keyword
MENU ▼
Read by QxMD icon Read
search

Supplementary motor area

keyword
https://www.readbyqxmd.com/read/28228422/elevated-reward-response-to-receipt-of-palatable-food-predicts-future-weight-variability-in-healthy-weight-adolescents
#1
Samantha R Winter, Sonja Yokum, Eric Stice, Karol Osipowicz, Michael R Lowe
Background: Both an elevated brain-reward-region response to palatable food and elevated weight variability have been shown to predict future weight gain.Objective: We examined whether the brain-reward response to food is related to future weight variability.Design: A total of 162 healthy-weight adolescents, who were aged 14-18 y at baseline, were enrolled in the study and were assessed annually over a 3-y follow-up period with 127 participants completing the final 3-y follow-up assessment. With the use of functional magnetic resonance imaging, we tested whether the neural responses to a cue that signaled an impending milkshake receipt and the receipt of the milkshake predicted weight variability over the follow-up period...
February 22, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28227763/network-effects-and-pathways-in-deep-brain-stimulation-in-parkinson-s-disease
#2
N Koirala, V Fleischer, O Granert, G Deuschl, M Muthuraman, S Groppa, N Koirala, V Fleischer, O Granert, G Deuschl, M Muthuraman, S Groppa
Deep brain stimulation of subthalamic nucleus (STN-DBS) became a standard therapeutic option in Parkinson's disease (PD), even though the underlying modulated network of STN-DBS is still poorly described. Probabilistic tractography and connectivity analysis as derived from diffusion tensor imaging (DTI) were performed together with modelling of implanted electrode positions and linked postoperative clinical outcome. Fifteen patients with idiopathic PD without dementia were selected for DBS treatment. After pre-processing, probabilistic tractography was run from cortical and subcortical seeds of the hypothesized network to targets represented by the positions of the active DBS contacts...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28222620/abnormality-of-spontaneous-brain-activities-in-patients-with-chronic-neck-and-shoulder-pain-a-resting-state-fmri-study
#3
Cheng-Xin Yu, Ting-Ting Ji, Hao Song, Bo Li, Qiang Han, Liang Li, Zhi-Zheng Zhuo
Objectives Chronic gneck and shoulder pain (CNSP) is a common clinical symptom of cervical spondylotic radiculopathy. Several studies using resting-state functional magnetic resonance imaging (rs-fMRI) have reported that most chronic pain diseases are accompanied by structural and functional changes in the brain. However, few rs-fMRI studies have examined CNSP. The current study investigated cerebral structural and functional changes in CNSP patients. Methods In total, 25 CNSP patients and 20 healthy volunteers participated in the study...
February 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28222547/brain-plasticity-after-implanted-peroneal-nerve-electrical-stimulation-to-improve-gait-in-chronic-stroke-patients-two-case-reports
#4
Aurore Thibaut, Florent Moissenet, Carol Di Perri, Céline Schreiber, Angélique Remacle, Elisabeth Kolanowski, Frédéric Chantraine, Claire Bernard, Roland Hustinx, Jean-Flory Tshibanda, Paul Filipetti, Steven Laureys, Olivia Gosseries
BACKGROUND: Recent studies have shown that stimulation of the peroneal nerve using an implantable 4-channel peroneal nerve stimulator could improve gait in stroke patients. OBJECTIVES: To assess structural cortical and regional cerebral metabolism changes associated with an implanted peroneal nerve electrical stimulator to correct foot drop related to a central nervous system lesion. METHODS: Two stroke patients presenting a foot drop related to a central nervous system lesion were implanted with an implanted peroneal nerve electrical stimulator...
February 6, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28220826/different-brain-structures-associated-with-artistic-and-scientific-creativity-a-voxel-based-morphometry-study
#5
Baoguo Shi, Xiaoqing Cao, Qunlin Chen, Kaixiang Zhuang, Jiang Qiu
Creativity is the ability to produce original and valuable ideas or behaviors. In real life, artistic and scientific creativity promoted the development of human civilization; however, to date, no studies have systematically investigated differences in the brain structures responsible for artistic and scientific creativity in a large sample. Using voxel-based morphometry (VBM), this study identified differences in regional gray matter volume (GMV) across the brain between artistic and scientific creativity (assessed by the Creative Achievement Questionnaire) in 356 young, healthy subjects...
February 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28214981/neural-mechanism-underling-comprehension-of-narrative-speech-and-its-heritability-study-in-a-large-population
#6
Abbas Babajani-Feremi
Comprehension of narratives constitutes a fundamental part of our everyday life experience. Although the neural mechanism of auditory narrative comprehension has been investigated in some studies, the neural correlates underlying this mechanism and its heritability remain poorly understood. We investigated comprehension of naturalistic speech in a large, healthy adult population (n = 429; 176/253 M/F; 22-36 years of age) consisting of 192 twin pairs (49 monozygotic and 47 dizygotic pairs) and 237 of their siblings...
February 18, 2017: Brain Topography
https://www.readbyqxmd.com/read/28213645/transcranial-direct-current-stimulation-modulates-neuronal-networks-in-attention-deficit-hyperactivity-disorder
#7
Anna Sotnikova, Cornelia Soff, Enzo Tagliazucchi, Katja Becker, Michael Siniatchkin
Anodal transcranial direct current stimulation (tDCS) of the prefrontal cortex has been repeatedly shown to improve working memory (WM). Since patients with attention deficit hyperactivity disorder (ADHD) are characterized by both underactivation of the prefrontal cortex and deficits in WM, the modulation of prefrontal activity with tDCS in ADHD patients may increase their WM performance as well as improve the activation and connectivity of the WM network. In the present study, this hypothesis was tested using a double-blind sham-controlled experimental design...
February 17, 2017: Brain Topography
https://www.readbyqxmd.com/read/28212570/altered-amygdala-and-hippocampus-effective-connectivity-in-mild-cognitive-impairment-patients-with-depression-a-resting-state-functional-mr-imaging-study-with-granger-causality-analysis
#8
Li Juan Zheng, Gui Fen Yang, Xin Yuan Zhang, Yun Fei Wang, Ya Liu, Gang Zheng, Guang Ming Lu, Long Jiang Zhang, Ying Han
Neuroimaging studies have demonstrated that the major depression disorder would increase the risk of dementia in the older with amnestic cognitive impairment. We used granger causality analysis algorithm to explore the amygdala- and hippocampus-based directional connectivity patterns in 12 patients with major depression disorder and amnestic cognitive impairment (mean age: 69.5 ± 10.3 years), 13 amnestic cognitive impairment patients (mean age: 72.7 ± 8.5 years) and 14 healthy controls (mean age: 64.7 ± 7...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28202336/functional-connectivity-in-resting-state-as-a-phonemic-fluency-ability-measure
#9
Anna Miró-Padilla, Elisenda Bueichekú, Noelia Ventura-Campos, María-Ángeles Palomar-García, César Ávila
There is some evidence that functional connectivity (FC) measures obtained at rest may reflect individual differences in cognitive capabilities. We tested this possibility by using the FAS test as a measure of phonemic fluency. Seed regions of the main brain areas involved in this task were extracted from meta-analysis results (Wagner et al., 2014) and used for pairwise resting-state FC analysis. Ninety-three undergraduates completed the FAS test outside the scanner. A correlation analysis was conducted between the F-A-S scores (behavioral testing) and the pairwise FC pattern of verbal fluency regions of interest...
February 12, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28188914/connectivity-based-parcellation-reveals-distinct-cortico-striatal-connectivity-fingerprints-in-autism-spectrum-disorder
#10
Joshua H Balsters, Dante Mantini, Nicole Wenderoth
Autism Spectrum Disorder (ASD) has been associated with abnormal synaptic development causing a breakdown in functional connectivity. However, when measured at the macro scale using resting state fMRI, these alterations are subtle and often difficult to detect due to the large heterogeneity of the pathology. Recently, we outlined a novel approach for generating robust biomarkers of resting state functional magnetic resonance imaging (RS-fMRI) using connectivity based parcellation of gross morphological structures to improve single-subject reproducibility and generate more robust connectivity fingerprints...
February 7, 2017: NeuroImage
https://www.readbyqxmd.com/read/28186656/phenotype-and-genotype-specific-structural-alterations-in-spasmodic-dysphonia
#11
Serena Bianchi, Giovanni Battistella, Hailey Huddleston, Rebecca Scharf, Lazar Fleysher, Anna F Rumbach, Steven J Frucht, Andrew Blitzer, Laurie J Ozelius, Kristina Simonyan
BACKGROUND: Spasmodic dysphonia is a focal dystonia characterized by involuntary spasms in the laryngeal muscles that occur selectively during speaking. Although hereditary trends have been reported in up to 16% of patients, the causative etiology of spasmodic dysphonia is unclear, and the influences of various phenotypes and genotypes on disorder pathophysiology are poorly understood. In this study, we examined structural alterations in cortical gray matter and white matter integrity in relationship to different phenotypes and putative genotypes of spasmodic dysphonia to elucidate the structural component of its complex pathophysiology...
February 10, 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/28180070/disrupted-functional-connectivity-of-striatal-sub-regions-in-bell-s-palsy-patients
#12
Wenwen Song, Zhijian Cao, Courtney Lang, Minhui Dai, Lihua Xuan, Kun Lv, Fangyuan Cui, Kristen Jorgenson, Maosheng Xu, Jian Kong
The striatum plays an important role in controlling motor function in humans, and its degeneration has the ability to cause severe motor disorders. More specifically, previous studies have demonstrated a disruption in the connectivity of the cortico-striatal loop in patients suffering from motor disorders caused by dopamine dysregulation, such as Parkinson's disease. However, little is known about striatal functional connectivity in patients with motor dysfunction not caused by dopamine dysregulation. In this study, we used early-state Bell's palsy (BP) patients (within 14 days of onset) to investigate how functional connectivity between the striatum and motor cortex is affected by peripheral nerve injury in which the dopamine system remains fully functional...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28175471/208%C3%A2-connectivity-based-functional-parcellation-and-localization-of-the-human-supplementary-motor-area-based-on-resting-state-functional-magnetic-resting-imaging-and-its-utility-in-brain-tumor-surgery
#13
Fengping Zhu, Dongxiao Zhuang, Qiang Luo, Tianming Qiu, Jinsong Wu, Jianfeng Feng, Ying Mao
No abstract text is available yet for this article.
August 1, 2016: Neurosurgery
https://www.readbyqxmd.com/read/28164375/pedunculopontine-network-dysfunction-in-parkinson-s-disease-with-postural-control-and-sleep-disorders
#14
Cecile Gallea, Claire Ewenczyk, Bertrand Degos, Marie-Laure Welter, David Grabli, Smaranda Leu-Semenescu, Romain Valabregue, Pierre Berroir, Lydia Yahia-Cherif, Eric Bertasi, Sara Fernandez-Vidal, Eric Bardinet, Emmanuel Roze, Habib Benali, Cyril Poupon, Chantal François, Isabelle Arnulf, Stéphane Lehéricy, Marie Vidailhet
BACKGROUND: The objective of this study was to investigate pedunculopontine nucleus network dysfunctions that mediate impaired postural control and sleep disorder in Parkinson's disease. METHODS: We examined (1) Parkinson's disease patients with impaired postural control and rapid eye movement sleep behavior disorder (further abbreviated as sleep disorder), (2) Parkinson's disease patients with sleep disorder only, (3) Parkinson's disease patients with neither impaired postural control nor sleep disorder, and (4) healthy volunteers...
February 6, 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/28161012/intraoperative-identification-of-the-negative-motor-network-during-awake-surgery-to-prevent-deficit-following-brain-resection-in-premotor-regions
#15
F Rech, H Duffau, C Pinelli, A Masson, P Roublot, A Billy-Jacques, H Brissart, T Civit
INTRODUCTION: Surgical resection in premotor areas can lead to supplementary motor area syndrome as well as a permanent deficit. However, recent findings suggest a putative role of the negative motor network in those dysfunctions. Our objective was to compare the functional results in two groups of adult patients who underwent the resection of a frontal glioma with and without resection of the negative motor networks. MATERIAL AND METHODS: Twelve patients (total of 13 surgeries) were selected for awake surgery for a frontal glioma...
February 1, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28160752/motor-preparation-rather-than-decision-making-differentiates-parkinson-s-disease-patients-with-and-without-freezing-of-gait
#16
John S Butler, Conor Fearon, Isabelle Killane, Saskia M Waechter, Richard B Reilly, Timothy Lynch
OBJECTIVE: Freezing of gait (FOG) is a brief, episodic phenomenon affecting over half of people with Parkinson's disease (PD) and leads to significant morbidity. The pathophysiology of FOG remains poorly understood but is associated with deficits in cognitive function and motor preparation. METHOD: We studied 20 people with PD (10 with FOG, 10 without FOG) and performed a timed response target detection task while electroencephalographic data were acquired. We analysed the data to detect and examine cortical markers of cognitive decision making (P3b or centroparietal positivity, CPP) and motor readiness potential...
December 28, 2016: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28156248/long-term-surgical-results-of-supplementary-motor-area-epilepsy-surgery
#17
Mario A Alonso-Vanegas, Daniel San-Juan, Ricardo M Buentello García, Carlos Castillo-Montoya, Horacio Sentíes-Madrid, Erika Brust Mascher, Paul Shkurovick Bialik, Carlos Trenado
OBJECTIVE Supplementary motor area (SMA) epilepsy is a well-known clinical condition; however, long-term surgical outcome reports are scarce and correspond to small series or isolated case reports. The aim of this study is to present the surgical results of SMA epilepsy patients treated at 2 reference centers in Mexico City. METHODS For this retrospective descriptive study (1999-2014), 52 patients underwent lesionectomy and/or corticectomy of the SMA that was guided by electrocorticography (ECoG). The clinical, neurophysiological, neuroimaging, and pathological findings are described...
February 3, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28154150/structural-and-functional-cortical-connectivity-mediating-cross-education-of-motor-function
#18
Kathy L Ruddy, Alexander Leemans, Daniel G Woolley, Nicole Wenderoth, Richard G Carson
: Cross Education is the process whereby training with one limb leads to subsequent improvement in performance by the opposite untrained limb. We used multimodal neuroimaging in humans to investigate the mediating neural mechanisms by relating quantitative estimates of functional and structural cortical connectivity to individual levels of interlimb transfer. Resting-state (rs)-fMRI and Diffusion Weighted Imaging (DWI) scans were undertaken prior to unilateral ballistic wrist flexion training...
February 2, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28144895/abnormal-regional-homogeneity-and-functional-connectivity-in-adjustment-disorder-of-new-recruits-a-resting-state-fmri-study
#19
Hui Li, Yuning Lin, Ji Chen, Xiaoyang Wang, Qingqing Wu, Qi Li, Ziqian Chen
PURPOSE: To explore the regional spontaneous neural activity and functional connectivity alterations of adjustment disorder (AD) in new recruits with in vivo resting-state functional MR (rs-fMRI). MATERIALS AND METHODS: Resting-state fMRI was performed in 31 recruits with AD and in 31 control recruits. Regional homogeneity (ReHo) was used to detect the regional synchronizing features of neuronal activations. Correlative analysis was performed to investigate the relationship between the Symptom Check List-90 (SCL-90) score and ReHo in regions with significant group differences...
January 31, 2017: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/28143464/brain-structural-and-functional-dissociated-patterns-in-schizophrenia
#20
Chuanjun Zhuo, Jiajia Zhu, Chunli Wang, Hongru Qu, Xiaolei Ma, Hongjun Tian, Mei Liu, Wen Qin
BACKGROUND: Although previous studies found that aberrations in gray matter volume (GMV) and global functional connectivity density (gFCD) are important characteristics of schizophrenia, to the best of our knowledge no study to date has investigated the associations between the spatial distribution patterns of GMV and gFCD alterations. We investigated pattern changes in gFCD and GMV among patients with schizophrenia and their associated spatial distributions. METHODS: Ninety-five patients with schizophrenia and 93 matched healthy controls underwent structural and resting-state functional MRI scanning to assess gFCD and GMV...
January 31, 2017: BMC Psychiatry
keyword
keyword
25260
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"