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https://www.readbyqxmd.com/read/29343982/increased-theta-band-eeg-power-in-sickle-cell-disease-patients
#1
Michelle Case, Sina Shirinpour, Huishi Zhang, Yvonne H Datta, Stephen C Nelson, Karim T Sadak, Kalpna Gupta, Bin He
Objective: Pain is a major issue in the care of patients with sickle cell disease (SCD). The mechanisms behind pain and the best way to treat it are not well understood. We studied how electroencephalography (EEG) is altered in SCD patients. Methods: We recruited 20 SCD patients and compared their resting state EEG to that of 14 healthy controls. EEG power was found across frequency bands using Welch's method. Electrophysiological source imaging was assessed for each frequency band using the eLORETA algorithm...
2018: Journal of Pain Research
https://www.readbyqxmd.com/read/29343928/exploration-of-lower-frequency-eeg-dynamics-and-cortical-alpha-asymmetry-in-long-term-rajyoga-meditators
#2
Kanishka Sharma, Sushil Chandra, Ashok Kumar Dubey
Background: Rajyoga meditation is taught by Prajapita Brahmakumaris World Spiritual University (Brahmakumaris) and has been followed by more than one million followers across the globe. However, rare studies were conducted on physiological aspects of rajyoga meditation using electroencephalography (EEG). Band power and cortical asymmetry were not studied with Rajyoga meditators. Aims: This study aims to investigate the effect of regular meditation practice on EEG brain dynamics in low-frequency bands of long-term Rajyoga meditators...
January 2018: International Journal of Yoga
https://www.readbyqxmd.com/read/29343456/eeg-dynamics-and-neural-generators-in-implicit-navigational-image-processing-in-adults-with-adhd
#3
A Leroy, G Petit, D Zarka, A M Cebolla, E Palmero-Soler, J Strul, B Dan, P Verbanck, G Cheron
In contrast to childhood ADHD that is characterized by inattention, impulsivity and hyperactivity, most adults with ADHD predominantly exhibit inattention. We used a new oddball paradigm using implicit navigational images and analysed EEG dynamics with swLORETA inverse modelling of the evoked potential generators to study cortical processing in adults with ADHD and age-matched controls. In passive observation, we demonstrated that P350 amplitude, alpha-beta oscillation event-related synchronization (ERS) anticipation, and beta event-related desynchronization (ERD) were significantly smaller in ADHD...
January 14, 2018: Neuroscience
https://www.readbyqxmd.com/read/29341203/food-specific-inhibitory-control-under-negative-mood-in-binge-eating-disorder-evidence-from-a-multimethod-approach
#4
Elisabeth J Leehr, Kathrin Schag, Thomas Dresler, Moritz Grosse-Wentrup, Martin Hautzinger, Andreas J Fallgatter, Stephan Zipfel, Katrin E Giel, Ann-Christine Ehlis
OBJECTIVE: Inhibitory control has been discussed as a developmental and maintenance factor in binge-eating disorder (BED). The current study is the first aimed at investigating inhibitory control in a negative mood condition on a psychophysiological and behavioral level in BED with a combination of electroencephalography (EEG) and eye tracking (ET). METHOD: We conducted a combined EEG and ET study with overweight individuals with BED (BED+, n = 24, mean age = 31, mean BMI = 35 kg/m2 ) and without BED (BED-, n = 23, mean age = 28, mean BMI = 35 kg/m2 ) and a normal-weight (NWC, n = 26, mean age 28, mean BMI = 22 kg/m2 ) control group...
January 17, 2018: International Journal of Eating Disorders
https://www.readbyqxmd.com/read/29341120/trajectories-of-infants-biobehavioral-development-timing-and-rate-of-a-not-b-performance-gains-and-eeg-maturation
#5
Leigha A MacNeill, Nilam Ram, Martha Ann Bell, Nathan A Fox, Koraly Pérez-Edgar
This study examined how timing (i.e., relative maturity) and rate (i.e., how quickly infants attain proficiency) of A-not-B performance were related to changes in brain activity from age 6 to 12 months. A-not-B performance and resting EEG (electroencephalography) were measured monthly from age 6 to 12 months in 28 infants and were modeled using logistic and linear growth curve models. Infants with faster performance rates reached performance milestones earlier. Infants with faster rates of increase in A-not-B performance had lower occipital power at 6 months and greater linear increases in occipital power...
January 17, 2018: Child Development
https://www.readbyqxmd.com/read/29337234/electrophysiological-activity-prior-to-self-initiated-movements-is-related-to-impulsive-personality-traits
#6
A Rossi, F Giovannelli, G Gavazzi, S Righi, M Cincotta, M P Viggiano
Electrophysiological and neuroimaging studies suggest that our actions are initiated by unconscious mental processes long before awareness of intention to act. The time window between the awareness of the intention to move and the movement onset, which normally permits to exert a conscious "veto" on the impending action, is modulated by individual differences in trait impulsivity. In particular, trait impulsive people show a delayed awareness of the intention to act, probably exceeding the "point of no return", after which the action can no longer be inhibited...
January 11, 2018: Neuroscience
https://www.readbyqxmd.com/read/29334155/response-selection-codes-in-neurophysiological-data-predict-conjoint-effects-of-controlled-and-automatic-processes-during-response-inhibition
#7
Witold X Chmielewski, Moritz Mückschel, Christian Beste
The inhibition of prepotent responses is a requirement for goal-directed behavior and several factors determine corresponding successful response inhibition processes. One factor relates to the degree of automaticity of pre-potent response tendencies and another factor relates to the degree of cognitive control that is exerted during response inhibition. However, both factors can conjointly modulate inhibitory control. Cognitive theoretical concepts suggest that codings of stimulus-response translations may underlie such conjoint effects...
January 15, 2018: Human Brain Mapping
https://www.readbyqxmd.com/read/29331064/controlling-the-temporal-structure-of-brain-oscillations-by-focused-attention-meditation
#8
Mona Irrmischer, Simon J Houtman, Huibert D Mansvelder, Michael Tremmel, Ulrich Ott, Klaus Linkenkaer-Hansen
Our focus of attention naturally fluctuates between different sources of information even when we desire to focus on a single object. Focused attention (FA) meditation is associated with greater control over this process, yet the neuronal mechanisms underlying this ability are not entirely understood. Here, we hypothesize that the capacity of attention to transiently focus and swiftly change relates to the critical dynamics emerging when neuronal systems balance at a point of instability between order and disorder...
January 13, 2018: Human Brain Mapping
https://www.readbyqxmd.com/read/29331054/artist-a-fully-automated-artifact-rejection-algorithm-for-single-pulse-tms-eeg-data
#9
Wei Wu, Corey J Keller, Nigel C Rogasch, Parker Longwell, Emmanuel Shpigel, Camarin E Rolle, Amit Etkin
Concurrent single-pulse TMS-EEG (spTMS-EEG) is an emerging noninvasive tool for probing causal brain dynamics in humans. However, in addition to the common artifacts in standard EEG data, spTMS-EEG data suffer from enormous stimulation-induced artifacts, posing significant challenges to the extraction of neural information. Typically, neural signals are analyzed after a manual time-intensive and often subjective process of artifact rejection. Here we describe a fully automated algorithm for spTMS-EEG artifact rejection...
January 13, 2018: Human Brain Mapping
https://www.readbyqxmd.com/read/29329910/the-effects-of-exercise-intensity-and-post-exercise-recovery-time-on-cortical-activation-as-revealed-by-eeg-alpha-peak-frequency
#10
B Gutmann, P Zimmer, T Hülsdünker, J Lefebvre, S Binnebößel, M Oberste, W Bloch, H K Strüder, A Mierau
Acute physical exercise (APE) induces an increase in the individual alpha peak frequency (iAPF), a cortical parameter associated with neural information processing speed. The aim of this study was to further scrutinize the influence of different APE intensities on post-exercise iAPF as well as its time course after exercise cessation. 95 healthy young (18-35 years) subjects participated in two randomized controlled experiments (EX1 and EX2). In EX1, all participants completed a graded exercise test (GXT) until exhaustion and were randomly allocated into different delay groups (immediately 0, 30, 60 and 90 minutes after GXT)...
January 9, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29325493/simulation-based-evaluation-of-an-in-vehicle-smart-situation-awareness-enhancement-system
#11
Andreas Gregoriades, Alistair Sutcliffe
Situation awareness (SA) constitutes a critical factor in road safety, strongly related to accidents. This paper describes the evaluation of a proposed SA enhancement system (SAES) that exploits augmented reality through a head-up display. Two SAES designs were evaluation (information rich v. minimal information) using a custom-made simulator and the Situation Awareness Global Assessment Technique (SAGAT) with performance and EEG measures. The paper describes the process of assessing the SA of drivers using the SAES, through a series of experiments with participants in a Cave Automatic Virtual Environment (CAVE)...
January 11, 2018: Ergonomics
https://www.readbyqxmd.com/read/29324074/synchronization-of-electrophysiological-responses-with-speech-benefits-syntactic-information-processing
#12
Lars Meyer, Matthias Gumbert
In auditory neuroscience, electrophysiological synchronization to low-level acoustic and high-level linguistic features is well established-but its functional purpose for verbal information transmission is unclear. Based on prior evidence for a dependence of auditory task performance on delta-band oscillatory phase, we hypothesized that the synchronization of electrophysiological responses at delta-band frequency to the speech stimulus serves to implicitly align neural excitability with syntactic information...
January 11, 2018: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/29324072/alpha-oscillations-during-incidental-encoding-predict-subsequent-memory-for-new-foil-information
#13
David A Vogelsang, Matthias Gruber, Zara M Bergström, Charan Ranganath, Jon S Simons
People can employ adaptive strategies to increase the likelihood that previously encoded information will be successfully retrieved. One such strategy is to constrain retrieval toward relevant information by reimplementing the neurocognitive processes that were engaged during encoding. Using EEG, we examined the temporal dynamics with which constraining retrieval toward semantic versus nonsemantic information affects the processing of new "foil" information encountered during a memory test. Time-frequency analysis of EEG data acquired during an initial study phase revealed that semantic compared with nonsemantic processing was associated with alpha decreases in a left frontal electrode cluster from around 600 msec after stimulus onset...
January 11, 2018: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/29317185/cortical-inhibition-assessed-using-paired-pulse-tms-eeg-is-increased-in-older-adults
#14
George M Opie, Simranjit K Sidhu, Nigel C Rogasch, Michael C Ridding, John G Semmler
BACKGROUND: Alterations in inhibitory processes mediated by gamma-aminobutyric acid type B (GABAB) receptors may contribute to age-related functional impairments. However, investigation of these circuits using conventional paired-pulse transcranial magnetic stimulation (TMS) at long interstimulus intervals (∼100-200ms) have produced conflicting results in older adults, possibly due to the indirect nature of the TMS motor evoked potential (MEP). OBJECTIVE: To utilise electroencephalography and TMS coregistration (TMS-EEG) to more directly assess age-related changes in GABAB-mediated long-interval intracortical inhibition (LICI)...
December 30, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/29310966/improving-the-anesthetic-process-by-a-fuzzy-rule-based-medical-decision-system
#15
Juan Albino Mendez, Ana Leon, Ayoze Marrero, Jose M Gonzalez-Cava, Jose Antonio Reboso, Jose Ignacio Estevez, José F Gomez-Gonzalez
OBJECTIVE: The main objective of this research is the design and implementation of a new fuzzy logic tool for automatic drug delivery in patients undergoing general anesthesia. The aim is to adjust the drug dose to the real patient needs using heuristic knowledge provided by clinicians. A two-level computer decision system is proposed. The idea is to release the clinician from routine tasks so that he can focus on other variables of the patient. METHODS: The controller uses the Bispectral Index (BIS) to assess the hypnotic state of the patient...
January 5, 2018: Artificial Intelligence in Medicine
https://www.readbyqxmd.com/read/29306774/the-cortisol-awakening-response-predicts-response-inhibition-in-the-afternoon-of-the-same-day
#16
Xia Shi, Xiaofang Sun, Zhuxi Yao, Yiran Yuan, Jianhui Wu, Angela Clow
The cortisol awakening response (CAR) is the rapid increase of cortisol levels 30-45 min after awakening in the morning. Numerous studies have indicated the relationship between the CAR and cognition. However, little is known about daily variation in the CAR and cognitive function in healthy adults. The aim of the present study was to investigate whether the CAR predicted the response inhibition function on the same day in both behaviour and the dynamic time course of brain processing. The saliva samples of 47 healthy men were collected at three time points: immediately on awakening, 30 min and 45 min post-awakening in the morning...
December 21, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29306356/the-usefulness-of-sloreta-in-evaluating-the-effect-of-high-dose-ara-c-on-brain-connectivity-in-patients-with-acute-myeloid-leukemia-an-exploratory-study
#17
A Zarabla, S Ungania, A Cacciatore, A Maialetti, G Petreri, A Mengarelli, A Spadea, F Marchesi, D Renzi, Svitlana Gumenyuk, L Strigari, Marta Maschio
Cytosine arabinoside (Ara-C) is one of the key drugs for treating acute myeloid leukemia (AML). High intravenous doses may produce a number of central nervous system (CNS) toxicities and contribute to modifications in brain functional connectivity. sLORETA is a software used for localizing brain electrical activity and functional connectivity. The aim of this study was to apply sLORETA in the evaluation of possible effects of Ara-C on brain connectivity in patients with AML without CNS involvement. We studied eight patients with AML; four were administered standard doses of Ara-C while the other four received high doses...
October 2017: Functional Neurology
https://www.readbyqxmd.com/read/29305533/perceptual-surprise-improves-action-stopping-by-non-selectively-suppressing-motor-activity-via-a-neural-mechanism-for-motor-inhibition
#18
Isabella Dutra, Darcy A Waller, Jan R Wessel
Motor inhibition is a cognitive control ability that allows humans to rapidly stop actions even after initiation. Understanding and improving motor inhibition could benefit adaptive behavior in both health and disease. We recently found that presenting surprising, task-unrelated sounds when stopping is necessary improves the likelihood of successful stopping. In the current study, we investigated the neural underpinnings of this effect. Specifically, we tested whether surprise-related stopping improvements are due to a genuine increase in motor inhibition...
January 5, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29304420/local-changes-in-computational-non-rapid-eye-movement-sleep-depth-in-infants
#19
Anna-Liisa Satomaa, Outi Saarenpää-Heikkilä, Eero Huupponen, Turkka Kirjavainen, Juhani Heinonen, Sari-Leena Himanen
OBJECTIVE: Deep NREM sleep and its hallmark EEG phenomenon slow wave activity (SWA) are under homeostatic control in adults. SWA is also locally regulated as it increases in the brain areas that have been used intensively. Moreover, in children, SWA is a marker of cortical maturation. In the present study the local properties of NREM sleep depth were evaluated using the quantitative mean frequency method. We aimed to study if age is related to NREM sleep depth in young infants. In addition, we studied if young infants have local differences in their NREM sleep...
October 16, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29299724/progress-in-eeg-multi-subject-decomposition-and-other-advanced-signal-processing-approaches
#20
EDITORIAL
René J Huster, Vince D Calhoun
No abstract text is available yet for this article.
January 3, 2018: Brain Topography
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