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https://www.readbyqxmd.com/read/28227553/transfer-learning-with-large-scale-data-in-brain-computer-interfaces
#1
Chun-Shu Wei, Yuan-Pin Lin, Yu-Te Wang, Chin-Teng Lin, Tzyy-Ping Jung, Chun-Shu Wei, Yuan-Pin Lin, Yu-Te Wang, Chin-Teng Lin, Tzyy-Ping Jung, Yuan-Pin Lin, Yu-Te Wang, Tzyy-Ping Jung, Chin-Teng Lin, Chun-Shu Wei
Human variability in electroencephalogram (EEG) poses significant challenges for developing practical real-world applications of brain-computer interfaces (BCIs). The intuitive solution of collecting sufficient user-specific training/calibration data can be very labor-intensive and time-consuming, hindering the practicability of BCIs. To address this problem, transfer learning (TL), which leverages existing data from other sessions or subjects, has recently been adopted by the BCI community to build a BCI for a new user with limited calibration data...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226468/from-good-intentions-to-healthy-habits-towards-integrated-computational-models-of-goal-striving-and-habit-formation
#2
Peter Pirolli, Peter Pirolli, Peter Pirolli
Computational models were developed in the ACT-R neurocognitive architecture to address some aspects of the dynamics of behavior change. The simulations aim to address the day-to-day goal achievement data available from mobile health systems. The models refine current psychological theories of self-efficacy, intended effort, and habit formation, and provide an account for the mechanisms by which goal personalization, implementation intentions, and remindings work.
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226433/preliminary-results-of-residual-deficits-observed-in-athletes-with-concussion-history-combined-eeg-and-cognitive-study
#3
Tamanna T K Munia, Jeffrey L Gendreau, Ajay K Verma, Benjamin D Johnson, Mark Romanick, Kouhyar Tavakolian, Reza Fazel-Rezai, Tamanna T K Munia, Jeffrey L Gendreau, Ajay K Verma, Benjamin D Johnson, Mark Romanick, Kouhyar Tavakolian, Reza Fazel-Rezai, Reza Fazel-Rezai, Jeffrey L Gendreau, Benjamin D Johnson, Tamanna T K Munia, Ajay K Verma, Kouhyar Tavakolian, Mark Romanick
Assessment, treatment, and management of sport-related concussions are a widely recognized public health issue. Although several neuropsychological and motor assessment tools have been developed and implemented for sports teams at various levels and ages, the sensitivity of these tests has yet to be validated with more objective measures to make return-to-play (RTP) decisions more confidently. The present study sought to analyze the residual effect of concussions on a sample of adolescent athletes who sustained one or more previous concussions compared to those who had no concussion history...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225719/brief-report-cd14-enriched-peripheral-cells-secrete-cytokines-unique-to-hiv-associated-neurocognitive-disorders
#4
Melissa A Agsalda-Garcia, Pasiri Sithinamsuwan, Victor G Valcour, Thep Chalermchai, Somporn Tipsuk, Jason Kuroda, Christie Nakamura, Jintanat Ananworanich, Guangxiang Zhang, Alexandra Schuetz, Bonnie M Slike, Bruce Shiramizu
Monocytes play a vital role in HIV-associated neurocognitive disorder (HAND), postulated to transport HIV into the brain and secrete pro-inflammatory cytokines. We analyzed cytokines released by cultured peripheral blood mononuclear cells enriched with the CD14 marker isolated from HIV-infected individuals with HAND and normal cognition (NC) in combination antiretroviral therapy naive and after 1 year on treatment. Interleukin-8 and monocyte chemoattractant protein-1 levels were higher in HAND compared with NC at baseline (P = 0...
April 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28224622/slc2a3-single-nucleotide-polymorphism-and-duplication-influence-cognitive-processing-and-population-specific-risk-for-attention-deficit-hyperactivity-disorder
#5
Sören Merker, Andreas Reif, Georg C Ziegler, Heike Weber, Ute Mayer, Ann-Christine Ehlis, Annette Conzelmann, Stefan Johansson, Clemens Müller-Reible, Indrajit Nanda, Thomas Haaf, Reinhard Ullmann, Marcel Romanos, Andreas J Fallgatter, Paul Pauli, Tatyana Strekalova, Charline Jansch, Alejandro Arias Vasquez, Jan Haavik, Marta Ribasés, Josep Antoni Ramos-Quiroga, Jan K Buitelaar, Barbara Franke, Klaus-Peter Lesch
BACKGROUND: Attention-deficit/hyperactivity disorder (ADHD) is a common, highly heritable neurodevelopmental disorder with profound cognitive, behavioral, and psychosocial impairments with persistence across the life cycle. Our initial genome-wide screening approach for copy number variants (CNVs) in ADHD implicated a duplication of SLC2A3, encoding glucose transporter-3 (GLUT3). GLUT3 plays a critical role in cerebral glucose metabolism, providing energy for the activity of neurons, which, in turn, moderates the excitatory-inhibitory balance impacting both brain development and activity-dependent neural plasticity...
February 22, 2017: Journal of Child Psychology and Psychiatry, and Allied Disciplines
https://www.readbyqxmd.com/read/28224457/elevated-outcome-anticipation-and-outcome-evaluation-erps-associated-with-a-greater-preference-for-larger-but-delayed-rewards
#6
Narun Pornpattananangkul, Ajay Nadig, Storm Heidinger, Keegan Walden, Robin Nusslock
Although waiting for a reward reduces or discounts its value, some people have a stronger tendency to wait for larger rewards and forgo smaller-but-immediate rewards. This ability to delay gratification is captured by individual differences in so-called intertemporal choices in which individuals are asked to choose between larger-but-delayed versus smaller-but-immediate rewards. The current study used event-related potentials (ERPs) to examine whether enhancement in two neurocognitive processes, outcome anticipation and outcome evaluation, modulate individual variability in intertemporal responses...
February 21, 2017: Cognitive, Affective & Behavioral Neuroscience
https://www.readbyqxmd.com/read/28224137/hmgb1-anti-hmgb1-antibodies-define-a-molecular-signature-of-early-stages-of-hiv-associated-neurocognitive-isorders-hand
#7
Marie-Lise Gougeon, Béatrice Poirier-Beaudouin, Jacques Durant, Christine Lebrun-Frenay, Héla Saïdi, Valérie Seffer, Michel Ticchioni, Stephane Chanalet, Helene Carsenti, Alexandra Harvey-Langton, Muriel Laffon, Jacqueline Cottalorda, Christian Pradier, Pierre Dellamonica, Matteo Vassallo
BACKGROUND: HIV-associated neurocognitive disorders (HAND) persist in the post-HAART era, characterized by asymptomatic neurocognitive impairment (ANI) and mild neurocognitive disorders (MND). High mobility group box 1 (HMGB1) is a non-histone chromosomal protein widely expressed in the nucleus of all eukaryotic cells, including brain cells, which acts as a potent proinflammatory cytokine when actively secreted from immune cells. Recent reports suggested that HMGB1 acts on microglial cells to promote neuroinflammation...
February 2017: Heliyon
https://www.readbyqxmd.com/read/28224079/altered-structural-brain-changes-and-neurocognitive-performance-in-pediatric-hiv
#8
Santosh K Yadav, Rakesh K Gupta, Ravindra K Garg, Vimala Venkatesh, Pradeep K Gupta, Alok K Singh, Sheema Hashem, Asma Al-Sulaiti, Deepak Kaura, Ena Wang, Francesco M Marincola, Mohammad Haris
Pediatric HIV patients often suffer with neurodevelopmental delay and subsequently cognitive impairment. While tissue injury in cortical and subcortical regions in the brain of adult HIV patients has been well reported there is sparse knowledge about these changes in perinatally HIV infected pediatric patients. We analyzed cortical thickness, subcortical volume, structural connectivity, and neurocognitive functions in pediatric HIV patients and compared with those of pediatric healthy controls. With informed consent, 34 perinatally infected pediatric HIV patients and 32 age and gender matched pediatric healthy controls underwent neurocognitive assessment and brain magnetic resonance imaging (MRI) on a 3 T clinical scanner...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28222517/association-of-central-arterial-stiffness-and-pressure-pulsatility-with-mild-cognitive-impairment-and-dementia-the-atherosclerosis-risk-in-communities-study-neurocognitive-study-aric-ncs
#9
Michelle L Meyer, Priya Palta, Hirofumi Tanaka, Jennifer A Deal, Jacqueline Wright, David S Knopman, Michael Griswold, Thomas H Mosley, Gerardo Heiss
BACKGROUND: The association of central arterial stiffness and pressure pulsatility with mild cognitive impairment (MCI) and dementia is not well characterized in the population-based setting. OBJECTIVE: The aim of this study was to quantify the cross-sectional association of arterial stiffness and pressure pulsatility with MCI and dementia among 4,461 older white and black adults from the population-based Atherosclerosis Risk in Communities Study-Neurocognitive Study...
February 10, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28222510/visuospatial-functioning-in-cerebral-amyloid-angiopathy-a-pilot-study
#10
Raffaella Valenti, Andreas Charidimou, Li Xiong, Gregoire Boulouis, Panagiotis Fotiadis, Alison Ayres, Grace Riley, Hugo J Kuijf, Yael D Reijmer, Leonardo Pantoni, M Edip Gurol, Sigurros Davidsdottir, Steven M Greenberg, Anand Viswanathan
Cerebral amyloid angiopathy (CAA) is a contributor to cognitive impairment in the elderly. We hypothesized that the posterior cortical predilection of CAA would cause visual-processing impairment. We systematically evaluated visuospatial abilities in 22 non-demented CAA patients. Neurocognitive evaluation demonstrated visuoperceptual impairment (23% on Benton Facial Recognition Test [BFRT] and 13.6% on Benton Judgment of Line Orientation Test [BJLO]). BFRT was inversely correlated with white matter hyperintensities volume and BJLO with parietal cerebral microbleeds...
February 7, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28222173/back-to-basics-the-effects-of-block-vs-interleaved-trial-administration-on-pro-and-anti-saccade-performance
#11
Liran Zeligman, Ari Z Zivotofsky
The pro and anti-saccade task (PAT) is a widely used tool in the study of overt and covert attention with promising potential role in neurocognitive and psychiatric assessment. However, specific PAT protocols can vary significantly between labs, potentially resulting in large variations in findings across studies. In light of recent calls towards a standardization of PAT the current study's objective was to systematically and purposely evaluate the effects of block vs. interleaved administration-a fundamental consideration-on PAT measures in a within subject design...
2017: PloS One
https://www.readbyqxmd.com/read/28221821/enhanced-neural-activation-with-blueberry-supplementation-in-mild-cognitive-impairment
#12
Erin L Boespflug, James C Eliassen, Jonathan A Dudley, Marcelle D Shidler, Wilhelmina Kalt, Suzanne S Summer, Amanda L Stein, Amanda N Stover, Robert Krikorian
OBJECTIVES: Preclinical studies have shown that blueberry supplementation can improve cognitive performance and neural function in aged animals and have identified associations between anthocyanins and such benefits. Preliminary human trials also suggest cognitive improvement in older adults, although direct evidence of enhancement of brain function has not been demonstrated. In this study, we investigated the effect of blueberry supplementation on regional brain activation in older adults at risk for dementia...
February 21, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28219828/treating-cognitive-impairment-with-transcranial-low-level-laser-therapy
#13
Jack C de la Torre
This report examines the potential of low level laser therapy (LLLT) to alter brain cell function and neurometabolic pathways using red or near infrared (NIR) wavelengths transcranially for the prevention and treatment of cognitive impairment. Although laser therapy on human tissue has been used for a number of medical conditions since the late 1960s, it is only recently that several clinical studies have shown its value in raising neurometabolic energy levels that can improve cerebral hemodynamics and cognitive abilities in humans...
February 13, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28219653/the-neurocognitive-basis-of-borrowed-context-information
#14
Meagan O'Neill, Rachel A Diana
Falsely remembered items can be accompanied by episodic context retrieval. This finding is difficult to explain because there is no episode that binds the remembered item to the experimenter-controlled context features. The current study examines the neural correlates of false context retrieval when the context features can be traced to encoding episodes of semantically-similar items. Our neuroimaging results support a "dissociated source" mechanism for context borrowing in false memory. We found that parahippocampal cortex (PHc) activation, thought to indicate context retrieval, was greater during trials that involved context borrowing (an incorrect, but plausible source decision) than during baseline correct context retrieval...
January 30, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28219455/clinical-and-therapeutic-role-of-mentalization-in-schizophrenia-a-review
#15
Trisevgeni Dimopoulou, Frank I Tarazi, Evangelia M Tsapakis
Recent empirical findings from clinical and genetic studies suggest that mentalization, a key area of social cognition, is a distinct construct, although it is closely related to the neurocognitive deficits and symptoms of schizophrenia. Mentalization contributes a great deal to impaired social functioning. Current measures often display methodological problems, and many aspects should be taken into account when assessing mentalization. Moreover, advances in cognitive and affective neurosciences have led to the development of more advanced behavioral methods to assess the relationship between cognitive functions, symptoms, and social cognition based on their underlying neural mechanisms...
February 21, 2017: CNS Spectrums
https://www.readbyqxmd.com/read/28215426/the-impact-of-transsphenoidal-surgery-on-neurocognitive-function-a-systematic-review
#16
REVIEW
Adnan Alsumali, David J Cote, Quentin R Regestein, Erin Crocker, Abdulaziz Alzarea, Hasan A Zaidi, Wenya Linda Bi, Hassan Y Dawood, Marike L Broekman, Martine J E van Zandvoort, Rania A Mekary, Timothy R Smith
BACKGROUND: Cognitive impairment following transsphenoidal surgery (TSS) among patients with pituitary tumors has been intermittently reported and is not well established. We performed a systematic review to summarize the impact of TSS on cognitive function. METHODS: We conducted a systematic search of the literature using the PubMed, Cochrane, and Embase databases through October 2014. Studies were selected if they reported cognitive status after surgery and included at least 10 adult patients with pituitary tumors undergoing either endoscopic or microscopic TSS...
February 15, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28215253/early-features-associated-with-the-neurocognitive-development-at-36-months-of-age-the-aube-study
#17
Sabine Plancoulaine, Camille Stagnara, Sophie Flori, Flora Bat-Pitault, Jian-Sheng Lin, Hugues Patural, Patricia Franco
BACKGROUND: Few studies on the relations between sleep quantity and/or quality and cognition have been conducted among preschoolers from healthy general population. We aimed at identifying, among 36 months old children, early factors associated with intelligence quotient (IQ) estimated through the Weschler Preschool and Primary Scale Intelligence-III test and its indicators: Full-Scale-, Verbal- and Performance-IQs and their subscale scores. METHODS: We included 194 children from the French birth cohort AuBE with both available Weschler Preschool and Primary Scale Intelligence-III scores at three years and sleep data...
February 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28214420/prevention-of-radiotherapy-induced-neurocognitive-dysfunction-in-survivors-of-paediatric-brain-tumours-the-potential-role-of-modern-imaging-and-radiotherapy-techniques
#18
REVIEW
Thankamma Ajithkumar, Stephen Price, Gail Horan, Amos Burke, Sarah Jefferies
Neurocognitive dysfunction is the leading cause of reduced quality of life in long-term survivors of paediatric brain tumours. Radiotherapy is one of the main contributors to neurocognitive sequelae. Current approaches for prevention and reduction of neurocognitive dysfunction include avoidance of radiotherapy in young children and reduction of the radiotherapy dose and volume of brain irradiated. Substantial advances have been made in brain imaging, especially with functional imaging and fibre tracking with the use of diffusion tensor imaging...
February 2017: Lancet Oncology
https://www.readbyqxmd.com/read/28214391/correlates-of-willingness-to-initiate-pre-exposure-prophylaxis-and-anticipation-of-practicing-safer-drug-and-sex-related-behaviors-among-high-risk-drug-users-on-methadone-treatment
#19
Roman Shrestha, Pramila Karki, Frederick L Altice, Tania B Huedo-Medina, Jaimie P Meyer, Lynn Madden, Michael Copenhaver
BACKGROUND: Although people who use drugs (PWUD) are key populations recommended to receive pre-exposure prophylaxis (PrEP) to prevent HIV, few data are available to guide PrEP delivery in this underserved group. We therefore examined the willingness to initiate PrEP and the anticipation of HIV risk reduction while on PrEP among high-risk PWUD. METHODS: In a cross-sectional study of 400 HIV-negative, opioid dependent persons enrolled in a methadone program and reporting recent risk behaviors, we examined independent correlates of being willing to initiate PrEP...
February 2, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28212984/hiv-1-vpr-disrupts-mitochondria-axonal-transport-and-accelerates-neuronal-aging
#20
Ying Wang, Maryline Santerre, Italo Tempera, Kayla Martin, Ruma Mukerjee, Bassel E Sawaya
Disruption of mitochondria axonal transport, essential for the maintenance of synaptic and neuronal integrity and function, has been identified in neurodegenerative diseases. Whether HIV-1 viral proteins affect mitochondria axonal transport is unknown, albeit HIV-associated neurocognitive disorders occur in around half of the patients living with HIV. Therefore, we sought to examine the effect of HIV-1 viral protein R (Vpr) on mitochondria axonal transport. Using mice primary neuronal cultures, we demonstrated that 4-day Vpr treatment reduced the ratio of moving mitochondria associated with (i) less energy (ATP) supply, (ii) reduction in Miro-1 and (iii) increase of α-synuclein which led to loss of microtubule stability as demonstrated by inconsecutive distribution of acetylated α-tubulin along the axons...
February 14, 2017: Neuropharmacology
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