Filtered By:
Specialty: Neuroscience
Education: Learning

This page shows you your search results in order of date. This is page number 12.

Order by Relevance | Date

Total 286 results found since Jan 2013.

Exploring Training Effect in 42 Human Subjects Using a Non-invasive Sensorimotor Rhythm Based Online BCI
Conclusion In this study, we analyzed a pooled dataset consisting of 42 subjects’ three BCI training sessions. The behavioral performance results showed that there was a significant increase of BCI PVC accuracy (p = 0.004) and a marginal significant improvement of ITR (p = 0.05) in the third training session compared to the first session. No other significant difference of behavioral measures such as group average abort rate or feedback duration was found across the training sessions. Further analysis on the group average R2 value indicated that there was a significant difference of the R2 value on the first traini...
Source: Frontiers in Human Neuroscience - April 16, 2019 Category: Neuroscience Source Type: research

Glutamate-Releasing SWELL1 Channel in Astrocytes Modulates Synaptic Transmission and Promotes Brain Damage in Stroke
Publication date: Available online 11 April 2019Source: NeuronAuthor(s): Junhua Yang, Maria del Carmen Vitery, Jianan Chen, James Osei-Owusu, Jiachen Chu, Zhaozhu QiuSummaryBy releasing glutamate, astrocytes actively regulate synaptic transmission and contribute to excitotoxicity in neurological diseases. However, the mechanisms of astrocytic glutamate release have been debated. Here, we report non-vesicular release of glutamate through the glutamate-permeable volume-regulated anion channel (VRAC). Both cell swelling and receptor stimulation activated astrocytic VRAC, which requires its only obligatory subunit, Swell1. Ast...
Source: Neuron - April 12, 2019 Category: Neuroscience Source Type: research

Dynamic Office Environments Improve Brain Activity and Attentional Performance Mediated by Increased Motor Activity
Conclusion The results of the present study reveal short- and mid-term effects on attentional and vigilance performance, and EEG brain activity when working in a dynamic versus a static environment. During working in a dynamic office, attentional and vigilance performance increased compared to working in a static office. Brain activities show increased alpha, beta and gamma power in the frontal and central areas in the attentional task with increased theta, alpha, and beta activity in the vigilance task. These findings suggest that working in a dynamic office environment stimulates the brain towards an optimum psychophysi...
Source: Frontiers in Human Neuroscience - April 11, 2019 Category: Neuroscience Source Type: research

Collectivism Is Associated With Greater Neurocognitive Fluency in Older Adults
This study aimed to evaluate the impact of self-construal on neurocognitive functions in older adults. A total of 86 community-dwelling older adults 60 years and older were assessed with three common self-report measures of self-construal along individualism and collectivism (IC). A cognitive battery was administered to assess verbal and non-verbal fluency abilities. Latent profile analysis (LPA) was used to categorize individuals according to IC, and one-way analyses of covariance (ANCOVA), including relevant covariates (e.g., ethnicity, gender, linguistic abilities), were used to compare neurocognitive functions between ...
Source: Frontiers in Human Neuroscience - April 10, 2019 Category: Neuroscience Source Type: research

Neural Network Based Modeling and Control of Elbow Joint Motion Under Functional Electrical Stimulation
Publication date: Available online 6 March 2019Source: NeurocomputingAuthor(s): Yurong Li, Wenxin Chen, Jun Chen, Xin Chen, Jie Liang, Min DuAbstractIn patients with stroke and spinal cord injury, motor function is reduced or even lost because motor nerve signals cannot be transmitted due to nerve injury. Functional electrical stimulation (FES) is one of the most important rehabilitation techniques for the treatment of motor impairment in patients with stroke and spinal cord injury, which has been widely used in the recovery and reconstruction of limb motor function. In this paper, we propose a neural network based modelin...
Source: Neurocomputing - March 6, 2019 Category: Neuroscience Source Type: research

Mining Within-Trial Oscillatory Brain Dynamics to Address the Variability of Optimized Spatial Filters
Data-driven spatial filtering algorithms optimize scores, such as the contrast between two conditions to extract oscillatory brain signal components. Most machine learning approaches for the filter estimation, however, disregard within-trial temporal dynamics and are extremely sensitive to changes in training data and involved hyperparameters. This leads to highly variable solutions and impedes the selection of a suitable candidate for, e.g., neurotechnological applications. Fostering component introspection, we propose to embrace this variability by condensing the functional signatures of a large set of oscillatory compon...
Source: IEE Transactions on Neural Systems and Rehabilitation Engineering - February 28, 2019 Category: Neuroscience Source Type: research

Automatic Segmentation of Left Ventricle from Cardiac MRI via Deep Learning and Region Constrained Dynamic Programming
Publication date: Available online 16 February 2019Source: NeurocomputingAuthor(s): Hu Huaifei, Ning Pan, Jiayu Wang, Tailang Yin, Renzhen YeAbstractSegmentation of the left ventricle from cardiac magnetic resonance images (MRI) is an essential step to quantitatively analyze global and regional cardiac function. The aim of this study is to develop a novel and robust algorithm which can improve the accuracy of automatic left ventricle segmentation on short-axis cardiac MRI. The database used in this study are 900 cardiac MRI cases from Hubei Cancer Hospital. Three key techniques are developed in this segmentation algorithm:...
Source: Neurocomputing - February 16, 2019 Category: Neuroscience Source Type: research

Dietary Energy Restriction Ameliorates Cognitive Impairment in a Mouse Model of Traumatic Brain Injury
AbstractTraumatic brain injury (TBI) is one of the most common causes of neurological damage in young people. It was previously reported that dietary restriction, by either intermittent fasting (IF) or daily caloric restriction (CR), could protect neurons against dysfunction and degeneration in animal models of stroke and Parkinson ’s disease. Recently, several studies have shown that the protein Sirtuin 1 (SIRT1) plays a significant role in the induced neuroprotection following dietary restriction. In the present study, we found a significant reduction of SIRT1 levels in the cortex and hippocampus in a mouse model of mi...
Source: Journal of Molecular Neuroscience - February 8, 2019 Category: Neuroscience Source Type: research

Effects of Treadmill Exercise on Motor and Cognitive Function Recovery of MCAO Mice Through the Caveolin-1/VEGF Signaling Pathway in Ischemic Penumbra.
In this study, we attempted to determine an additional mechanism of treadmill exercise-mediated motor and cognitive functional recovery through the caveolin-1/VEGF pathway associated with BDNF in the ischemic penumbra of MCAO mice. We found that mice exposed to treadmill exercise after the MCAO operation showed a significant up-regulation in expression of caveolin-1, VEGF, BDNF, synapsin I and CYFIP1 proteins, numbers of cells positive for BrdU/CD34, BDNF, BrdU/NeuN, BrdU/Synapsin I and CYFIP1 expression were increased, which support the reduction in neurological deficit and infarction volume, as well as improved synaptic ...
Source: Neurochemical Research - January 19, 2019 Category: Neuroscience Authors: Chen Z, Hu Q, Xie Q, Wu S, Pang Q, Liu M, Zhao Y, Tu F, Liu C, Chen X Tags: Neurochem Res Source Type: research

Inter- and Intra-Rater Reliability of Computer-Assisted Planimetry in Experimental Stroke Research
ConclusionComputer-assisted planimetry can be an appropriate method to determine hemispheric or ischemic lesion volume in rodents but requires a sufficiently long learning period of approximately two months. Even an experienced investigator can generate data with serious variation. Inter- and intra-rater-dependent bias should be considered during the design and performance of respective studies.
Source: Journal of Neuroscience Methods - November 19, 2018 Category: Neuroscience Source Type: research

Inhibition of protease-activated receptor 1 ameliorates behavioral deficits and restores hippocampal synaptic plasticity in a rat model of status epilepticus
Publication date: Available online 1 November 2018Source: Neuroscience LettersAuthor(s): Marharyta Semenikhina, Ruslan Bogovyk, Mykhailo Fedoriuk, Oksana Nikolaienko, Lina T. AlKury, Alina Savotchenko, Oleg Krishtal, Elena IsaevaAbstractThe blood-brain barrier (BBB) is a unique structure that controls substances exchange between the systemic circulation and the brain. Disruption of its integrity contributes to the development and progression of a variety of brain disorders including stroke, epilepsy and neurodegenerative diseases. It was shown that intracerebral thrombin level substantially increases following status epile...
Source: Neuroscience Letters - November 2, 2018 Category: Neuroscience Source Type: research

Functional Neurochemistry of the Ventral and Dorsal Hippocampus: Stress, Depression, Dementia and Remote Hippocampal Damage.
Abstract The hippocampus is not a homogeneous brain area, and the complex organization of this structure underlies its relevance and functional pleiotropism. The new data related to the involvement of the ventral hippocampus in the cognitive function, behavior, stress response and its association with brain pathology, in particular, depression, are analyzed with a focus on neuroplasticity, specializations of the intrinsic neuronal network, corticosteroid signaling through mineralocorticoid and glucocorticoid receptors and neuroinflammation in the hippocampus. The data on the septo-temporal hippicampal gradient are...
Source: Neurochemical Research - October 24, 2018 Category: Neuroscience Authors: Gulyaeva NV Tags: Neurochem Res Source Type: research

Co-Administration of Progesterone and Melatonin Attenuates Ischemia-Induced Hippocampal Damage in Rats
AbstractStroke is the second leading reason for death worldwide and is one of the fundamental causes of long-term disabilities. The aim of this investigation was to assess the impact of combined administration progesterone (PROG) and melatonin (MEL) on stroke complications. Male Wistar rats (9 –10 weeks) weighing 250–300 g were used as a part of this examination. They were randomly separated into eight groups (nine rats for every group). Common carotid arteries on the two sides clamped (BCCAO model) with non-traumatic clips for 20 min. At that point, the rats were treated with 8 m g/kg PROG, 10 mg/kg MEL, and vehi...
Source: Journal of Molecular Neuroscience - October 1, 2018 Category: Neuroscience Source Type: research

Statistical Learning Impairments as a Consequence of Stroke
Albulena Shaqiri, James Danckert, Lauren Burnett, Britt Anderson
Source: Frontiers in Human Neuroscience - August 28, 2018 Category: Neuroscience Source Type: research