitive-function-of-elderly-patients-following-colon-surgery-a-randomized-clinical-trial
#3
Zhenqiu He, Nan Xu, Sihua Qi
BACKGROUND: Cognitive function impairment is one of the most common complications in elderly patients after surgery, and an ideal nonpharmacological therapy has not yet been identified. Thus, we hypothesized that remote ischemic preconditioning could improve cognitive functions in elderly patients after surgery and investigated the mechanism underlying this effect. METHODS: Ninety patients classified as American Society of Anaesthesiologists (ASA) physical status of 2 or 3 and aged 65 to 75 years who were scheduled for elective colon surgery under general anesthesia were randomly allocated to either a remote ischemic preconditioning group (Group R, n = 45) or a control group (Group C, n = 45)...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28445276/correlation-between-prefrontal-striatal-pathway-impairment-and-cognitive-impairment-in-patients-with-leukoaraiosis
#4
Shuangkun Wang, Junliang Yuan, Xiaojuan Guo, Leilei Teng, Hua Jiang, Hua Gu, Wenli Hu, Tao Jiang
Our study aimed to investigate the changes of white matter microstructure of cortico-subcortical pathways using diffusion tensor imaging (DTI), and to explore the relationship between abnormal parameters of DTI and cognitive function underlying in patients with leukoaraiosis (LA).A total of 42 patients with LA and 42 age- and sex-matched healthy controls were recruited from Beijing Chaoyang Hospital, Capital Medical University between January 2012 and December 2012. All the subjects underwent scans of conventional magnetic resonance imaging and DTI, and a comprehensive neuropsychological battery was utilized...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28444949/voxel-based-morphometry-meta-analysis-of-gray-and-white-matter-finds-significant-areas-of-differences-in-bipolar-patients-from-healthy-controls
#5
REVIEW
Rossana Ganzola, Simon Duchesne
OBJECTIVE: We present a retrospective meta-analysis of voxel-based morphometry (VBM) of gray (GM) and white matter (WM) differences between patients with bipolar disorder (BD) and behaviorally healthy controls. METHODS: We used the activation likelihood estimation and Sleuth software for our meta-analysis, considering P-value maps at the cluster level inference of .05 with uncorrected P<.001. Results were visualized with the software MANGO. RESULTS: We included twenty-five articles in the analysis, and separated the comparisons where BD patients had lower GM or WM concentrations than controls (573 subjects, 21 experiments, and 117 locations/180 subjects, five experiments, and 15 locations, respectively) and the comparisons where BD patients had greater GM concentrations than controls (217 subjects, nine experiments, and 49 locations)...
April 26, 2017: Bipolar Disorders
https://www.readbyqxmd.com/read/28444834/direct-and-indirect-effects-of-attention-and-visual-function-on-gait-impairment-in-parkinson-s-disease-influence-of-task-and-turning
#6
Samuel Stuart, Brook Galna, Louise S Delicato, Sue Lord, Lynn Rochester
Gait impairment is a core feature of Parkinson's disease (PD) which has been linked to cognitive and visual deficits, but interactions between these features are poorly understood. Monitoring saccades allows investigation of real-time cognitive and visual processes and their impact on gait when walking. This study explored; 1) saccade frequency when walking under different attentional manipulations of turning and dual-task; and 2) direct and indirect relationships between saccades, gait impairment, vision and attention...
April 26, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28444695/exercise-therapy-for-chronic-fatigue-syndrome
#7
REVIEW
Lillebeth Larun, Kjetil G Brurberg, Jan Odgaard-Jensen, Jonathan R Price
BACKGROUND: Chronic fatigue syndrome (CFS) is characterised by persistent, medically unexplained fatigue, as well as symptoms such as musculoskeletal pain, sleep disturbance, headaches and impaired concentration and short-term memory. CFS presents as a common, debilitating and serious health problem. Treatment may include physical interventions, such as exercise therapy, which was last reviewed in 2004. OBJECTIVES: The objective of this review was to determine the effects of exercise therapy (ET) for patients with CFS as compared with any other intervention or control...
April 25, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28444220/a-panel-study-on-patients-with-dominant-cerebellar-ataxia-highlights-the-frequency-of-channelopathies
#8
Marie Coutelier, Giulia Coarelli, Marie-Lorraine Monin, Juliette Konop, Claire-Sophie Davoine, Christelle Tesson, Rémi Valter, Mathieu Anheim, Anthony Behin, Giovanni Castelnovo, Perrine Charles, Albert David, Claire Ewenczyk, Mélanie Fradin, Cyril Goizet, Didier Hannequin, Pierre Labauge, Florence Riant, Pierre Sarda, Yves Sznajer, François Tison, Urielle Ullmann, Lionel Van Maldergem, Fanny Mochel, Alexis Brice, Giovanni Stevanin, Alexandra Durr
Autosomal dominant cerebellar ataxias have a marked heterogeneous genetic background, with mutations in 34 genes identified so far. This large amount of implicated genes accounts for heterogeneous clinical presentations, making genotype-phenotype correlations a major challenge in the field. While polyglutamine ataxias, linked to CAG repeat expansions in genes such as ATXN1, ATXN2, ATXN3, ATXN7, CACNA1A and TBP, have been extensively characterized in large cohorts, there is a need for comprehensive assessment of frequency and phenotype of more 'conventional' ataxias...
April 21, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28443508/nutritional-deficiency-in-early-life-facilitates-aging-associated-cognitive-decline
#9
Yu Kang, Yun Zhang, Zijuan Feng, Mingjing Liu, Yanhua Li, Huan Yang, Dan Wang, Lingling Zheng, Dandan Lou, Liangping Cheng, Chunjiang Chen, Weitao Zhou, Yi Feng, Xiaoyong Li, Jianzhong Duan, Mengjiao Yu, Shou Yang, Yuhang Liu, Xin Wang, Bo Deng, Chenghui Liu, Xiuqing Yao, Chi Zhu, Chunrong Liang, Xiaolong Zeng, Sisi Ren, Qunying Li, Yin Zhong, Yong Zhang, Jun Kang, Yong Yan, Huaqing Meng, Zhaohui Zhong, Weihui Zhou, Yanjiang Wang, Tingyu Li, Weihong Song
BACKGROUND: Nutrition is important for the fetal developmental programming. Nutritional deficiency in early life could increase the susceptibility to many aging-related disorders including cognitive decline. OBJECTIVE: Our study aims to investigate the effect of early famine exposure on aging-associated cognitive function. METHODS: We recruited 6790 subjects born between 1956 to 1964 during which the Great Chinese Famine occurred (1959-1961)...
April 24, 2017: Current Alzheimer Research
https://www.readbyqxmd.com/read/28443019/increased-diagnostic-accuracy-of-digital-vs-conventional-clock-drawing-test-for-discrimination-of-patients-in-the-early-course-of-alzheimer-s-disease-from-cognitively-healthy-individuals
#10
Stephan Müller, Oliver Preische, Petra Heymann, Ulrich Elbing, Christoph Laske
The conventional Clock Drawing Test (cCDT) is a rapid and inexpensive screening tool for detection of moderate and severe dementia. However, its usage is limited due to poor diagnostic accuracy especially in patients with mild cognitive impairment (MCI). The diagnostic value of a newly developed digital Clock Drawing Test (dCDT) was evaluated and compared with the cCDT in 20 patients with early dementia due to AD (eDAT), 30 patients with amnestic MCI (aMCI) and 20 cognitively healthy controls (HCs). Parameters assessed by dCDT were time while transitioning the stylus from one stroke to the next above the surface (i...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28442933/drainage-of-malignant-ascites-patient-selection-and-perspectives
#11
REVIEW
Maciej Stukan
Malignant ascites (MA) is a sign of advanced cancer and poor prognosis. MA can result in impairment in quality of life (QOL) and significant symptoms. As a supportive treatment, ascites can be drained by paracentesis (PC), percutaneously implanted catheters (tunneled, untunneled, central venous catheters), or peritoneal ports, or peritoneovenous shunts. The aim of this study was to evaluate the effectiveness, safety, and patient-reported outcomes (PRO) of different drainage methods for the management of MA...
2017: Cancer Management and Research
https://www.readbyqxmd.com/read/28442537/age-related-reversals-in-neural-recruitment-across-memory-retrieval-phases
#12
Jaclyn H Ford, Elizabeth A Kensinger
Over the last several decades, neuroimaging research has identified age-related neural changes that occur during cognitive tasks. These changes are used to help researchers identify functional changes that contribute to age-related impairments in cognitive performance. One commonly reported example of such a change is an age-related decrease in recruitment of posterior sensory regions coupled with an increased recruitment of prefrontal regions across multiple cognitive tasks. This shift is often described as a compensatory recruitment of prefrontal regions due to age-related sensory processing deficits in posterior regions...
April 25, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28442405/the-effect-of-active-video-games-on-cognitive-functioning-in-clinical-and-non-clinical-populations-a-meta-analysis-of-randomized-controlled-trials
#13
REVIEW
Emma Stanmore, Brendon Stubbs, Davy Vancampfort, Eling D de Bruin, Joseph Firth
Physically-active video games ('exergames') have recently gained popularity for leisure and entertainment purposes. Using exergames to combine physical activity and cognitively-demanding tasks may offer a novel strategy to improve cognitive functioning. Therefore, this systematic review and meta-analysis was performed to establish effects of exergames on overall cognition and specific cognitive domains in clinical and non-clinical populations. We identified 17 eligible RCTs with cognitive outcome data for 926 participants...
April 22, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28442320/people-with-multiple-sclerosis-report-significantly-worse-symptoms-and-health-related-quality-of-life-than-the-us-general-population-as-measured-by-promis-and-neuroqol-outcome-measures
#14
Dagmar Amtmann, Alyssa M Bamer, Jiseon Kim, Hyewon Chung, Rana Salem
BACKGROUND: Individuals with multiple sclerosis (MS) report fatigue, pain, depression, cognitive difficulties, and other symptoms. It is often difficult to compare symptoms across studies and populations because scales used to measure individual symptoms or quality of life indicators (QOLI) use different metrics and often do not provide norms. PROMIS and Neuro-QOL measures, developed with modern psychometric methods, use a common metric and provide population norms. OBJECTIVE: To create symptom profiles and compare symptoms and QOLIs of people living with MS to a US general population sample...
April 21, 2017: Disability and Health Journal
https://www.readbyqxmd.com/read/28442276/investigating-the-effects-of-nitrous-oxide-sedation-on-frontal-parietal-interactions
#15
Ryu Ji-Ho, Pil-Jong Kim, Hong-Gee Kim, Yong-Seo Koo, Teo Jeon Shin
Although functional connectivity has received considerable attention in the study of consciousness, few studies have investigated functional connectivity limited to the sedated state where consciousness is maintained but impaired. The aim of the present study was to investigate changes in functional connectivity of the parietal-frontal network resulting from nitrous oxide-induced sedation, and to determine the neural correlates of cognitive impairment during consciousness transition states. Electroencephalography was acquired from healthy adult patients who underwent nitrous oxide inhalation to induce cognitive impairment, and was analyzed using Granger causality (GC)...
April 22, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28442249/the-relationship-between-cognitive-insight-and-cognitive-performance-among-individuals-with-at-risk-mental-state-for-developing-psychosis
#16
Noriyuki Ohmuro, Masahiro Katsura, Chika Obara, Tatsuo Kikuchi, Yumiko Hamaie, Atsushi Sakuma, Kunio Iizuka, Fumiaki Ito, Hiroo Matsuoka, Kazunori Matsumoto
Impairments in cognitive insight-the capacity to appraise and modify one's own distorted beliefs-are believed to be associated with the formation of psychosis. Nevertheless, the association between cognitive insight and cognitive function among people with at-risk mental state (ARMS) for developing psychotic illness has not been made clear. In this study, we used the Beck Cognitive Insight Scale (BCIS) to assess cognitive insight and the Brief Assessment of Cognition in Schizophrenia (BACS) and the Wisconsin Card Sorting Test (WCST) to assess cognitive functions...
April 22, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28442186/the-acceptability-and-potential-utility-of-cognitive-training-to-improve-working-memory-in-persons-living-with-hiv-a-preliminary-randomized-trial
#17
Sheri L Towe, Puja Patel, Christina S Meade
HIV-associated neurocognitive impairments that impact daily function persist in the era of effective antiretroviral therapy. Cognitive training, a promising low-cost intervention, has been shown to improve neurocognitive functioning in some clinical populations. We tested the feasibility, acceptability, and preliminary effects of computerized cognitive training to improve working memory in persons living with HIV infection (PLWH) and working memory impairment. In this randomized clinical trial, we assigned 21 adult PLWH to either an experimental cognitive training intervention or an attention-matched control training intervention...
March 30, 2017: Journal of the Association of Nurses in AIDS Care: JANAC
https://www.readbyqxmd.com/read/28441901/patient-emergency-assessment-following-deliberate-self-poisoning-with-benzodiazepines-can-cognitive-markers-predict-recall-of-the-psychiatric-interview-a-pilot-study
#18
J Salles, J Pariente, C Dimeglio, P Gandia, B Lemesle, A Giron, N Franchitto, L Schmitt, E Very
STUDY HYPOTHESIS: In cases of deliberate self-poisoning (DSP), patients often ingest benzodiazepines (BZDs), known to alter memory. Experts recommend recovery of the patient's cognitive capacity before psychiatric assessment. Unfortunately, there is no validated tool in common practice to assess whether sufficient cognitive recovery has occurred after DSP with BZDs to ensure patient memory of the assessment. OBJECTIVE: The aim of the study was to identify cognitive functions and markers which predict preserved memory of the mental health care plan proposed at the emergency department after DSP...
April 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28441649/home-based-physical-behavior-in-late-stage-parkinson-disease-dementia-differences-between-cognitive-subtypes
#19
Bernhard Cerff, Walter Maetzler, Patricia Sulzer, Malte Kampmeyer, Jos Prinzen, Markus A Hobert, Dominik Blum, Rob van Lummel, Silvia Del Din, Susanne Gräber, Daniela Berg, Inga Liepelt-Scarfone
BACKGROUND: For the early diagnosis of Parkinson disease dementia (PDD), objective home-based tools are needed to quantify even mild stages of dysfunction of the activities of daily living (ADL). OBJECTIVES: In this pilot study, home-based physical behavior was assessed to examine whether it is possible to distinguish mild cognitive impairment (PD-MCI) from PDD. METHODS: Fifty-five patients with mild to severe Parkinson disease (PD) participated in this cross-sectional study...
April 26, 2017: Neuro-degenerative Diseases
https://www.readbyqxmd.com/read/28441118/mechanisms-of-hippocampal-aging-and-the-potential-for-rejuvenation
#20
Xuelai Fan, Elizabeth G Wheatley, Saul A Villeda
The past two decades have seen remarkable progress in our understanding of the multifactorial drivers of hippocampal aging and cognitive decline. Recent findings have also raised the possibility of functional rejuvenation in the aged hippocampus. In this review, we aim to synthesize the mechanisms that drive hippocampal aging and evaluate critically the potential for rejuvenation. We discuss the functional changes in synaptic plasticity and regenerative potential of the aged hippocampus, followed by mechanisms of microglia aging, and assess the cross talk between these proaging processes...
April 24, 2017: Annual Review of Neuroscience
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