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https://www.readbyqxmd.com/read/28721394/interhemispheric-disconnectivity-in-the-sensorimotor-network-in-bipolar-disorder-revealed-by-functional-connectivity-and-diffusion-tensor-imaging-analysis
#1
Takuya Ishida, Tomohiro Donishi, Jun Iwatani, Shinichi Yamada, Shun Takahashi, Satoshi Ukai, Kazuhiro Shinosaki, Masaki Terada, Yoshiki Kaneoke
BACKGROUND: Little is known regarding interhemispheric functional connectivity (FC) abnormalities via the corpus callosum in subjects with bipolar disorder (BD), which might be a key pathophysiological basis of emotional processing alterations in BD. METHODS: We performed tract-based spatial statistics (TBSS) using diffusion tensor imaging (DTI) in 24 healthy control (HC) and 22 BD subjects. Next, we analyzed the neural networks with independent component analysis (ICA) in 32HC and 25 BD subjects using resting-state functional magnetic resonance imaging...
June 2017: Heliyon
https://www.readbyqxmd.com/read/28721332/to-stent-or-not-to-stent-a-tale-of-two-occlusions
#2
Ali S Haider, Lyndon K Lee, Tijani Osumah, Saira Alli, Umair Khan, Steven Vayalumkal, Aida Kafai Golahmadi, Richa Thakur, Phu Nguyen, Kennith F Layton
Stenting and balloon angioplasty, along with mechanical thrombectomy, have gained notability as adjunctive treatment options to intravenous tissue plasminogen activator (IV-tPA) for tandem internal carotid artery (ICA) and middle cerebral artery (MCA) occlusions (TIM occlusions). Acute ischemic strokes (AISs) secondary to TIM occlusions are associated with poor patient outcomes primarily due to low recanalization rates following intravenous thrombolysis, consequently prompting the need for more invasive recanalization efforts...
June 17, 2017: Curēus
https://www.readbyqxmd.com/read/28720526/effects-of-musical-expertise-on-oscillatory-brain-activity-in-response-to-emotional-sounds
#3
Sophie Nolden, Simon Rigoulot, Pierre Jolicoeur, Jorge L Armony
Emotions can be conveyed through a variety of channels in the auditory domain, be it via music, non-linguistic vocalizations, or speech prosody. Moreover, recent studies suggest that expertise in one sound category can impact the processing of emotional sounds as they found that musicians process more efficiently emotional musical and vocal sounds than non-musicians. However, the neural correlates of these modulations, especially their time course, are not very well understood. Consequently, we focused here on how the neural processing of emotional information varies as a function of sound category and expertise of participants...
July 15, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28720076/prevalence-and-risk-factors-of-intracranial-and-extracranial-artery-stenosis-in-asymptomatic-rural-residents-of-13-villages-in-china
#4
Haiqiang Jin, Qing Peng, Ding Nan, Pu Lv, Ran Liu, Wei Sun, Yuming Teng, Yuanyuan Liu, Chenghe Fan, Haiying Xing, Ke Xu, Yining Huang
BACKGROUND: The present study aimed to investigate the prevalence and risk factors for extracranial carotid artery stenosis (ECAS) and intracranial carotid artery stenosis (ICAS) simultaneously in asymptomatic Chinese pure rural population. METHODS: We analyzed 2589 asymptomatic subjects aged over 30 yr. by ultrasonography and transcranial Doppler simultaneously in 13 isolated villages by door-to-door investigation. Both ECAS and ICAS were defined as more than 50% stenosis...
July 18, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28715507/independent-component-analysis-ica-based-clustering-of-temporal-rna-seq-data
#5
Moysés Nascimento, Fabyano Fonseca E Silva, Thelma Sáfadi, Ana Carolina Campana Nascimento, Talles Eduardo Maciel Ferreira, Laís Mayara Azevedo Barroso, Camila Ferreira Azevedo, Simone Eliza Faccione Guimarães, Nick Vergara Lopes Serão
Gene expression time series (GETS) analysis aims to characterize sets of genes according to their longitudinal patterns of expression. Due to the large number of genes evaluated in GETS analysis, an useful strategy to summarize biological functional processes and regulatory mechanisms is through clustering of genes that present similar expression pattern over time. Traditional cluster methods usually ignore the challenges in GETS, such as the lack of data normality and small number of temporal observations...
2017: PloS One
https://www.readbyqxmd.com/read/28714272/fluorescence-spectroscopy-coupled-with-independent-components-analysis-to-monitor-molecular-changes-during-heating-and-cooling-of-cantal-type-cheeses-with-different-nacl-and-kcl-contents
#6
Mohammed Loudiyi, Romdhane Karoui, Douglas N Rutledge, Marie-Christine Montel, Etienne Rifa, Abderrahmane Aït-Kaddour
BACKGROUND: Reduction of NaCl content of cheeses has received considerable attention by researches during the past decades due to its health effects. Nonetheless, NaCl reduction is a challenge since it plays an important role in cheese quality, such as structure, texture and functional properties. Serval methods were used to evaluate the effect of NaCl on these attributes. In this study, Cantal-type cheeses with different salts (NaCl and KCl) were analyzed for their structure at a molecular level and rheological properties during heating (20 to 60 °C) and cooling (60 to 20 °C)...
July 17, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28713232/detection-of-movement-related-cortical-potentials-from-eeg-using-constrained-ica-for-brain-computer-interface-applications
#7
Fatemeh Karimi, Jonathan Kofman, Natalie Mrachacz-Kersting, Dario Farina, Ning Jiang
The movement related cortical potential (MRCP), a slow cortical potential from the scalp electroencephalogram (EEG), has been used in real-time brain-computer-interface (BCI) systems designed for neurorehabilitation. Detecting MPCPs in real time with high accuracy and low latency is essential in these applications. In this study, we propose a new MRCP detection method based on constrained independent component analysis (cICA). The method was tested for MRCP detection during executed and imagined ankle dorsiflexion of 24 healthy participants, and compared with four commonly used spatial filters for MRCP detection in an offline experiment...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28712899/iatrogenic-ascending-pharyngeal-artery-injury-by-pre-dilation-balloon-inflation-during-carotid-artery-stenting-with-flow-reversal
#8
Junpei Koge, Tomonori Iwata, Shigehisa Mizuta, Yukihiko Nakamura, Shun-Ichi Matsumoto, Takeshi Yamada
BACKGROUND: The ascending pharyngeal artery (APA) may rarely arise from the common carotid artery bifurcation. We herein report an injury to the APA as an unusual complication of pre-dilation balloon inflation during carotid artery stenting (CAS) with flow reversal. CASE DESCRIPTION: A 73-year-old man presented with symptomatic severe left cervical internal carotid artery (ICA) stenosis. The left APA arose from the common carotid artery bifurcation. We performed CAS with flow reversal to decrease the risk of distal embolization...
July 13, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28712734/combined-direct-and-indirect-traumatic-carotid-cavernous-fistula-ccf-case-report-and-review-of-the-literature
#9
Isaac Josh Abecassis, Ryan P Morton, Louis J Kim, Basavaraj V Ghodke, Michael R Levitt
BACKGROUND: Within the current Barrow classification system, there are no categorical descriptions or reports in the literature of cavernous carotid fistulas (CCFs) with both a direct component (type A) and separate indirect contribution (type B, C, or D). We report the first definitive case of a combined simultaneous traumatic direct and indirect CCF, and review the literature on the similar existing entity of traumatic indirect CCFs presenting delayed and subsequent to the treatment of traumatic, direct CCFs...
July 13, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28710081/use-of-a-next-generation-multi-durometer-long-guide-sheath-for-triaxial-access-in-flow-diversion-experience-in-95-consecutive-cases
#10
Li-Mei Lin, Matthew T Bender, Geoffrey P Colby, Narlin B Beaty, Bowen Jiang, Jessica K Campos, Judy Huang, Rafael J Tamargo, Alexander L Coon
BACKGROUND: Intracranial access techniques in modern neurointerventions have shifted towards more robust access platforms. The long guide sheath is one of the building blocks of triaxial systems used in intracranial embolizations. Here we present our experience with the AXS Infinity LS long sheath in the triaxial platform for the implantation of the Pipeline embolization device (PED). METHODS: We retrospectively identified patients who underwent PED Flex treatment with the AXS Infinity LS at a single institution...
July 14, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28709122/tms-evoked-long-lasting-artefacts-a-new-adaptive-algorithm-for-eeg-signal-correction
#11
Elias P Casula, Alessandra Bertoldo, Vincenza Tarantino, Michele Maiella, Giacomo Koch, John C Rothwell, Gianna M Toffolo, Patrizia S Bisiacchi
OBJECTIVE: During EEG the discharge of TMS generates a long-lasting decay artefact (DA) that makes the analysis of TMS-evoked potentials (TEPs) difficult. Our aim was twofold: (1) to describe how the DA affects the recorded EEG and (2) to develop a new adaptive detrend algorithm (ADA) able to correct the DA. METHODS: We performed two experiments testing 50 healthy volunteers. In experiment 1, we tested the efficacy of ADA by comparing it with two commonly-used independent component analysis (ICA) algorithms...
June 17, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28708833/proliferating-effect-of-radiolytically-depolymerized-carrageenan-on-physiological-attributes-plant-water-relation-parameters-essential-oil-production-and-active-constituents-of-cymbopogon-flexuosus-steud-under-drought-stress
#12
Minu Singh, M Masroor A Khan, Moin Uddin, M Naeem, M Irfan Qureshi
Carrageenan has been proved as potent growth promoting substance in its depolymerized form. However, relatively little is known about its role in counteracting the adverse effects of drought stress on plants. In a pot experiment, lemongrass (Cymbopogon flexuosus Steud.), grown under different water stress regimes [(100% field capacity (FC), 80% FC and 60% FC)], was sprayed with 40, 80 and 120 mg L-1 of gamma irradiated carrageenan (ICA). Foliar application of ICA mitigated the harmful effects of drought stress to various extents and improved the biochemical characteristics, quality attributes and active constituents (citral and geraniol) of lemongrass significantly...
2017: PloS One
https://www.readbyqxmd.com/read/28702853/condomless-anal-sex-among-hiv-positive-men-who-have-sex-with-men-biomedical-context-matters
#13
Alison J Hughes, Yea-Hung Chen, Susan Scheer
Data from Medical Monitoring Project was used to determine if partner type is associated with condomless anal sex (CAS) and insertive condomless anal sex (ICAS) among HIV-positive men who have sex with men. Participants reported HIV status and PrEP use of up to five anal sex partners. Partner type was categorized as HIV-positive, HIV status unknown, HIV-negative on PrEP or HIV-negative not on PrEP. To account for correlation of multiple observations per participant, generalized estimating equations were used to calculate adjusted prevalence ratios and 95% confidence intervals of CAS and ICAS...
July 12, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/28700658/nanosecond-electric-pulses-differentially-affect-inward-and-outward-currents-in-patch-clamped-adrenal-chromaffin-cells
#14
Lisha Yang, Gale L Craviso, P Thomas Vernier, Indira Chatterjee, Normand Leblanc
This study examined the effect of 5 ns electric pulses on macroscopic ionic currents in whole-cell voltage-clamped adrenal chromaffin cells. Current-voltage (I-V) relationships first established that the early peak inward current was primarily composed of a fast voltage-dependent Na+ current (INa), whereas the late outward current was composed of at least three ionic currents: a voltage-gated Ca2+ current (ICa), a Ca2+-activated K+ current (IK(Ca)), and a sustained voltage-dependent delayed rectifier K+ current (IKV)...
2017: PloS One
https://www.readbyqxmd.com/read/28699679/one-session-of-remote-ischemic-preconditioning-does-not-improve-vascular-function-in-acute-normobaric-and-chronic-hypobaric-hypoxia
#15
Mathew G Rieger, Ryan L Hoiland, Joshua C Tremblay, Mike Stembridge, Anthony R Bain, Daniela Flück, Prajan Subedi, James D Anholm, Philip N Ainslie
Application of repeated short duration bouts of ischemia to the limbs, termed remote ischemic preconditioning (RIPC), is a novel technique that may have protective effects on vascular function during hypoxic exposures. In separate parallel-design studies, at sea-level (SL; n = 16), and after 8-12 days at high-altitude (HA; n = 12; White Mountain, 3800 m), participants underwent either a sham protocol or one session of 4 × 5 minutes of dual-thigh cuff occlusion with 5 minutes recovery. Brachial artery flow-mediated dilation (FMD; ultrasound), pulmonary artery systolic pressure (PASP; echocardiography), and internal carotid artery flow (ICA; ultrasound) were measured at SL in normoxia and isocapnic hypoxia [end-tidal PO₂ (PETO₂) maintained to 50 mmHg], and during normal breathing at HA...
July 12, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28697386/alterations-in-functional-brain-networks-associated-with-loss-chasing-in-gambling-disorder-and-cocaine-use-disorder
#16
Patrick D Worhunsky, Marc N Potenza, Robert D Rogers
BACKGROUND: Continued, persistent gambling to recover accumulating losses, or 'loss-chasing', is a behavioral pattern linked particularly closely to gambling disorder (GD) but may reflect impaired decision-making processes relevant to drug addictions like cocaine-use disorder (CUD). However, little is known regarding the neurocognitive mechanisms of this complex, maladaptive behavior, particularly in individuals with addictive disorders. METHODS: Seventy participants (25 GD, 18 CUD, and 27 healthy comparison (HC)) completed a loss-chase task during fMRI...
June 28, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28695827/experimental-toxoplasmosis-in-japanese-quails-coturnix-coturnix-japonica
#17
Ayhan Atasever, Cahit Babür, Abdullah İnci, Görkem Ekebaş, Anıl İça
OBJECTIVE: In this study, forming of experimental toxoplasmosis in quails; clinical, pathological, and serological determination of tissue lesions and bioassay techniques, which were aimed to compare them and determine pathogenesis. METHODS: A total of 120 one-year-old female quails (Coturnix coturnix japonica) were divided into oral infection, parenteral infection, and control groups. The oral group was infected with 0.5 ml inoculum suspension containing 106 tachyzoites of Toxoplasma gondii, whereas the control group was administered 0...
June 2017: Türkiye Parazitolojii Dergisi
https://www.readbyqxmd.com/read/28694608/surgically-relevant-bony-anatomical-variations-in-paraclinoid-aneurysms-three-dimensional-multi-detector-row-computed-tomography-based-study
#18
K Suprasanna, Ashvini Kumar
OBJECTIVE: To evaluate the proportion of surgically relevant anatomical variations such as caroticoclinoid foramen, interclinoid osseous bridge, and anterior clinoid pneumatization in patients with paraclinoid aneurysms based on computed tomography (CT) cerebral angiography studies. MATERIALS AND METHODS: Fifty-four CT cerebral angiography studies showing paraclinoid aneurysms involving the cavernous, clinoid, and supraclinoid internal carotid artery (ICA) were retrospectively evaluated...
July 2017: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28692997/automated-classification-and-removal-of-eeg-artifacts-with-svm-and-wavelet-ica
#19
Chong Yeh Sai, Norrima Mokhtar, Hamzah Arof, Paul Cumming, Masahiro Iwahashi
Brain electrical activity recordings by electroencephalography (EEG) are often contaminated with signal artifacts. Procedures for automated removal of EEG artifacts are frequently sought for clinical diagnostics and brain computer interface (BCI) applications. In recent years, a combination of independent component analysis (ICA) and discrete wavelet transform (DWT) has been introduced as standard technique for EEG artifact removal. However, in performing the wavelet-ICA procedure, visual inspection or arbitrary thresholding may be required for identifying artifactual components in the EEG signal...
July 4, 2017: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28692981/a-new-method-to-test-the-efficiency-of-cochlear-implant-artifacts-removal-from-auditory-evoked-potentials
#20
Virginie Attina, Faten Mina, Pierre Stahl, Yvan Duroc, Evelyne Veuillet, Eric Truy, Hung Thai-Van
Auditory Evoked Potentials (AEPs) are of great interest to objectively evaluate the audition in cochlear implant (CI) recipients. However, these measures are impeded by CI stimulation electrical artifacts present in the EEG. In a first part, this study investigates the use of a hybrid model approximating CI patient data. This model gives access to both uncontaminated and denoised data, thus allowing for the evaluation of CI artifact removal methods. Here the efficiency of Independent Component Analysis (ICA) is evaluated in the context of Auditory Steady State Responses (ASSRs)...
July 6, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
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