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https://www.readbyqxmd.com/read/28930751/dementia-predicting-cognitive-risk-score-and-its-correlation-with-cortical-thickness-in-parkinson-disease
#1
Byoung Seok Ye, Seun Jeon, Jee Hyun Ham, Jae Jung Lee, Jong Min Lee, Hye Sun Lee, Phil Hyu Lee, Young H Sohn
BACKGROUND: We developed a risk score system to predict risks of developing dementia in individual Parkinson disease (PD) patients using baseline neuropsychological tests. METHODS: A total of 216 nondemented PD patients underwent a baseline neuropsychological evaluation and were followed up for a mean of 2.7 (±1.1) years. Univariate Cox regression models controlled for age, gender, and education selected neuropsychological tests individually predicting dementia risk...
September 21, 2017: Dementia and Geriatric Cognitive Disorders
https://www.readbyqxmd.com/read/28926815/cognitive-function-and-walking-velocity-in-people-with-dementia-a-comparison-of-backward-and-forward-walking
#2
Hanna Johansson, Lillemor Lundin-Olsson, Håkan Littbrand, Yngve Gustafson, Erik Rosendahl, Annika Toots
How forward and backward walking, both central to everyday life, relate to cognition are relatively unexplored in people with dementia. This study aimed to investigate if forward and backward walking velocity respectively, associated with global cognition and executive function in people with dementia, and whether the association differed according to walking aid use or dementia type. Using a cross-sectional design, 161 participants (77% women), a mean Mini-Mental State Examination (MMSE) score of 15, and mean age of 85...
September 9, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28926308/neuropsychological-differences-between-men-and-women-with-alzheimer-s-disease
#3
Joseph J Ryan, Laura Glass Umfleet, David S Kreiner, Amanda M Fuller, Anthony M Paolo
BACKGROUND: It has been suggested that men and women with Alzheimer's disease (AD) at comparable levels of global cognitive impairment perform differently on neuropsychological measures. Such differences may have practical implications for designing cognitive interventions that address symptoms of dementia. METHODS: We compared men (n = 86) and women (n = 96) with AD on tests of immediate and delayed prose memory, verbal fluency, semantic fluency, semantic memory, and confrontation naming...
September 19, 2017: International Journal of Neuroscience
https://www.readbyqxmd.com/read/28922960/cognitive-performance-in-transient-global-hypoxic-brain-injury-due-to-moderate-drowning
#4
Mariana Penteado Nucci, Katerina Lukasova, Gilson Vieira, João Ricardo Sato, Edson Amaro Júnior
INTRODUCTION: Drowning is a serious and frequently neglected public health threat. Primary respiratory impairment after submersion often leads to brain dysfunction. Depending on the period of global hypoxia (respiratory failure), clinical aspects of neurological dysfunction are evident on the first evaluation after the water rescue. Nowadays, many neuropsychological assessments after drowning are inconclusive, with some studies reporting only minor neurological or cognitive impairments...
September 19, 2017: Journal of Clinical and Experimental Neuropsychology
https://www.readbyqxmd.com/read/28921863/gender-differences-in-brain-networks-during-verbal-sternberg-tasks-a-simultaneous-near-infrared-spectroscopy-and-electro-encephalography-study
#5
Chenyang Gao, Jinyan Sun, Xiaoquan Yang, Hui Gong
Gender differences in psychological processes have been of great interest in a variety of fields including verbal fluency, emotion processing, and working memory. Previous studies suggested that women outperform men in verbal working memory (VWM). However, the inherent mechanisms are still unclear. To obtain a deeper insight into the gender differences in brain networks in VWM, this study used near-infrared spectroscopy (NIRS) and electro-encephalography (EEG) simultaneously to investigate gender-related brain networks during verbal Sternberg tasks...
September 17, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/28919856/visualizing-hyperactivation-in-neurodegeneration-based-on-prefrontal-oxygenation-a-comparative-study-of-mild-alzheimer-s-disease-mild-cognitive-impairment-and-healthy-controls
#6
Kah Hui Yap, Wei Chun Ung, Esther G M Ebenezer, Nadira Nordin, Pui See Chin, Sandheep Sugathan, Sook Ching Chan, Hung Loong Yip, Masashi Kiguchi, Tong Boon Tang
Background: Cognitive performance is relatively well preserved during early cognitive impairment owing to compensatory mechanisms. Methods: We explored functional near-infrared spectroscopy (fNIRS) alongside a semantic verbal fluency task (SVFT) to investigate any compensation exhibited by the prefrontal cortex (PFC) in Mild Cognitive Impairment (MCI) and mild Alzheimer's disease (AD). In addition, a group of healthy controls (HC) was studied. A total of 61 volunteers (31 HC, 12 patients with MCI and 18 patients with mild AD) took part in the present study...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28912737/neuropsychological-profile-of-specific-executive-dysfunctions-in-patients-with-deficit-and-non-deficit-schizophrenia
#7
Ernest Tyburski, Justyna Pełka-Wysiecka, Monika Mak, Agnieszka Samochowiec, Przemysław Bieńkowski, Jerzy Samochowiec
Objectives: Although it has been shown that there are more profound deficits present in deficit schizophrenia (DS) patients than in non-deficit schizophrenia (NDS) patients, there still remain some matters requiring further investigation. In this context, we formulated three research aims: (1) to compare executive functions between the investigated groups, (2) to determine the relationship between particular aspects of executive functions within the groups, and (3) to draw up a neuropsychological profile for executive functions...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28904971/cognitive-or-cognitive-motor-executive-function-tasks-evaluating-verbal-fluency-measures-in-people-with-parkinson-s-disease
#8
Alessandra Ferreira Barbosa, Mariana Callil Voos, Janini Chen, Debora Cristina Valente Francato, Carolina de Oliveira Souza, Egberto Reis Barbosa, Hsin Fen Chien, Letícia Lessa Mansur
INTRODUCTION: Executive function deficits are observed in people with Parkinson's disease (PD) from early stages and have great impact on daily living activities. Verbal fluency and oral diadochokinesia involve phonarticulatory coordination, response inhibition, and phonological processing and may also be affected in people with PD. This study aimed to describe the performance of PD patients and an age- and education-matched control group on executive function, verbal fluency, and oral diadochokinesia tests and to investigate possible relationships between them...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28900721/effects-of-per3-clock-gene-polymorphisms-on-aging-related-changes-of-the-cerebral-cortex
#9
Delphine Dewandre, Mercedes Atienza, Mayely P Sanchez-Espinosa, Jose L Cantero
Considerable evidence suggests that circadian rhythmicity is progressively disrupted in senescence. Among clock genes, Period3 (PER3) has been associated with circadian phenotypes, homeostatic regulation of sleep, and cognitive performance in young adults. However, the effects of PER3 genotype on aging-related changes in both cognitive function and cortical integrity remain largely unknown. To shed light into this issue, we have investigated differences in cognitive performance, patterns of cortical thickness, and cortical glucose consumption in normal elderly subjects homozygous carriers of the short (PER3(4/4), n = 32) and long repeat alleles (PER3(5/5), n = 32)...
September 12, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28899759/hippocampal-metabolism-and-prefrontal-brain-structure-a-combined-1h-mr-spectroscopy-neuropsychological-and-voxel-based-morphometry-vbm-study
#10
Johanna Steinke, Christian Gaser, Kerstin Langbein, Maren Dietzek, Alexander Gussew, Jürgen R Reichenbach, Stefan Smesny, Heinrich Sauer, Igor Nenadić
Hippocampal structural and functional integrity impacts on multiple remote areas of the brain, and this connectivity is central to multiple cognitive functions in healthy and disease. We studied associations of hippocampal metabolic markers N-acetyl aspartate (NAA) and glutamate (Glu and Glx; assessed with 1H magnetic resonance spectroscopy) and brain grey matter (studied with voxel-based morphometry, VBM) in 20 healthy subjects. We found a significant correlation between right hippocampal NAA and left ventrolateral prefrontal cortical grey matter (TFCE, p<0...
September 9, 2017: Brain Research
https://www.readbyqxmd.com/read/28895997/-elevated-incidence-of-cognitive-impairment-in-patients-with-asymptomatic-carotid-stenosis
#11
E Hernandez-Rodriguez, E Sirumal, P J Perez-Lorensu, J L Perez-Burkhardt, J Barroso, I Galtier
INTRODUCTION: Stroke is one of the main causes of mortality and functional disability in developed countries. Carotid stenosis (CS) is considered the reason for 20-30% of strokes. However, the studies that have gone into depth on the cognitive status of these patients are limited. AIM: To investigate the cognitive performance of CS patients and its relationship with clinical variables (carotid obstruction, lifestyle). PATIENTS AND METHODS: 33 CS patients were evaluated using a broad neuropsychological protocol, and were divided into two groups: symptomatic CS and asymptomatic CS...
September 16, 2017: Revista de Neurologia
https://www.readbyqxmd.com/read/28891505/sleep-microstructure-dynamics-and-neurocognitive-performance-in-obstructive-sleep-apnea-syndrome-patients
#12
Foroozan Karimzadeh, Mohammad Nami, Reza Boostani
The present study examined the relationship between the increment in cyclic alternating patterns (CAPs) in sleep electroencephalography and neurocognitive decline in obstructive Sleep Apnea Syndrome (OSAS) patients through source localization of the phase-A of CAPs. All-night polysomnographic recordings of 10 OSAS patients and 4 control subjects along with their cognitive profile using the Addenbrooke's Cognitive Examination (ACE) test were acquired. The neuropsychological assessment involved five key domains including attention and orientation, verbal fluency, memory, language and visuo-spatial skills...
2017: Journal of Integrative Neuroscience
https://www.readbyqxmd.com/read/28886431/the-effect-of-phonetic-complexity-on-the-speed-of-single-word-productions-in-adults-who-do-and-do-not-stutter
#13
Courtney T Byrd, Geoffrey A Coalson, Jie Yang, Kirsten Moriarty
PURPOSE: The purpose of this study was to investigate the influence of phonetic complexity as measured by the Word Complexity Measure (WCM) on the speed of single-word production in adults who do (AWS, n=15) and do not stutter (AWNS, n=15). METHOD: Participants were required to name pictures of high versus low phonetic complexity and balanced for lexical properties. Speech reaction time was recorded from initial presentation of the picture to verbal response of participant for each word type...
June 16, 2017: Journal of Communication Disorders
https://www.readbyqxmd.com/read/28877864/internet-searches-and-their-relationship-to-cognitive-function-in-older-adults-cross-sectional-analysis
#14
Johanna Austin, Kristy Hollingshead, Jeffrey Kaye
BACKGROUND: Alzheimer disease (AD) is a very challenging experience for all those affected. Unfortunately, detection of Alzheimer disease in its early stages when clinical treatments may be most effective is challenging, as the clinical evaluations are time-consuming and costly. Recent studies have demonstrated a close relationship between cognitive function and everyday behavior, an avenue of research that holds great promise for the early detection of cognitive decline. One area of behavior that changes with cognitive decline is language use...
September 6, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28877653/why-do-older-adults-have-difficulty-with-semantic-fluency
#15
Jean K Gordon, Megan Young, Carly Garcia
Aging involves many cognitive declines, particularly in fluid intelligence, with relative maintenance of crystallized intelligence. This paradox is evident in the language domain: lexical retrieval becomes slower and less accurate, despite well preserved vocabularies. Verbal fluency assesses both crystallized and fluid aspects of language. Semantic fluency hypothetically reflects semantic knowledge, while letter fluency putatively reflects executive functioning, which would predict a greater impact of aging on the latter...
September 6, 2017: Neuropsychology, Development, and Cognition. Section B, Aging, Neuropsychology and Cognition
https://www.readbyqxmd.com/read/28875464/changes-in-tryptophan-catabolite-trycat-pathway-patterning-are-associated-with-mild-impairments-in-declarative-memory-in-schizophrenia-and-deficits-in-semantic-and-episodic-memory-coupled-with-increased-false-memory-creation-in-deficit-schizophrenia
#16
Buranee Kanchanatawan, Solaphat Hemrungrojn, Supaksorn Thika, Sunee Sirivichayakul, Kiat Ruxrungtham, André F Carvalho, Michel Geffard, George Anderson, Michael Maes
Evidence indicates that schizophrenia and in particular negative symptoms and deficit schizophrenia are accompanied by neurocognitive impairments and changes in the patterning of the tryptophan catabolite (TRYCAT) pathway. This cross-sectional study was carried out to examine the associations between cognitive functions (as measured with Consortium to Establish a Registry for Alzheimer's disease (CERAD)) and TRYCAT pathway patterning in patients with (n = 40) and without (n = 40) deficit schizophrenia and normal controls (n = 40)...
September 5, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28874742/global-local-processing-relates-to-spatial-and-verbal-processing-implications-for-sex-differences-in-cognition
#17
Belinda Pletzer, Andrea Scheuringer, Thomas Scherndl
Sex differences have been reported for a variety of cognitive tasks and related to the use of different cognitive processing styles in men and women. It was recently argued that these processing styles share some characteristics across tasks, i.e. male approaches are oriented towards holistic stimulus aspects and female approaches are oriented towards stimulus details. In that respect, sex-dependent cognitive processing styles share similarities with attentional global-local processing. A direct relationship between cognitive processing and global-local processing has however not been previously established...
September 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28870585/medical-decision-making-capacity-and-its-cognitive-predictors-in-progressive-ms-preliminary-evidence
#18
Adam Gerstenecker, Kathleen Lowry, Terina Myers, Khurram Bashir, Kristen L Triebel, Roy C Martin, Daniel C Marson
BACKGROUND: Medical decision-making capacity (MDC) refers to the ability to make informed decisions about treatment and declines in cognition are associated with declines in MDC across multiple disease entities. However, although it is well known that cognitive impairment is prevalent in multiple sclerosis (MS), little is known about MDC in the disease. METHODS: Data from 22 persons with progressive MS and 18 healthy controls were analyzed. All diagnoses were made by a board-certified neurologist with experience in MS...
September 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28868081/cognitive-performance-in-euthymic-patients-with-bipolar-disorder-vs-healthy-controls-a-neuropsychological-investigation
#19
M Carlotta Palazzo, Chiara Arici, Laura Cremaschi, Marta Cristoffanini, Cristina Dobrea, Bernardo Dell'Osso, A Carlo Altamura
OBJECTIVES: Cognitive impairment may affect patients with Bipolar Disorder (BD) beyond the acute episodes, qualifying as a potential endophenotype. However, which cognitive domains are specifically affected in euthymic patients with BD and the potential influence of confounding factors (e.g., age and concomitant pharmacological treatment) are still a matter of debate. The present study was, therefore, conducted to assess cognitive performance across specific domains in euthymic bipolar patients, not older than 50 years (to avoid potential age-related bias) versus healthy controls (HCs)...
2017: Clinical Practice and Epidemiology in Mental Health: CP & EMH
https://www.readbyqxmd.com/read/28867517/schizophrenia-and-creativity-a-meta-analytic-review
#20
Selcuk Acar, Xiao Chen, Nur Cayirdag
The present study investigated the relationship between creativity and schizophrenia with a 3-level multilevel meta-analytic approach. Analyses with 200 effect sizes obtained from 42 studies found a mean effect size of r=-0.324, 95%CI [-0.42, -0.23]. Further analyses focused on moderators and indicated that the relationship between schizophrenia and creativity is moderated by type of creativity measure, the content of creativity measure, the severity of schizophrenia, and patient status. The negative mean effect size was stronger with semantic-category or verbal-letter fluency tasks than the divergent thinking or associational measures...
August 31, 2017: Schizophrenia Research
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