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https://www.readbyqxmd.com/read/28932894/additive-value-of-amyloid-pet-in-routine-cases-of-clinical-dementia-work-up-after-fdg-pet
#1
Matthias Brendel, Jonas Schnabel, Sonja Schönecker, Leonie Wagner, Eva Brendel, Johanna Meyer-Wilmes, Marcus Unterrainer, Andreas Schildan, Marianne Patt, Catharina Prix, Nibal Ackl, Cihan Catak, Oliver Pogarell, Johannes Levin, Adrian Danek, Katharina Buerger, Peter Bartenstein, Henryk Barthel, Osama Sabri, Axel Rominger
PURPOSE: In recent years, several [(18)F]-labeled amyloid-PET tracers have been developed and have obtained clinical approval. Despite their widespread scientific use, studies in routine clinical settings are limited. We therefore investigated the impact of [(18)F]-florbetaben (FBB)-PET on the diagnostic management of patients with suspected dementia that was still unclarified after [(18)F]-fluordeoxyglucose (FDG)-PET. METHODS: All subjects were referred in-house with a suspected dementia syndrome due to neurodegenerative disease...
September 20, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28931252/a-simplified-method-of-accurate-postprocessing-of-diffusion-tensor-imaging-for-use-in-brain-tumor-resection
#2
Phillip A Bonney, Andrew K Conner, Lillian B Boettcher, Ahmed A Cheema, Chad A Glenn, Adam D Smitherman, Nathan A Pittman, Michael E Sughrue
BACKGROUND: Use of diffusion tensor imaging (DTI) in brain tumor resection has been limited in part by a perceived difficulty in implementing the techniques into neurosurgical practice. OBJECTIVE: To demonstrate a simple DTI postprocessing method performed without a neuroscientist and to share results in preserving patient function while aggressively resecting tumors. METHODS: DTI data are obtained in all patients with tumors located within presumed eloquent cortices...
February 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28931250/minimally-invasive-transpalpebral-endoscopic-assisted-amygdalohippocampectomy
#3
Mauricio Mandel, Eberval Gadelha Figueiredo, Suzana Abramovicz Mandel, Rafael Tutihashi, Manoel Jacobsen Teixeira
BACKGROUND: Although anterior temporal lobectomy may be a definitive surgical treatment for epileptic patients with mesial temporal sclerosis, it often results in verbal, visual, and cognitive dysfunction. Studies have consistently reported the advantages of selective procedures compared with a standard anterior temporal lobectomy, mainly in terms of neuropsychological outcomes. OBJECTIVE: To describe a new technique to perform a selective amygdalohippocampectomy (SAH) through a transpalpebral approach with endoscopic assistance...
February 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28929564/prefronto-temporal-white-matter-microstructural-alterations-20%C3%A2-years-after-the-diagnosis-of-type-1-diabetes-mellitus
#4
Sujung Yoon, Jungyoon Kim, Gail Musen, Perry F Renshaw, Jaeuk Hwang, Nicolas R Bolo, Jieun E Kim, Donald C Simonson, Katie Weinger, Christopher M Ryan, In Kyoon Lyoo, Alan M Jacobson
OBJECTIVE: Microvascular pathophysiology that uniquely manifests as white matter (WM) abnormalities is often implicated in type 1 diabetes mellitus (T1DM)-related central nervous system (CNS) complications. This study sought to identify regional WM abnormalities in young adults diagnosed with T1DM and further examine their association with cognitive and emotional dysfunction. RESEARCH DESIGN AND METHODS: Diffusion tensor images (DTI) obtained from 34 young adults with T1DM for ≥15 years (mean duration, 20...
September 20, 2017: Pediatric Diabetes
https://www.readbyqxmd.com/read/28928646/cortical-activation-during-action-observation-action-execution-and-interpersonal-synchrony-in-adults-a-functional-near-infrared-spectroscopy-fnirs-study
#5
Anjana N Bhat, Michael D Hoffman, Susanna L Trost, McKenzie L Culotta, Jeffrey Eilbott, Daisuke Tsuzuki, Kevin A Pelphrey
Introduction: Humans engage in Interpersonal Synchrony (IPS) as they synchronize their own actions with that of a social partner over time. When humans engage in imitation/IPS behaviors, multiple regions in the frontal, temporal, and parietal cortices are activated including the putative Mirror Neuron Systems (Iacoboni, 2005; Buxbaum et al., 2014). In the present study, we compared fNIRS-based cortical activation patterns across three conditions of action observation ("Watch" partner), action execution ("Do" on your own), and IPS (move "Together")...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28927330/thalamocortical-neural-responses-during-hyperthermia-a-resting-state-functional-mri-study
#6
Jing Zhang, Shaowen Qian, Qingjun Jiang, Guanzhong Gong, Kai Liu, Bo Li, Yong Yin, Gang Sun
The neural responses during hyperthermia, once thought of as simple physiological processes (e.g. thermal sensation and regulation), have now been recognized involving more cognitive processes, which would be highly of importance to the management of those occupations during heavy heat exposure. Previous studies have demonstrated altered activity in localized subcortical clusters for thermal sensation and regulation, as well as cortical-cortical activity for behavioral tasks during hyperthermia. However, the involvement of cortical-subcortical activity during hyperthermia has not been investigated...
September 19, 2017: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/28924071/-a-case-of-a-solitary-plasmacytoma-extending-into-the-extradural-space
#7
Hiroshi Nakano, Koichi Kato, Shunsuke Nomura, Masanori Nakagawa, Takashi Higa, Shigeru Kadoyama, Takakazu Kawamata, Hiroshi Ujiie, Akira Teramoto
Plasmacytomas are characterized by a monoclonal proliferation of plasma cells, and constitute the bulk of multiple myeloma. A solitary plasmacytoma is a rare entity, and is even more unlikely to occur intracranially. Here we present a 62-year-old man with an intracranial tumor. Magnetic resonance imaging revealed a large mass on the surface of the right fronto-parieto-temporal region, with extradurally directed growth. The tumor was enhanced homogenously by gadolinium, with dural tail-like findings, which resembled a meningioma...
September 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/28905419/fast-3d-rosette-spectroscopic-imaging-of-neocortical-abnormalities-at-3-t-assessment-of-spectral-quality
#8
Claudiu V Schirda, Tiejun Zhao, Victor E Yushmanov, Yoojin Lee, Gena R Ghearing, Frank S Lieberman, Ashok Panigrahy, Hoby P Hetherington, Jullie W Pan
PURPOSE: To use a fast 3D rosette spectroscopic imaging acquisition to quantitatively evaluate how spectral quality influences detection of the endogenous variation of gray and white matter metabolite differences in controls, and demonstrate how rosette spectroscopic imaging can detect metabolic dysfunction in patients with neocortical abnormalities. METHODS: Data were acquired on a 3T MR scanner and 32-channel head coil, with rosette spectroscopic imaging covering a 4-cm slab of fronto-parietal-temporal lobes...
September 14, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28900210/alterations-of-brain-functional-architecture-associated-with-psychopathic-traits-in-male-adolescents-with-conduct-disorder
#9
Weidan Pu, Qiang Luo, Yali Jiang, Yidian Gao, Qingsen Ming, Shuqiao Yao
Psychopathic traits of conduct disorder (CD) have a core callous-unemotional (CU) component and an impulsive-antisocial component. Previous task-driven fMRI studies have suggested that psychopathic traits are associated with dysfunction of several brain areas involved in different cognitive functions (e.g., empathy, reward, and response inhibition etc.), but the relationship between psychopathic traits and intrinsic brain functional architecture has not yet been explored in CD. Using a holistic brain-wide functional connectivity analysis, this study delineated the alterations in brain functional networks in patients with conduct disorder...
September 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28889923/social-risky-decision-making-reveals-gender-differences-in-the-tpj-a-hyperscanning-study-using-functional-near-infrared-spectroscopy
#10
Mingming Zhang, Tao Liu, Matthew Pelowski, Huibin Jia, Dongchuan Yu
Previous neuroscience studies have investigated neural correlates of risky decision-making in a single-brain frame during pseudo social (predominantly non face-to-face) contexts. To fully understand the risky decision-making behavior in more natural social interactions, the present study employed a functional near-infrared spectroscopy (fNIRS) hyperscanning technique to simultaneously measure pairs of participants' fronto-temporal activations in a face-to-face gambling card-game. The intra-brain results revealed that both those who identified as males and as females showed higher activations in their mPFC and in the inferior parts of the frontopolar area, as well as in the tempo-parietal junction (TPJ) in cases involving higher versus lower risk...
September 7, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28883626/moral-judgment-modulation-by-disgust-priming-via-altered-fronto-temporal-functional-connectivity
#11
Julian Lim, Yoanna A Kurnianingsih, How Hwee Ong, O'Dhaniel A Mullette-Gillman
Moral judgments are not just the product of conscious reasoning, but also involve the integration of social and emotional information. Irrelevant disgust stimuli modulate moral judgments, with individual sensitivity determining the direction and size of effects across both hypothetical and incentive-compatible experimental designs. We investigated the neural circuitry underlying this modulation using fMRI in 19 individuals performing a moral judgment task with subliminal priming of disgust facial expressions...
September 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28882599/a-network-level-approach-of-cognitive-flexibility-impairment-after-surgery-of-a-right-temporo-parietal-glioma
#12
E Mandonnet, L Cerliani, K Siuda-Krzywicka, I Poisson, N Zhi, E Volle, M T de Schotten
OBJECTIVE: The right "non-dominant" temporo-parietal junction is usually not considered as a highly eloquent area. This contrasts with its mirrored left "dominant" counterpart, which is known as highly eloquent regarding language function. The question arises about which functions should be monitored when operating lesions of the right temporo-parietal junction under awake conditions. METHODS: We report the case of a patient who underwent a surgical resection of a glioma located in the right temporo-parietal junction...
September 4, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28879090/faciobrachial-dystonic-seizures-result-from-fronto-temporo-basalganglial-network-involvement
#13
Rajesh Shankar Iyer, T C R Ramakrishnan, Karunakaran, Ajit Shinto, Koramadai Karuppuswamy Kamaleshwaran
•Faciobrachial dystonic seizures (FBDS) are caused by autoantibodies to leucine-rich glioma-inactivated1 proteins, a component of the voltage-gated potassium channel complex (VGKC-complex) and precede the clinical presentation of limbic encephalitis.•The exact pathophysiology of FBDS is not known and whether they are seizures or movement disorder is still debated.•We suggest the fronto-temporo-basal ganglia network involving the medial frontal and temporal regions along with the corpus striatum and substantia nigra being responsible for the clinical phenomenon of FBDS...
2017: Epilepsy & Behavior Case Reports
https://www.readbyqxmd.com/read/28866447/efficacy-of-fronto-temporal-transcranial-direct-current-stimulation-for-refractory-auditory-verbal-hallucinations-in-schizophrenia-a-randomized-double-blind-sham-controlled-study
#14
Anushree Bose, Venkataram Shivakumar, Sri Mahavir Agarwal, Sunil V Kalmady, Sonia Shenoy, Vanteemar S Sreeraj, Janardhanan C Narayanaswamy, Ganesan Venkatasubramanian
Persistent auditory verbal hallucinations (AVH) that are refractory to antipsychotic medications are reported in about 20-30% of schizophrenia patients. Transcranial Direct Current Stimulation (tDCS), a non-invasive and safe neuromodulatory technique, has attracted significant interest as an add-on treatment for refractory AVH in schizophrenia. Studies examining the efficacy of tDCS for refractory AVH in schizophrenia have reported inconsistent findings. In this study, using a randomized, double-blind, sham-controlled design (RCT), we sought to examine the effect of add-on tDCS [anode corresponding to left dorsolateral prefrontal cortex and cathode to left temporo-parietal junction; 2-mA, twice-daily sessions for 5-days] to treat refractory AVH in schizophrenia patients (N=25); following this RCT phase, patients that had <30% reduction in AVH severity were offered an open-label extension (OLE) active stimulation to evaluate the effect of cross-over to verum tDCS...
August 30, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28863106/decompressive-craniectomy-with-bifrontal-coronal-incision-in-the-management-of-fronto-temporal-contusion-and-laceration-for-early-cranioplasty
#15
Zhong Wang, Ning Su, Ri-Le Wu, Yi-Song Zhang, Xiao-Jun Zhang, Jian-Jun Qi, Wei-Ping Zhao, Zhong Zhang, Jun-Qing Wang
The present study aims to explore the effectiveness of decompressive craniectomy with bifrontal coronal incision in the management of severe contusion and laceration of bilateral fronto-temporal lobes, as well as the outcomes of early cranioplasty. The authors performed the bifrontal decompressive craniectomy on 56 patients with contusion and laceration of bilateral frontal and temporal lobes, and their follow-up treatment outcomes were tracked within 6 months using Glasgow Outcome Scale. The results showed that 33 patients (out of 56, 58...
September 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28861339/spatio-temporal-source-cluster-analysis-reveals-fronto-temporal-auditory-change-processing-differences-within-a-shared-autistic-and-schizotypal-trait-phenotype
#16
Talitha C Ford, Will Woods, David P Crewther
Social Disorganisation (SD) is a shared autistic and schizotypal phenotype that is present in the subclinical population. Auditory processing deficits, particularly in mismatch negativity/field (MMN/F) have been reported across both spectrum disorders. This study investigates differences in MMN/F cortical spatio-temporal source activity between higher and lower quintiles of the SD spectrum. Sixteen low (9 female) and 19 high (9 female) SD subclinical adults (18-40years) underwent magnetoencephalography (MEG) during an MMF paradigm where standard tones (50ms) were interrupted by infrequent duration deviants (100ms)...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28860638/age-related-processing-delay-reveals-cause-of-apparent-sensory-excitability-following-auditory-stimulation
#17
Márta Volosin, Zsófia Anna Gaál, János Horváth
When background auditory events lead to enhanced auditory event-related potentials (ERPs) for closely following sounds, this is generally interpreted as a transient increase in the responsiveness of the auditory system. We measured ERPs elicited by irrelevant probes (gaps in a continuous tone) at several time-points following rare auditory events (pitch glides) in younger and older adults, who watched movies during stimulation. Fitting previous results, in younger adults, gaps elicited increasing N1 auditory ERPs with decreasing glide-gap separation...
August 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28860557/differential-cortical-gray-matter-deficits-in-adolescent-and-adult-onset-first-episode-treatment-na%C3%A3-ve-patients-with-schizophrenia
#18
Chengcheng Zhang, Qiang Wang, Peiyan Ni, Wei Deng, Yinfei Li, Liansheng Zhao, Xiaohong Ma, Yingcheng Wang, Hua Yu, Xiaojing Li, Pingping Zhang, Yajing Meng, Sugai Liang, Mingli Li, Tao Li
The current study aimed to explore age-variant trait differences of cortical gray matter volume (GMV) in a unique sample of first-episode and treatment-naïve patients with schizophrenia. A total of 158 subjects, including 26 adolescent-onset patients and 49 adult-onset patients as well as 83 age- and gender-matched controls were scanned using a 3T MRI scanner. Voxel-based morphometry (VBM) following Diffeomorphic Anatomical Registration Through Exponentiated Lie algebra (DARTEL) was used to explore group differences between patients and controls in regional GMV...
August 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28845834/clinical-stabilisation-with-lacosamide-of-mood-disorder-comorbid-with-ptsd-and-fronto-temporal-epilepsy
#19
Ilaria Cuomo, Georgios D Kotzalidis, Sergio De Filippis
BACKGROUND AND AIM OF THE WORK: Mood disorders are often complicated by comorbidity with epilepsy. Anxiety and personality disorders may worsen prognosis and treatment outcome. Lacosamide has been recently introduced as adjunctive treatment for partial epilepsy. Its mechanism consists of selective slow inactivation of voltage-gated sodium channels, thus promoting an extended stabilisation of cell membranes. Antiepileptic drugs have been largely used since the 1950s in psychiatry as mood stabilisers due to their membrane stabilising and anti-kindling effects...
August 23, 2017: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/28843886/childhood-maltreatment-is-associated-with-gray-matter-volume-abnormalities-in-patients-with-first-episode-depression
#20
Shuran Yang, Yuqi Cheng, Yin Mo, Yan Bai, Zonglin Shen, Fang Liu, Na Li, Linling Jiang, Wei Chen, Yi Lu, Xuejin Sun, Xiufeng Xu
Previous neuroimaging studies suggest that childhood maltreatment (CM) can affect brain function and structure and constitutes a potent risk of developing depression. The present study attempts to differentiate the effect of CM from the impact of depression diagnosis on brain structure. Eighty-four patients with first-episode depression and 84 controls participated in this study. All subjects underwent a structural magnetic resonance imaging (MRI) scan. Voxel-based morphometric analysis of variance (ANOVA), between-group comparison, and regression analyses were performed on a whole-brain level to identify the unbiased effects of CM and depression on brain structure...
July 26, 2017: Psychiatry Research
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