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https://www.readbyqxmd.com/read/29666633/the-eeg-activity-during-binocular-depth-perception-of-2d-images
#1
Marsel Fazlyyyakhmatov, Nataly Zwezdochkina, Vladimir Antipov
The central brain functions underlying a stereoscopic vision were a subject of numerous studies investigating the cortical activity during binocular perception of depth. However, the stereo vision is less explored as a function promoting the cognitive processes of the brain. In this work, we investigated a cortical activity during the cognitive task consisting of binocular viewing of a false image which is observed when the eyes are refocused out of the random-dot stereogram plane (3D phenomenon). The power of cortical activity before and after the onset of the false image perception was assessed using the scull EEG recording...
2018: Computational Intelligence and Neuroscience
https://www.readbyqxmd.com/read/29607540/melatonin-improves-insulin-resistance-and-hepatic-steatosis-through-attenuation-of-alpha-2-hs-glycoprotein
#2
Jee-In Heo, Dae Wui Yoon, Ji Hee Yu, Nam Hoon Kim, Hye Jin Yoo, Ji A Seo, Sin Gon Kim, Kyung Mook Choi, Sei Hyun Baik, Dong Seop Choi, Nan Hee Kim
Melatonin plays an important role in regulating circadian rhythms. It also acts as a potent anti-oxidant and regulates glucose and lipid metabolism, although the exact action mechanism is not clear. The α2-HS-glycoprotein gene (AHSG) and its protein, fetuin-A (FETUA) is one of the hepatokines and is known to be associated with insulin resistance and type 2 diabetes. The aim of this study was to determine whether melatonin improves hepatic insulin resistance and hepatic steatosis in a FETUA-dependent manner...
April 1, 2018: Journal of Pineal Research
https://www.readbyqxmd.com/read/29605758/electrophysiological-activity-is-associated-with-vulnerability-of-internet-addiction-in-non-clinical-population
#3
Grace Y Wang, Inga Griskova-Bulanova
This study investigated the electrophysiological activity associated with vulnerability of problematic Internet use in non-clinical population. The resting EEG spectrum of alpha (8-13 Hz) rhythm was measured in 22 healthy subjects who have used the Internet for recreational purpose. The vulnerability of Internet addiction was assessed using Young's Internet Addiction Test (IAT) and Assessment for Computer and Internet Addiction-Screener (AICA-S) respectively. Depression and impulsivity were also measured with Beck Depression Inventory (BDI) and Barratt Impulsiveness Scale 11(BIS-11) respectively...
March 27, 2018: Addictive Behaviors
https://www.readbyqxmd.com/read/29595637/high-mobility-group-box-1-was-associated-with-thrombosis-in-patients-with-atrial-fibrillation
#4
Qiwen Xu, Lin Bo, Jiaxin Hu, Jin Geng, Yuhan Chen, Xuelin Li, Fu Chen, Jie Song
INTRODUCTION: High mobility group box 1 (HMGB1) is a member of the HMGB family that is involved in inflammatory disease-related thrombosis. We hypothesize that HMGB1 and its downstream factors are associated with thrombosis in atrial fibrillation (AF). MATERIALS AND METHODS: Our experimental materials were the left atrial appendage (LAA) tissues from patients undergoing valve replacement. The samples were divided into 3 groups: a sinus rhythm group (n = 15), an AF(+)thrombus(-)group (n = 15), and an AF(+) thrombus (+)group (n = 15)...
March 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29593605/eeg-correlates-of-the-flow-state-a-combination-of-increased-frontal-theta-and-moderate-frontocentral-alpha-rhythm-in-the-mental-arithmetic-task
#5
Kenji Katahira, Yoichi Yamazaki, Chiaki Yamaoka, Hiroaki Ozaki, Sayaka Nakagawa, Noriko Nagata
Flow experience is a subjective state experienced during holistic involvement in a certain activity, which has been reported to function as a factor promoting motivation, skill development, and better performance in the activity. To verify the positive effects of flow and develop a method to utilize it, the establishment of a reliable measurement of the flow state is essential. The present study utilized an electroencephalogram (EEG) during an experimentally evoked flow state and examined the possibility of objective measurement of immediate flow...
2018: Frontiers in Psychology
https://www.readbyqxmd.com/read/29571717/simultaneous-scalp-recorded-eeg-and-local-field-potentials-from-monkey-ventral-premotor-cortex-during-action-observation-and-execution-reveals-the-contribution-of-mirror-and-motor-neurons-to-the-mu-rhythm
#6
Marco Bimbi, Fabrizia Festante, Gino Coudé, Ross E Vanderwert, Nathan A Fox, Pier Francesco Ferrari
The desynchronization of alpha and beta oscillations (mu rhythm) in the central scalp EEG during action observation and action execution is thought to reflect neural mirroring processes. However, the extent to which mirror neurons (MNs) or other populations of neurons contribute to such EEG desynchronization is still unknown. Here, we provide the first evidence that, in the monkey, the neuronal activity recorded from the ventral premotor cortex (PMv) strongly contributes to the EEG changes occurring in the beta band over central scalp electrodes, during executed and observed actions...
March 20, 2018: NeuroImage
https://www.readbyqxmd.com/read/29541184/a-role-for-the-clock-period-circadian-regulator-2-gene-in-regulating-the-clock-gene-network-in-human-oral-squamous-cell-carcinoma-cells
#7
Yiran Ao, Qin Zhao, Kai Yang, Gang Zheng, Xiaoqing Lv, Xiaoli Su
Clock genes are the core of the circadian rhythms in the human body and are important in regulating normal physiological functions. To date, research has indicated that the clock gene, period circadian clock 2 ( PER2 ), is downregulated in numerous types of cancer, and that it is associated with cancer occurrence and progression via the regulation of various downstream cell cycle genes. However, it remains unclear whether the decreased expression of PER2 influences the expression of other clock genes in cancer cells...
April 2018: Oncology Letters
https://www.readbyqxmd.com/read/29531009/-communication-melatonin-hyperhomocysteinemia-thioretinaco-ozonide-adenosylmethionine-and-mitochondrial-dysfunction-in-aging-and-dementia
#8
Kilmer S McCully
The indoleamine hormone melatonin is synthesized by the pineal gland, controls circadian rhythm, and is dependent upon adenosyl methionine for enzymatic synthesis of melatonin from N-acetyl serotonin. Pineal melatonin secretion declines dramatically with aging and dementia. Elevated plasma homocysteine is a risk factor for atherosclerosis and Alzheimer's disease, and the marked decline in adenosyl methionine with aging leads to dysregulation of methionine metabolism and hyperhomocysteinemia. Thioretinaco ozonide is a disulfonium complex formed from thioretinamide, cobalamin, and ozone, which binds the alpha and gamma-phosphate groups of adenosine triphosphate (ATP) and oxygen in the process of oxidative phosphorylation within mitochondria...
January 2018: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/29524845/eeg-beta-desynchronization-during-hand-goal-directed-action-observation-in-newborn-monkeys-and-its-relation-to-the-emergence-of-hand-motor-skills
#9
Fabrizia Festante, Ross E Vanderwert, Valentina Sclafani, Annika Paukner, Elizabeth A Simpson, Stephen J Suomi, Nathan A Fox, Pier Francesco Ferrari
Previous developmental research suggests that motor experience supports the development of action perception across the lifespan. However, it is still unknown when the neural mechanisms underlying action-perception coupling emerge in infancy. The goal of this study was to examine the neural correlates of action perception during the emergence of grasping abilities in newborn rhesus macaques. Neural activity, recorded via electroencephalogram (EEG), while monkeys observed grasping actions, mimed actions and means-end movements during the first (W1) and second week (W2) of life was measured...
March 1, 2018: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/29518565/distinct-phase-amplitude-couplings-distinguish-cognitive-processes-in-human-attention
#10
Ravi V Chacko, Byungchan Kim, Suh Woo Jung, Amy L Daitch, Jarod L Roland, Nicholas V Metcalf, Maurizio Corbetta, Gordon L Shulman, Eric C Leuthardt
Spatial attention is the cognitive function that coordinates the selection of visual stimuli with appropriate behavioral responses. Recent studies have reported that phase-amplitude coupling (PAC) of low and high frequencies covaries with spatial attention, but differ on the direction of covariation and the frequency ranges involved. We hypothesized that distinct phase-amplitude frequency pairs have differentiable contributions during tasks that manipulate spatial attention. We investigated this hypothesis with electrocorticography (ECoG) recordings from participants who engaged in a cued spatial attention task...
March 5, 2018: NeuroImage
https://www.readbyqxmd.com/read/29513682/single-session-tdcs-over-the-dominant-hemisphere-affects-contralateral-spectral-eeg-power-but-does-not-enhance-neurofeedback-guided-event-related-desynchronization-of-the-non-dominant-hemisphere-s-sensorimotor-rhythm
#11
Valeria Mondini, Anna Lisa Mangia, Angelo Cappello
BACKGROUND AND OBJECTIVE: Transcranial direct current stimulation (tDCS) and neurofeedback-guided motor imagery (MI) have attracted considerable interest in neurorehabilitation, given their ability to influence neuroplasticity. As tDCS has been shown to modulate event-related desynchronization (ERD), the neural signature of motor imagery detected for neurofeedback, a combination of the techniques was recently proposed. One limitation of this approach is that the area targeted for stimulation is the same from which the signal for neurofeedback is acquired...
2018: PloS One
https://www.readbyqxmd.com/read/29501948/salivary-cortisol-and-alpha-amylase-diurnal-profiles-and-stress-reactivity-in-children-with-attention-deficit-hyperactivity-disorder
#12
Eleni Angeli, Terpsichori Korpa, Elizabeth O Johnson, Filia Apostolakou, Ioannis Papassotiriou, George P Chrousos, Panagiota Pervanidou
There is growing evidence for dysregulation of the stress system in individuals with Attention Deficit Hyperactivity Disorder (ADHD). The stress system includes neuroanatomical and functional components that function in concert to maintain homeostasis and its main effectors are the hypothalamic-pituitary-adrenal (HPA) axis and the sympathetic/adrenomedullary nervous system (SNS). As stress system activity demonstrates a distinct circadian variation, we aimed to describe simultaneously, diurnal rhythms of both the HPA axis and the SNS in children with ADHD and a comparison group...
February 23, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29495415/embedding-dimension-selection-for-adaptive-singular-spectrum-analysis-of-eeg-signal
#13
Shanzhi Xu, Hai Hu, Linhong Ji, Peng Wang
The recorded electroencephalography (EEG) signal is often contaminated with different kinds of artifacts and noise. Singular spectrum analysis (SSA) is a powerful tool for extracting the brain rhythm from a noisy EEG signal. By analyzing the frequency characteristics of the reconstructed component (RC) and the change rate in the trace of the Toeplitz matrix, it is demonstrated that the embedding dimension is related to the frequency bandwidth of each reconstructed component, in consistence with the component mixing in the singular value decomposition step...
February 26, 2018: Sensors
https://www.readbyqxmd.com/read/29468778/behavioral-preference-in-sequential-decision-making-and-its-association-with-anxiety
#14
Dandan Zhang, Ruolei Gu
In daily life, people often make consecutive decisions before the ultimate goal is reached (i.e., sequential decision-making). However, this kind of decision-making has been largely overlooked in the literature. The current study investigated whether behavioral preference would change during sequential decisions, and the neural processes underlying the potential changes. For this purpose, we revised the classic balloon analogue risk task and recorded the electroencephalograph (EEG) signals associated with each step of decision-making...
February 21, 2018: Human Brain Mapping
https://www.readbyqxmd.com/read/29459372/detecting-unattended-stimuli-depends-on-the-phase-of-pre-stimulus-neural-oscillations
#15
Anthony M Harris, Paul E Dux, Jason B Mattingley
Neural oscillations appear important for perception and attention processes, as stimulus detection is dependent upon the phase of 7-11 Hz oscillations prior to stimulus onset. Previous work has examined stimulus detection at attended locations, but it is unknown whether unattended locations are also subject to phasic modulation by ongoing oscillatory activity, as would be predicted by theories proposing a role for neural oscillations in organizing general neural processing. Here we recorded brain activity with electroencephalography (EEG) while human participants of both sexes detected brief visual targets preceded by a spatial cue, and determined whether performance for cued (attended) and uncued (unattended) targets was influenced by oscillatory phase across a range of frequencies...
February 19, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29458742/preserved-sleep-microstructure-in-blind-individuals
#16
Sébrina Aubin, Julie A E Christensen, Poul Jennum, Tore Nielsen, Ron Kupers, Maurice Ptito
The loss of vision, particularly when it occurs early in life, is associated with compensatory cortical plasticity not only in the visual cortical areas, but throughout the entire brain. The absence of visual input to the retina can also induce changes in entrainment of the circadian rhythm, as light is the primary zeitgeber of the master biological clock found in the suprachiasmatic nucleus of the hypothalamus. In addition, a greater number of sleep disturbances is often reported in blind individuals. Here, we examined various electroencephalographic microstructural components of sleep, both during rapid-eye-movement (REM) sleep and non-REM (NREM) sleep, between blind individuals, including both of early and late onset, and normal-sighted controls...
February 2018: Sleep Medicine
https://www.readbyqxmd.com/read/29448151/functional-cortical-source-connectivity-of-resting-state-electroencephalographic-alpha-rhythms-shows-similar-abnormalities-in-patients-with-mild-cognitive-impairment-due-to-alzheimer-s-and-parkinson-s-diseases
#17
Claudio Babiloni, Claudio Del Percio, Roberta Lizio, Giuseppe Noce, Susanna Lopez, Andrea Soricelli, Raffaele Ferri, Maria Teresa Pascarelli, Valentina Catania, Flavio Nobili, Dario Arnaldi, Francesco Famà, Francesco Orzi, Carla Buttinelli, Franco Giubilei, Laura Bonanni, Raffaella Franciotti, Marco Onofrj, Paola Stirpe, Peter Fuhr, Ute Gschwandtner, Gerhard Ransmayr, Heinrich Garn, Lucia Fraioli, Michela Pievani, Fabrizia D'Antonio, Carlo De Lena, Bahar Güntekin, Lutfu Hanoğlu, Erol Başar, Görsev Yener, Derya Durusu Emek-Savaş, Antonio Ivano Triggiani, John Paul Taylor, Maria Francesca De Pandis, Laura Vacca, Giovanni B Frisoni, Fabrizio Stocchi
OBJECTIVE: This study tested the hypothesis that markers of functional cortical source connectivity of resting state eyes-closed electroencephalographic (rsEEG) rhythms may be abnormal in subjects with mild cognitive impairment due to Alzheimer's (ADMCI) and Parkinson's (PDMCI) diseases compared to healthy elderly subjects (Nold). METHODS: rsEEG data had been collected in ADMCI, PDMCI, and Nold subjects (N = 75 for any group). eLORETA freeware estimated functional lagged linear connectivity (LLC) from rsEEG cortical sources...
January 31, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29439335/abnormalities-of-resting-state-cortical-eeg-rhythms-in-subjects-with-mild-cognitive-impairment-due-to-alzheimer-s-and-lewy-body-diseases
#18
Claudio Babiloni, Claudio Del Percio, Roberta Lizio, Giuseppe Noce, Susanna Lopez, Andrea Soricelli, Raffaele Ferri, Maria Teresa Pascarelli, Valentina Catania, Flavio Nobili, Dario Arnaldi, Francesco Famà, Dag Aarsland, Francesco Orzi, Carla Buttinelli, Franco Giubilei, Marco Onofrj, Fabrizio Stocchi, Laura Vacca, Paola Stirpe, Peter Fuhr, Ute Gschwandtner, Gerhard Ransmayr, Heinrich Garn, Lucia Fraioli, Michela Pievani, Giovanni B Frisoni, Fabrizia D'Antonio, Carlo De Lena, Bahar Güntekin, Lutfu Hanoğlu, Erol Başar, Görsev Yener, Derya Durusu Emek-Savaş, Antonio Ivano Triggiani, Raffaella Franciotti, John Paul Taylor, Maria Francesca De Pandis, Laura Bonanni
The present study tested the hypothesis that cortical sources of resting state eyes-closed electroencephalographic (rsEEG) rhythms reveal different abnormalities in cortical neural synchronization in groups of patients with mild cognitive impairment due to Alzheimer's disease (ADMCI) and dementia with Lewy bodies (DLBMCI) as compared to cognitively normal elderly (Nold) subjects. Clinical and rsEEG data in 30 ADMCI, 23 DLBMCI, and 30 Nold subjects were available in an international archive. Age, gender, and education were carefully matched in the three groups...
2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29429257/-clinical-features-and-gene-analysis-of-tbc1d24-gene-mutation-related-early-onset-focal-myoclonic-epilepsy
#19
X R Leng, J Ye, Q L Zhou, X H Qi, Y H Dong, L P Zhang, Y F Zhang, Y P Wang, L P Li, Y C Lin
Objective: To investigate the clinical features and genetic characteristics of patients with TBC1D24 gene mutation related early-onset focal myoclonic epilepsy. Methods: Clinical data of 3 patients with TBC1D24 gene mutation related early-onset focal myoclonic epilepsy of Xuanwu Hospital from November 2016 to June 2017 was collected and analyzed.Candidate gene mutations were screened by second generation sequencing. Results: Among the 3 patients, 1 was male and 2 were females.Seizure onset age was 4 months, 3 years and 5 years after birth respectively...
February 6, 2018: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29423131/oscillatory-rhythm-of-reward-anticipation-and-processing-of-rewards-in-children-with-and-without-autism
#20
Katherine Kuhl-Meltzoff Stavropoulos, Leslie J Carver
Background: Autism spectrum disorder (ASD) is a complex neurodevelopmental condition, and multiple theories have emerged concerning core social deficits. While the social motivation hypothesis proposes that deficits in the social reward system cause individuals with ASD to engage less in social interaction, the overly intense world hypothesis (sensory over-responsivity) proposes that individuals with ASD find stimuli to be too intense and may have hypersensitivity to social interaction, leading them to avoid these interactions...
2018: Molecular Autism
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