keyword
MENU ▼
Read by QxMD icon Read
search

"Brain plasticity"

keyword
https://www.readbyqxmd.com/read/27908981/neurotrophin-signalling-novel-insights-into-mechanisms-and-pathophysiology
#1
REVIEW
Mariela Mitre, Abigail Mariga, Moses V Chao
Neurotrophins, such as brain-derived neurotrophic factor (BDNF), are prominent regulators of neuronal survival, growth and differentiation during development. While trophic factors are viewed as well-understood but not innovative molecules, there are many lines of evidence indicating that BDNF plays an important role in the pathophysiology of many neurodegenerative disorders, depression, anxiety and other psychiatric disorders. In particular, lower levels of BDNF are associated with the aetiology of Alzheimer's and Huntington's diseases...
January 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/27877116/are-supramodality-and-cross-modal-plasticity-the-yin-and-yang-of-brain-development-from-blindness-to-rehabilitation
#2
Luca Cecchetti, Ron Kupers, Maurice Ptito, Pietro Pietrini, Emiliano Ricciardi
Research in blind individuals has primarily focused for a long time on the brain plastic reorganization that occurs in early visual areas. Only more recently, scientists have developed innovative strategies to understand to what extent vision is truly a mandatory prerequisite for the brain's fine morphological architecture to develop and function. As a whole, the studies conducted to date in sighted and congenitally blind individuals have provided ample evidence that several "visual" cortical areas develop independently from visual experience and do process information content regardless of the sensory modality through which a particular stimulus is conveyed: a property named supramodality...
2016: Frontiers in Systems Neuroscience
https://www.readbyqxmd.com/read/27870443/sex-differences-in-depression-during-pregnancy-and-the-postpartum-period
#3
REVIEW
Inger Sundström Poromaa, Erika Comasco, Marios K Georgakis, Alkistis Skalkidou
Women have a lifetime risk of major depression double that of men but only during their reproductive years. This sex difference has been attributed partially to activational effects of female sex steroids and also to the burdens of pregnancy, childbirth, and parenting. Men, in contrast, have a reproductive period difficult to delineate, and research on the mental health of men has rarely considered the effects of fatherhood. However, the couple goes through a number of potentially stressing events during the reproductive period, and both mothers and fathers are at risk of developing peripartum depression...
January 2, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/27865786/human-connectomics-across-the-life-span
#4
REVIEW
Xi-Nian Zuo, Ye He, Richard F Betzel, Stan Colcombe, Olaf Sporns, Michael P Milham
Connectomics has enhanced our understanding of neurocognitive development and decline by the integration of network sciences into studies across different stages of the human life span. However, these studies commonly occurred independently, missing the opportunity to test integrated models of the dynamical brain organization across the entire life span. In this review article, we survey empirical findings in life-span connectomics and propose a generative framework for computationally modeling the connectome over the human life span...
November 16, 2016: Trends in Cognitive Sciences
https://www.readbyqxmd.com/read/27846290/altered-effective-connectivity-of-the-primary-motor-cortex-in-stroke-a-resting-state-fmri-study-with-granger-causality-analysis
#5
Zhiyong Zhao, Xiangmin Wang, Mingxia Fan, Dazhi Yin, Limin Sun, Jie Jia, Chaozheng Tang, Xiaohui Zheng, Yuwei Jiang, Jie Wu, Jiayu Gong
The primary motor cortex (M1) is often abnormally recruited in stroke patients with motor disabilities. However, little is known about the alterations in the causal connectivity of M1 following stroke. The purpose of the present study was to investigate whether the effective connectivity of the ipsilesional M1 is disturbed in stroke patients who show different outcomes in hand motor function. 23 patients with left-hemisphere subcortical stroke were selected and divided into two subgroups: partially paralyzed hands (PPH) and completely paralyzed hands (CPH)...
2016: PloS One
https://www.readbyqxmd.com/read/27809886/efficacy-of-the-small-step-program-in-a-randomised-controlled-trial-for-infants-below-age-12%C3%A2-months-with-clinical-signs-of-cp-a-study-protocol
#6
Ann-Christin Eliasson, Linda Holmström, Päivikki Aarne, Cecilia Nakeva von Mentzer, Ann-Louise Weiland, Lena Sjöstrand, Hans Forssberg, Kristina Tedroff, Kristina Löwing
BACKGROUND: Children with cerebral palsy (CP) have life-long motor disorders, and they are typically subjected to extensive treatment throughout their childhood. Despite this, there is a lack of evidence supporting the effectiveness of early interventions aiming at improving motor function, activity, and participation in daily life. The study will evaluate the effectiveness of the newly developed Small Step Program, which is introduced to children at risk of developing CP during their first year of life...
November 3, 2016: BMC Pediatrics
https://www.readbyqxmd.com/read/27807349/induced-sensorimotor-brain-plasticity-controls-pain-in-phantom-limb-patients
#7
Takufumi Yanagisawa, Ryohei Fukuma, Ben Seymour, Koichi Hosomi, Haruhiko Kishima, Takeshi Shimizu, Hiroshi Yokoi, Masayuki Hirata, Toshiki Yoshimine, Yukiyasu Kamitani, Youichi Saitoh
The cause of pain in a phantom limb after partial or complete deafferentation is an important problem. A popular but increasingly controversial theory is that it results from maladaptive reorganization of the sensorimotor cortex, suggesting that experimental induction of further reorganization should affect the pain, especially if it results in functional restoration. Here we use a brain-machine interface (BMI) based on real-time magnetoencephalography signals to reconstruct affected hand movements with a robotic hand...
October 27, 2016: Nature Communications
https://www.readbyqxmd.com/read/27806448/functional-magnetic-resonance-imaging-in-clinical-practice-state-of-the-art-and-science
#8
Christen D Barras, Hamed Asadi, Torsten Baldeweg, Laura Mancini, Tarek A Yousry, Sotirios Bisdas
BACKGROUND: Functional magnetic resonance imaging (fMRI) has become a mainstream neuroimaging modality in the assessment of patients being evaluated for brain tumour and epilepsy surgeries. Thus, it is important for doctors in primary care settings to be well acquainted with the present and potential future applications, as well as limitations, of this modality. OBJECTIVE: The objective of this article is to introduce the theoretical principles and state-of-the-art clinical applications of fMRI in brain tumour and epilepsy surgery, with a focus on the implications for clinical primary care...
November 2016: Australian Family Physician
https://www.readbyqxmd.com/read/27788679/visually-guided-gait-training-in-paretic-patients-during-the-first-rehabilitation-phase-study-protocol-for-a-randomized-controlled-trial
#9
Cathia Rossano, Philippe Terrier
BACKGROUND: After a lesion to the central nervous system, many patients suffer from reduced walking capability. In the first rehabilitation phase, repeated walking exercises facilitate muscular strength and stimulate brain plasticity and motor relearning. However, marked limping, an unsteady gait, and poor management of obstacle clearance may persist, which increases a patient's risk of falling. Gait training with augmented reality has been recommended to improve gait coordination. The objective of this study is to test whether a gait rehabilitation program using augmented reality is superior to a conventional treadmill training program of equivalent intensity...
October 27, 2016: Trials
https://www.readbyqxmd.com/read/27787229/imaging-of-striatal-injury-in-a-songbird-brain
#10
Kristina Lukacova, Ladislav Baciak, Eva Pavukova, Katarina Pichova, Svatava Kasparova, Lubica Kubikova
Neurological insults affect both, brain structure and behavior. The injury-induced brain plasticity and associated changes in behavior are difficult to study using classical histological methods. The magnetic resonance imaging (MRI), however, enables repeated inspection of the brain in the same individual. Here we took advantage of the songbird model with discrete brain circuitry controlling song learning and production and assessed if a conventional MRI is suitable to detect even relatively small brain changes...
October 27, 2016: General Physiology and Biophysics
https://www.readbyqxmd.com/read/27780991/neuromodulation-for-addiction-by-transcranial-direct-current-stimulation-opportunities-and-challenges
#11
REVIEW
Shahid Bashir, Woo-Kyoung Yoo
The field of neuromodulation encompasses a wide spectrum of interventional technologies that modify the pathological activity within the nervous system to achieve a therapeutic effect. Therapy, including transcranial direct current stimulation, has shown promising results across a range of neurological and neuropsychiatric disorders. This article reviews the state-of-the-art of neuromodulation for addiction and discusses the opportunities and challenges available for clinicians and researchers interested in advancing the neuromodulation therapy...
October 2016: Annals of Neurosciences
https://www.readbyqxmd.com/read/27778161/brain-plasticity-in-parkinson-s-disease-with-freezing-of-gait-induced-by-action-observation-training
#12
Federica Agosta, Roberto Gatti, Elisabetta Sarasso, Maria Antonietta Volonté, Elisa Canu, Alessandro Meani, Lidia Sarro, Massimiliano Copetti, Erik Cattrysse, Eric Kerckhofs, Giancarlo Comi, Andrea Falini, Massimo Filippi
Gait disorders represent a therapeutic challenge in Parkinson's disease (PD). This study investigated the efficacy of 4-week action observation training (AOT) on disease severity, freezing of gait and motor abilities in PD, and evaluated treatment-related brain functional changes. 25 PD patients with freezing of gait were randomized into two groups: AOT (action observation combined with practicing the observed actions) and "Landscape" (same physical training combined with landscape-videos observation). At baseline and 4-week, patients underwent clinical evaluation and fMRI...
October 24, 2016: Journal of Neurology
https://www.readbyqxmd.com/read/27730478/action-observation-training-modifies-brain-gray-matter-structure-in-healthy-adult-individuals
#13
Maria A Rocca, Silvia Fumagalli, Elisabetta Pagani, Roberto Gatti, Gianna C Riccitelli, Paolo Preziosa, Giancarlo Comi, Andrea Falini, Massimo Filippi
Action observation training (AOT) is thought to facilitate motor system function. We applied voxelwise methods to assess the regional modifications of brain gray matter (GM) volumes and white matter (WM) architecture in healthy subjects following AOT and their correlations with improvements at motor and cognitive functional scales. Forty-two righ-handed healthy subjects were randomized into an experimental (AOT-G, n = 20) and a control (C-G, n = 22) group. The training lasted 2 weeks and consisted of 10 sessions of 45 min each during which subjects watched videos of daily-life actions (AOT-G) or landscapes (C-G), alternated by the execution with the right hand of actions presented in the AOT-G videos...
October 11, 2016: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/27719970/-neurophysiology-and-ageing-definition-and-pathophysiological-foundations-of-cognitive-impairment
#14
Consuelo Borrás Blasco, José Viña Ribes
Brain ageing is produced by various morphological, biochemical, metabolic and circulatory changes, which are reflected in functional changes, whose impact depends on the presence or absence of cognitive impairment. Because of brain plasticity, together with redundancy of the distinct cerebral circuits, age- related deterioration of the brain at various levels does not always translate into loss of brain function. However, when the damage exceeds certain thresholds, there is age-related cognitive impairment, which increases the risk of developing various neurodegenerative diseases such as Alzheimer disease...
June 2016: Revista Española de Geriatría y Gerontología
https://www.readbyqxmd.com/read/27716670/bdnf-responses-in-healthy-older-persons%C3%A2-to-35-minutes-of-physical-exercise-%C3%A2-cognitive-training-and%C3%A2-mindfulness-associations-with%C3%A2-working-memory-function
#15
Krister Håkansson, Aurélie Ledreux, Kirk Daffner, Yvonne Terjestam, Patrick Bergman, Roger Carlsson, Miia Kivipelto, Bengt Winblad, Ann-Charlotte Granholm, Abdul Kadir H Mohammed
Brain-derived neurotrophic factor (BDNF) has a central role in brain plasticity by mediating changes in cortical thickness and synaptic density in response to physical activity and environmental enrichment. Previous studies suggest that physical exercise can augment BDNF levels, both in serum and the brain, but no other study has examined how different types of activities compare with physical exercise in their ability to affect BDNF levels. By using a balanced cross over experimental design, we exposed nineteen healthy older adults to 35-minute sessions of physical exercise, cognitive training, and mindfulness practice, and compared the resulting changes in mature BDNF levels between the three activities...
October 4, 2016: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27714683/ng2-glia-more-than-progenitor-cells
#16
Jaime Eugenín-von Bernhardi, Leda Dimou
NG2-glia are a mysterious and ubiquitous glial population with a highly branched morphology. Initial studies suggested that their unique function is the generation and maintenance of oligodendrocytes in the central nervous system (CNS), important for proper myelination and therefore for axonal support and fast conduction velocity. Over the last years this simplistic notion has been dramatically changed: the wide and homogeneous distribution of NG2-glia within all areas of the developing CNS that is maintained during the whole lifespan, their potential to also differentiate into other cell types in a spatiotemporal manner, their active capability of maintaining their population and their dynamic behavior in altered conditions have raised the question: are NG2-glia simple progenitor cells or do they play further major roles in the normal function of the CNS? In this chapter, we will discuss some important features of NG2-glia like their homeostatic distribution in the CNS and their potential to differentiate into diverse cell types...
2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27708575/physical-exercise-preserves-adult-visual-plasticity-in-mice-and-restores-it-after-a-stroke-in-the-somatosensory-cortex
#17
Evgenia Kalogeraki, Justyna Pielecka-Fortuna, Janika M Hüppe, Siegrid Löwel
The primary visual cortex (V1) is widely used to study brain plasticity, which is not only crucial for normal brain function, such as learning and memory, but also for recovery after brain injuries such as stroke. In standard cage (SC) raised mice, experience-dependent ocular dominance (OD) plasticity in V1 declines with age and is compromised by a lesion in adjacent and distant cortical regions. In contrast, mice raised in an enriched environment (EE), exhibit lifelong OD plasticity and are protected from losing OD plasticity after a stroke-lesion in the somatosensory cortex...
2016: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/27692342/per-and-polyfluoroalkyl-substances-pfass-new-endocrine-disruptors-in-polar-bears-ursus-maritimus
#18
Kathrine Eggers Pedersen, Robert J Letcher, Christian Sonne, Rune Dietz, Bjarne Styrishave
Per- and polyfluoroalkyl substances (PFASs) are emerging in the Arctic and accumulate in brain tissues of East Greenland (EG) polar bears. In vitro studies have shown that PFASs might possess endocrine disrupting abilities and therefore the present study was conducted to investigate potential PFAS induced alterations in brain steroid concentrations. The concentrations of eleven steroid hormones were determined in eight brain regions from ten EG polar bears. Pregnenolone (PRE), the dominant progestagen, was found in mean concentrations of 5-47ng/g (ww) depending on brain region...
September 27, 2016: Environment International
https://www.readbyqxmd.com/read/27677799/secondary-release-of-exosomes-from-astrocytes-contributes-to-the-increase-in-neural-plasticity-and-improvement-of-functional-recovery-after-stroke-in-rats-treated-with-exosomes-harvested-from-microrna-133b-overexpressed-multipotent-mesenchymal-stromal-cells
#19
Hongqi Xin, Fengjie Wang, Yanfeng Li, Qing-E Lu, Wing Lee Cheung, Yi Zhang, Zheng Gang Zhang, Michael Chopp
We previously demonstrated that multipotent mesenchymal stromal cells (MSCs) with overexpressed microRNA 133b (miR-133b) significantly improve functional recovery in rats subjected to middle cerebral artery occlusion (MCAO) compared with naive MSCs, and that exosomes generated from naive MSCs mediate the therapeutic benefits of MSC therapy for stroke. Here, we investigated whether exosomes isolated from miR-133b(-)overexpressed MSCs (Ex-miR-133b(+)) exert amplified therapeutic effects. Rats subjected to 2 hours (h) of MCAO were intra-arterially injected with Ex-miR-133b(+), exosomes from MSCs infected by blank vector (Ex-Con), or phosphate-buffered solution (PBS), and were sacrificed 28 days post MCAO...
September 26, 2016: Cell Transplantation
https://www.readbyqxmd.com/read/27676998/effect-of-visual-feedback-on-speech-recovery-and-language-plasticity-in-patients-with-post-stroke-non-fluent-aphasia-functional-mri-assessment
#20
Monica Baciu, Audrey Acher, Louise Kauffmann, Emilie Cousin, Claire Boilley, Thomas Hueber, Pierre Badin, Pascal Perrier, Diandra Fabre, Assia Jaillard, Olivier Detante, Dominique Perennou
OBJECTIVE: To assess the efficiency of Visual Feedback (VF) on language recovery and plasticity in three chronic non-fluent aphasic patients. VF is based on language-action interaction, thus, language skills are improved by rehabilitation strategies based on execution and observation of motor actions. VF is an ultrasound system coupled with video images, allowing patients to 'see their own lips and tongue at work' during speech and improve their awareness of their lingual and labial movements and their ability to coordinate and combine phonemes and syllables...
September 2016: Annals of Physical and Rehabilitation Medicine
keyword
keyword
56386
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"