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https://www.readbyqxmd.com/read/29751017/differential-contributions-of-cortical-thickness-and-surface-area-to-trait-impulsivity-in-healthy-young-adults
#1
Katharina M Kubera, Mike M Schmitgen, Klaus H Maier-Hein, Philipp A Thomann, Dusan Hirjak, Robert C Wolf
BACKGROUND: Impulsivity is an essential human personality trait and highly relevant for the development of several mental disorders. There is evidence that impulsivity is heritable, yet little is known about neural correlates reflecting early brain development. Here, we address the question whether motor, attentional and non-planning components, as reflected by the Barratt Impulsiveness Scale (BIS-11), are distinctly associated with cortical thickness and surface area variations in young healthy individuals...
May 8, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/29673722/density-spectral-array-of-bis-vista%C3%A2-monitoring-system-in-a-functional-hemispherectomy
#2
C Luis, E Vilà, L Moltó, A Pardo, J L Fernández Candila, S Pacreu
We present the case of an adult patient with drug-resistant epilepsy caused by extensive inflammation in the right cerebral hemisphere. She was scheduled to undergo right functional hemispherectomy, which is common in pediatric surgery, but about which few studies have been published with respect to adult patients. During the intraoperative period, the density spectral array of the bilateral bispectral index (BIS) VISTATM monitoring system was used. We observed a power increase in low frequency (0.1-4Hz) and alpha bands (8-12Hz) in the right hemisphere, where the epileptogenic focus was...
April 16, 2018: Revista Española de Anestesiología y Reanimación
https://www.readbyqxmd.com/read/29527497/dysfunctional-frontal-lobe-activity-during-inhibitory-tasks-in-individuals-with-childhood-trauma-an-event-related-potential-study
#3
Sungkean Kim, Ji Sun Kim, Min Jin Jin, Chang-Hwan Im, Seung-Hwan Lee
Background: Individuals who experience childhood trauma are vulnerable to various psychological and behavioral problems throughout their lifetime. This study aimed to investigate whether individuals with childhood trauma show altered frontal lobe activity during response inhibition tasks. Methods: In total, 157 healthy individuals were recruited and instructed to perform a Go/Nogo task during electroencephalography recording. Source activities of N2 and P3 of Nogo event-related potentials (ERP) were analyzed...
2018: NeuroImage: Clinical
https://www.readbyqxmd.com/read/29484257/high-definition-transcranial-direct-current-stimulation-hd-tdcs-of-left-dorsolateral-prefrontal-cortex-affects-performance-in-balloon-analogue-risk-task-bart
#4
Heng Guo, Zhuoran Zhang, Shu Da, Xiaotian Sheng, Xichao Zhang
Background: Studies on risk preferences have long been of great concern and have examined the neural basis underlying risk-based decision making. However, studies using conventional transcranial direct current stimulation (tDCS) revealed that bilateral stimulation could change risk propensity with limited evidence of precisely focalized unilateral high-definition transcranial direct current stimulation (HD-tDCS). The aim of this experiment was to investigate the effect of HD-tDCS focalizing the left dorsal lateral prefrontal cortex (DLPFC) on risk-taking behavior during the Balloon Analogue Risk Task (BART)...
February 2018: Brain and Behavior
https://www.readbyqxmd.com/read/29416470/bilateral-bispectral-index-monitoring-to-detect-cerebral-hypoperfusion-during-carotid-endarterectomy-under-general-anesthesia
#5
Jin Xi Zheng
The bilateral use of bispectral index (BIS) monitoring in a 68-year-old male who underwent right carotid endarterectomy (CEA) under general anesthesia (GA) is described. During three episodes of right internal carotid artery cross-clamping intraoperatively, the right BIS value rose relative to the left within 1 min of clamping, followed by a return to baseline within 1-2 min of clamp release. Since unilateral BIS values can decrease or increase in response to cross-clamping, a significant difference in left and right BIS values may provide a simple and easily available method to detect cerebral hypoperfusion during CEA under GA...
January 2018: Saudi Journal of Anaesthesia
https://www.readbyqxmd.com/read/29409776/the-validation-of-simplified-eeg-derived-from-the-bispectral-index-monitor-in-post-cardiac-arrest-patients
#6
Jolien Haesen, Ward Eertmans, Cornelia Genbrugge, Ingrid Meex, Jelle Demeestere, Margot Vander Laenen, Willem Boer, Dieter Mesotten, Jo Dens, Frank Jans, Ludovic Ernon, Cathy De Deyne
AIMS: We aimed to validate retrospectively the accuracy of simplified electroencephalography (EEG) monitoring derived from the bispectral index (BIS) monitor in post-cardiac arrest (CA) patients. METHODS: Successfully resuscitated CA patients were transferred to the Catherization Lab followed by percutaneous coronary intervention when indicated. On arrival at the coronary care unit, bilateral BIS monitoring was started and continued up to 72 h. Raw simplified EEG tracings were extracted from the BIS monitor at a time point coinciding with the registration of standard EEG monitoring...
May 2018: Resuscitation
https://www.readbyqxmd.com/read/29318860/-effect-of-transcutaneous-acupoint-electrical-stimulation-on-hemodynamic-fluctuation-caused-by-loosing-tourniquet-in-elderly-patients-undergoing-knee-joint-replacement
#7
Han-Sheng Liang, Yi Feng
OBJECTIVE: To observe the effect of transcutaneous acupoint electrical stimulation (TAES) on hemodynamic fluctuation caused by loosing tourniquet in the elderly patients undergoing knee joint replacement. METHODS: A total of 60 ASA (America Society Anesthesiologist) I or II elderly patients for elective knee joint replacement surgery were randomly divided into control group (30 cases) and TAES group (30 cases). Patients of both groups were treated by intravenous anesthesia, and monitored with bispectral index (BIS, between 45-60) for anesthesia depth, stroke volume variation (SVV) for fluid management, mean arterial pressure (MAP) and cardiac index (CI) for hemodynamic fluctuation evaluation, and with analgesia nociception index (ANI, between 50-70) for remifentanil dosage adjustment...
December 25, 2017: Zhen Ci Yan Jiu, Acupuncture Research
https://www.readbyqxmd.com/read/28958609/the-importance-of-bilateral-monitoring-of-cerebral-oxygenation-nirs-clinical-case-of-asymmetry-during-cardiopulmonary-bypass-secondary-to-previous-cerebral-infarction
#8
S Matcan, P Sanabria Carretero, M Gómez Rojo, L Castro Parga, F Reinoso-Barbero
Cerebral oximetry based on near infrared spectroscopy (NIRS) technology is used to determine cerebral tissue oxygenation. We hereby present the clinical case of a 12-month old child with right hemiparesis secondary to prior left middle cerebral artery stroke 8 months ago. The child underwent surgical enlargement of the right ventricular outflow tract (RVOT) with cardiopulmonary bypass. During cardiopulmonary bypass, asymmetric NIRS results were detected between both hemispheres. The utilization of multimodal neuromonitoring (NIRS-BIS) allowed acting on both perfusion pressure and anesthetic depth to balance out the supply and demand of cerebral oxygen consumption...
March 2018: Revista Española de Anestesiología y Reanimación
https://www.readbyqxmd.com/read/28830480/recorded-time-periods-of-bispectral-index-values-equal-to-zero-predict-neurological-outcome-after-out-of-hospital-cardiac-arrest
#9
Ward Eertmans, Cornelia Genbrugge, Gilles Haesevoets, Jo Dens, Willem Boer, Frank Jans, Cathy De Deyne
BACKGROUND: Prognostication in out-of-hospital cardiac arrest (OHCA) survivors is often difficult. Recent studies have shown the predictive ability of bispectral index (BIS) monitoring to assist with early neuroprognostication. The aim of this study was to investigate whether characteristics of BIS values equal to zero (BIS 0) (i.e. duration and/or uni- versus bilateral presence) instead of simply their occurrence are better indicators for poor neurological outcome after OHCA by aiming at a specificity of 100%...
August 22, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28729647/neural-determinants-of-human-goal-directed-vs-habitual-action-control-and-their-relation-to-trait-motivation
#10
Hamdi Eryilmaz, Anais Rodriguez-Thompson, Alexandra S Tanner, Madeline Giegold, Franklin C Huntington, Joshua L Roffman
Instrumental learning is mediated by goal-directed and habit systems in the brain. While rodent studies implicate distinct prefrontal/striatal regions in goal-directed and habit learning, neural systems underpinning these two processes in humans remain poorly understood. Here, using a validated discrimination learning task that distinguishes goal-directed learning from habit learning in 72 subjects in fMRI, we investigated the corticostriatal correlates of goal-directed learning and tested whether brain activation during learning is associated with trait motivation and behavioral performance in the post-learning test phase...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28616347/intraoperative-care-for-aortic-surgery-using-circulatory-arrest
#11
REVIEW
Félix Ezequiel Fernández Suárez, David Fernández Del Valle, Adrián González Alvarez, Blanca Pérez-Lozano
The total circulatory arrest (CA) is necessary to achieve optimal surgical conditions in certain aortic pathologies, especially in those affecting the ascending aorta and aortic arch. During this procedure it is necessary to protect all the organs of ischemia, especially those of the central nervous system and for this purpose several strategies have been developed. The first and most important protective method is systemic hypothermia. The degree of hypothermia and the route of application have been evolving and currently tend to use moderate hypothermia (MH) (20...
May 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28566874/bilateral-complete-and-incomplete-fusion-of-incisors-and-its-management
#12
Godwin Clovis Da Costa, Paul Chalakkal, Neil De Souza, Sanket Gavhane
This case report highlights the management of a case of bilateral complete and incomplete fusion of maxillary incisors in a 10-year-old child. A mock-up was done on the diagnostic cast. Pretreatment esthetic evaluation was done using bis-acryl composite temporaries which were transferred intraorally from the diagnostic cast using a putty index. An incisal overlap veneer preparation was done, following which, an IPS e-max veneer was cemented. A digital mock-up was carried out using the Adobe Photoshop and Corel Draw softwares to aid in laboratorial fabrication of the veneer...
January 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/28402539/associating-resting-state-connectivity-with-trait-impulsivity
#13
Nicholas H Angelides, Jayesh Gupta, Timothy J Vickery
Psychometric research has identified stable traits that predict inter-individual differences in appetitive motivation and approach behavior. Behavioral Inhibition System/Behavioral Activation System (BIS/BAS) scales have been developed to quantitatively assess these traits. However, neural mechanisms corresponding to the proposed constructs reflected in BIS/BAS are still poorly defined. The ventral striatum (VS) and orbitofrontal cortex (OFC) are implicated in subserving reward-related functions that are also associated with the BAS...
June 1, 2017: Social Cognitive and Affective Neuroscience
https://www.readbyqxmd.com/read/28217053/the-bilateral-bispectral-and-the-composite-variability-indexes-during-anesthesia-for-unilateral-surgical-procedure
#14
Pedro Lopes-Pimentel, Maylin Koo, Javier Bocos, Antoni Sabaté
BACKGROUND: The composite variability index (CVI), derived from the bispectral analysis (BIS), has been designed to detect nociception; however, there is no evidence that bilateral BIS and CVI show intrapatient reproducibility or variability. METHODS: We conducted an observational study in patients who underwent for total knee arthroplasty. A BIS Bilateral Sensor was applied and continuously recorded at different points of the anesthesia procedure. Bland-Altman limits of agreement and dispersion for BIS and for CVI were applied...
January 2017: Saudi Journal of Anaesthesia
https://www.readbyqxmd.com/read/28185093/altered-spontaneous-brain-activity-in-adolescent-boys-with-pure-conduct-disorder-revealed-by-regional-homogeneity-analysis
#15
Qiong Wu, Xiaocui Zhang, Daifeng Dong, Xiang Wang, Shuqiao Yao
Functional magnetic resonance imaging (fMRI) studies have revealed abnormal neural activity in several brain regions of adolescents with conduct disorder (CD) performing various tasks. However, little is known about the spontaneous neural activity in people with CD in a resting state. The aims of this study were to investigate CD-associated regional activity abnormalities and to explore the relationship between behavioral impulsivity and regional activity abnormalities. Resting-state fMRI (rs-fMRI) scans were administered to 28 adolescents with CD and 28 age-, gender-, and IQ-matched healthy controls (HCs)...
July 2017: European Child & Adolescent Psychiatry
https://www.readbyqxmd.com/read/27667777/networks-underlying-trait-impulsivity-evidence-from-voxel-based-lesion-symptom-mapping
#16
Valerie McDonald, Katherina K Hauner, Aileen Chau, Frank Krueger, Jordan Grafman
Impulsivity is considered a multidimensional construct that encompasses a range of behaviors, including poor impulse control, premature decision-making, and the inability to delay gratification. In order to determine the extent to which impulsivity and its components share a common network, a voxel-based lesion-symptom mapping (VLSM) analysis was performed in a large sample of patients (N = 131) with focal, penetrating traumatic brain injuries (pTBI). Impulsivity was assessed using the Barratt Impulsiveness Scale (BIS-11), a standard self-report measure that allows for unique estimates of global impulsivity and its factor analysis-derived components (e...
February 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/27397858/derivatization-strategy-for-the-comprehensive-characterization-of-endogenous-fatty-aldehydes-using-hplc-multiple-reaction-monitoring
#17
Cai Tie, Ting Hu, Zhi-Xin Jia, Jin-Lan Zhang
Fatty aldehydes are crucial substances that mediate a wide range of vital physiological functions, particularly lipid peroxidation. Fatty aldehydes such as acrolein and 4-hydroxynonenal (4-HNE) are considered potential biomarkers of myocardial ischemia and dementia, but analytical techniques for fatty aldehydes are lacking. In the present study, a comprehensive characterization strategy with high sensitivity and facility for fatty aldehydes based on derivatization and high-performance liquid chromatography-multiple reaction monitoring (HPLC-MRM) was developed...
August 2, 2016: Analytical Chemistry
https://www.readbyqxmd.com/read/27329520/larger-corpus-callosum-and-reduced-orbitofrontal-cortex-homotopic-connectivity-in-codeine-cough-syrup-dependent-male-adolescents-and-young-adults
#18
Ying-Wei Qiu, Xiao-Fei Lv, Gui-Hua Jiang, Huan-Huan Su, Xiao-Fen Ma, Jun-Zhang Tian, Fu-Zhen Zhuo
OBJECTIVES: To characterize interhemispheric functional and anatomical connectivity and their relationships with impulsive behaviour in codeine-containing cough syrup (CCS)-dependent male adolescents and young adults. METHODS: We compared volumes of corpus callosum (CC) and its five subregion and voxel-mirrored homotopic functional connectivity (VMHC) in 33 CCS-dependent male adolescents and young adults and 38 healthy controls, group-matched for age, education and smoking status...
March 2017: European Radiology
https://www.readbyqxmd.com/read/27199831/altered-gray-matter-volume-and-white-matter-integrity-in-college-students-with-mobile-phone-dependence
#19
Yongming Wang, Zhiling Zou, Hongwen Song, Xiaodan Xu, Huijun Wang, Federico d'Oleire Uquillas, Xiting Huang
Mobile phone dependence (MPD) is a behavioral addiction that has become an increasing public mental health issue. While previous research has explored some of the factors that may predict MPD, the underlying neural mechanisms of MPD have not been investigated yet. The current study aimed to explore the microstructural variations associated with MPD as measured with functional Magnetic Resonance Imaging (fMRI). Gray matter volume (GMV) and white matter (WM) integrity [four indices: fractional anisotropy (FA); mean diffusivity (MD); axial diffusivity (AD); and radial diffusivity (RD)] were calculated via voxel-based morphometry (VBM) and tract-based spatial statistics (TBSS) analysis, respectively...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/26858620/altered-structural-correlates-of-impulsivity-in-adolescents-with-internet-gaming-disorder
#20
Xin Du, Xin Qi, Yongxin Yang, Guijin Du, Peihong Gao, Yang Zhang, Wen Qin, Xiaodong Li, Quan Zhang
Recent studies suggested that internet gaming disorder (IGD) was associated with impulsivity and structural abnormalities in brain gray matter (GM). However, no morphometric study has examined the association between GM and impulsivity in IGD individuals. In this study, 25 adolescents with IGD and 27 healthy controls (HCs) were recruited, and the relationship between Barratt impulsiveness scale-11 (BIS) score and gray matter volume (GMV) was investigated with the voxel-based morphometric (VBM) correlation analysis...
2016: Frontiers in Human Neuroscience
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