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Functional electroencephalography

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https://www.readbyqxmd.com/read/28813353/motor-cognition-and-neuroscience-in-sport-psychology
#1
REVIEW
Paul S Holmes, David J Wright
Advances in technology have allowed research in cognitive neuroscience to contribute significantly to the discipline of sport psychology. In most cases, the research has become more rigorous and has directed current thinking on the mechanisms subserving a number of psychological theories and models of practice. Currently, the three most common neuroscience techniques informing sport and exercise research are electroencephalography, transcranial magnetic stimulation and functional magnetic resonance imaging...
August 2017: Current Opinion in Psychology
https://www.readbyqxmd.com/read/28813231/time-frequency-cross-mutual-information-analysis-of-the-brain-functional-networks-underlying-multiclass-motor-imagery
#2
Anmin Gong, Jianping Liu, Si Chen, Yunfa Fu
To study the physiologic mechanism of the brain during different motor imagery (MI) tasks, the authors employed a method of brain-network modeling based on time-frequency cross mutual information obtained from 4-class (left hand, right hand, feet, and tongue) MI tasks recorded as brain-computer interface (BCI) electroencephalography data. The authors explored the brain network revealed by these MI tasks using statistical analysis and the analysis of topologic characteristics, and observed significant differences in the reaction level, reaction time, and activated target during 4-class MI tasks...
August 16, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28809649/linking-neuroscience-function-and-intervention-a-scoping-review-of-sensory-processing-and-mental-illness
#3
Antoine L Bailliard, Stephanie C Whigham
PURPOSE: Sensory approaches to mental illness are increasingly prominent in occupational therapy. Despite indicators of efficacy, a paucity of literature supports these approaches. This article provides a scoping review of research on the relationship between sensory processing and mental illness. METHOD: Using Arksey and O'Malley's (2005) framework, we mapped this area of research and identified gaps in the knowledge base. We searched PubMed, CINAHL Plus, PsycINFO, OTseeker, and the Cochrane Library using the terms sensory and mental health...
September 2017: American Journal of Occupational Therapy: Official Publication of the American Occupational Therapy Association
https://www.readbyqxmd.com/read/28805731/the-role-of-visual-noise-in-influencing-mental-load-and-fatigue-in-a-steady-state-motion-visual-evoked-potential-based-brain-computer-interface
#4
Jun Xie, Guanghua Xu, Ailing Luo, Min Li, Sicong Zhang, Chengcheng Han, Wenqiang Yan
As a spatial selective attention-based brain-computer interface (BCI) paradigm, steady-state visual evoked potential (SSVEP) BCI has the advantages of high information transfer rate, high tolerance to artifacts, and robust performance across users. However, its benefits come at the cost of mental load and fatigue occurring in the concentration on the visual stimuli. Noise, as a ubiquitous random perturbation with the power of randomness, may be exploited by the human visual system to enhance higher-level brain functions...
August 14, 2017: Sensors
https://www.readbyqxmd.com/read/28804712/virtual-and-actual-humanoid-robot-control-with-four-class-motor-imagery-based-optical-brain-computer-interface
#5
Alyssa M Batula, Youngmoo E Kim, Hasan Ayaz
Motor-imagery tasks are a popular input method for controlling brain-computer interfaces (BCIs), partially due to their similarities to naturally produced motor signals. The use of functional near-infrared spectroscopy (fNIRS) in BCIs is still emerging and has shown potential as a supplement or replacement for electroencephalography. However, studies often use only two or three motor-imagery tasks, limiting the number of available commands. In this work, we present the results of the first four-class motor-imagery-based online fNIRS-BCI for robot control...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28804453/delta-power-is-higher-and-more-symmetrical-in-ischemic-stroke-patients-with-cortical-involvement
#6
Chiara Fanciullacci, Federica Bertolucci, Giuseppe Lamola, Alessandro Panarese, Fiorenzo Artoni, Silvestro Micera, Bruno Rossi, Carmelo Chisari
A brain injury resulting from unilateral stroke critically alters brain functionality and the complex balance within the cortical activity. Such modifications may critically depend on lesion location and cortical involvement. Indeed, recent findings pointed out the necessity of applying a stratification based on lesion location when investigating inter-hemispheric balance in stroke. Here, we tested whether cortical involvement could imply differences in band-specific activity and brain symmetry in post stroke patients with cortico-subcortical and subcortical strokes...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28800613/ongoing-slow-oscillatory-phase-modulates-speech-intelligibility-in-cooperation-with-motor-cortical-activity
#7
Takayuki Onojima, Keiichi Kitajo, Hiroaki Mizuhara
Neural oscillation is attracting attention as an underlying mechanism for speech recognition. Speech intelligibility is enhanced by the synchronization of speech rhythms and slow neural oscillation, which is typically observed as human scalp electroencephalography (EEG). In addition to the effect of neural oscillation, it has been proposed that speech recognition is enhanced by the identification of a speaker's motor signals, which are used for speech production. To verify the relationship between the effect of neural oscillation and motor cortical activity, we measured scalp EEG, and simultaneous EEG and functional magnetic resonance imaging (fMRI) during a speech recognition task in which participants were required to recognize spoken words embedded in noise sound...
2017: PloS One
https://www.readbyqxmd.com/read/28800575/disruption-of-frontal-parietal-connectivity-during-conscious-sedation-by-propofol-administration
#8
Pil-Jong Kim, Hong-Gee Kim, Gyu-Jeong Noh, Yong-Seo Koo, Teo Jeon Shin
The sedative state is a transitional state from wakefulness to general anesthesia. However, little is understood regarding the mechanism of conscious sedation, different from general anesthesia while maintaining wakefulness. In this study, we aimed to investigate changes in functional connectivity of the parietal-frontal network, implicated in wakefulness during conscious sedation induced by propofol infusion. The electroencephalography was obtained at the frontal and parietal areas of adult volunteers who maintain wakefulness during low-dose propofol infusion (1...
August 10, 2017: Neuroreport
https://www.readbyqxmd.com/read/28798694/decomposing-multifractal-crossovers
#9
Zoltan Nagy, Peter Mukli, Peter Herman, Andras Eke
Physiological processes-such as, the brain's resting-state electrical activity or hemodynamic fluctuations-exhibit scale-free temporal structuring. However, impacts common in biological systems such as, noise, multiple signal generators, or filtering by transport function, result in multimodal scaling that cannot be reliably assessed by standard analytical tools that assume unimodal scaling. Here, we present two methods to identify breakpoints or crossovers in multimodal multifractal scaling functions. These methods incorporate the robust iterative fitting approach of the focus-based multifractal formalism (FMF)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28790910/hybrid-brain-computer-interface-techniques-for-improved-classification-accuracy-and-increased-number-of-commands-a-review
#10
REVIEW
Keum-Shik Hong, Muhammad Jawad Khan
In this article, non-invasive hybrid brain-computer interface (hBCI) technologies for improving classification accuracy and increasing the number of commands are reviewed. Hybridization combining more than two modalities is a new trend in brain imaging and prosthesis control. Electroencephalography (EEG), due to its easy use and fast temporal resolution, is most widely utilized in combination with other brain/non-brain signal acquisition modalities, for instance, functional near infrared spectroscopy (fNIRS), electromyography (EMG), electrooculography (EOG), and eye tracker...
2017: Frontiers in Neurorobotics
https://www.readbyqxmd.com/read/28776683/hypercapnia-induced-active-expiration-increases-in-sleep-and-enhances-ventilation-in-unanaesthetized-rats
#11
Isabela P Leirão, Carlos A Silva, Luciane H Gargaglioni, Glauber S F da Silva
Expiration is passive at rest but becomes active through recruitment of abdominal muscles under increased respiratory drive. Hypercapnia-induced active expiration has not been well explored in unanaesthetized rats. We hypothesized that (i) CO2 -evoked active expiration is recruited in a state-dependent manner i.e. differently in sleep or wakefulness and (ii) that recruitment of active expiration enhances ventilation, hence having an important functional role in meeting metabolic demand. To test these hypotheses Wistar rats (280-330 g) were implanted with electrodes for electroencephalography (EEG) and electromyography (EMG) of the neck, diaphragm (DIA) and abdominal (ABD) muscles...
August 3, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28774794/the-acute-effects-of-aerobic-exercise-on-cognitive-control-among-people-with-chronic-stroke
#12
Karli Swatridge, Kayla Regan, William Richard Staines, Eric Roy, Laura Elizabeth Middleton
BACKGROUND: Over half of stroke survivors have cognitive impairment, which impedes rehabilitation and functional recovery. Evidence suggests a single session of aerobic exercise improves cognitive functions among healthy adults. Whether this holds true for stroke survivors is unclear. The objective of this study was to examine whether one session of moderate-intensity aerobic exercise improves the cognitive control and attention of stroke survivors. METHODS: Nine people with chronic stroke (≥6 months poststroke) performed a modified Eriksen Flanker task with concurrent electroencephalography (EEG) before and immediately, 20 minutes, and 40 minutes after 20 minutes of moderate-intensity exercise and after 20 minutes of rest...
July 31, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28769775/measuring-mental-workload-with-eeg-fnirs
#13
Haleh Aghajani, Marc Garbey, Ahmet Omurtag
We studied the capability of a Hybrid functional neuroimaging technique to quantify human mental workload (MWL). We have used electroencephalography (EEG) and functional near-infrared spectroscopy (fNIRS) as imaging modalities with 17 healthy subjects performing the letter n-back task, a standard experimental paradigm related to working memory (WM). The level of MWL was parametrically changed by variation of n from 0 to 3. Nineteen EEG channels were covering the whole-head and 19 fNIRS channels were located on the forehead to cover the most dominant brain region involved in WM...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28769749/attention-in-and-out-scalp-level-and-intracranial-eeg-correlates-of-interoception-and-exteroception
#14
Indira García-Cordero, Sol Esteves, Ezequiel P Mikulan, Eugenia Hesse, Fabricio H Baglivo, Walter Silva, María Del Carmen García, Esteban Vaucheret, Carlos Ciraolo, Hernando S García, Federico Adolfi, Marcos Pietto, Eduar Herrera, Agustina Legaz, Facundo Manes, Adolfo M García, Mariano Sigman, Tristán A Bekinschtein, Agustín Ibáñez, Lucas Sedeño
Interoception, the monitoring of visceral signals, is often presumed to engage attentional mechanisms specifically devoted to inner bodily sensing. In fact, most standardized interoceptive tasks require directing attention to internal signals. However, most studies in the field have failed to compare attentional modulations between internally- and externally-driven processes, thus probing blind to the specificity of the former. Here we address this issue through a multidimensional approach combining behavioral measures, analyses of event-related potentials and functional connectivity via high-density electroencephalography, and intracranial recordings...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28768743/the-influence-of-pain-on-motor-preparation-in-the-human-brain
#15
Martina Postorino, Elisabeth S May, Moritz M Nickel, Laura Tiemann, Markus Ploner
The protective function of pain depends on appropriate motor responses to avoid injury and promote recovery. The preparation and execution of motor responses is, thus, an essential part of pain. However, it is not yet fully understood how pain and motor processes interact in the brain. We here used electroencephalography to investigate the effects of pain on motor preparation in the human brain. 20 healthy human participants performed a motor task in which they performed button presses to stop increasingly painful thermal stimuli when they became intolerable...
August 2, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28768447/neural-oscillation-correlates-chemistry-decision-making
#16
Li-Yu Huang, Hsiao-Ching She, Tzyy-Ping Jung
This study explored the electroencephalography (EEG) dynamics during a chemistry-related decision-making task and further examined whether the correctness of the decision-making performance could be reflected by EEG activity. A total of 66 undergraduate students' EEG were collected while they participated in a chemistry-related decision-making task in which they had to retrieve the relevant chemistry concepts in order to make correct decisions for each task item. The results showed that it was only in the anterior cingulate cortex (ACC) cluster that distinct patterns in EEG dynamics were displayed for the correct and incorrect responses...
May 7, 2017: International Journal of Neural Systems
https://www.readbyqxmd.com/read/28764939/exercise-related-cognitive-effects-on-sensory-motor-control-in-athletes-and-drummers-compared-to-non-athletes-and-other-musicians
#17
V Bianco, M Berchicci, R L Perri, F Quinzi, F Di Russo
Both playing a musical instrument and playing sport produce brain adaptations that might affect sensory-motor functions. While the benefits of sport practice have traditionally been attributed to aerobic fitness, it is still unknown whether playing an instrument might induce similar brain adaptations, or if a specific musical instrument like drums might be associated to specific benefits because of its high energy expenditure. Since the aerobic costs of playing drums was estimated to be comparable to those of average sport activities, we hypothesized that these two groups might show both behavioral and neurocognitive similarities...
July 29, 2017: Neuroscience
https://www.readbyqxmd.com/read/28755545/stereo-electroencephalography-identifies-n2-sleep-and-spindles-in-human-hippocampus
#18
Nicolas Carpentier, Thierry Cecchin, Laurent Koessler, Valérie Louis-Dorr, Jacques Jonas, Jean-Pierre Vignal, Marc Carpentier, William Szurhaj, Patrice Bourgin, Louis Maillard
OBJECTIVES: To describe the hippocampal stereo-electroencephalogram during sleep according to sleep stages (including N2 sleep) and cycles, together with the hippocampal spindles. METHODS: All patients with drug-resistant focal epilepsy undergoing intra-hippocampal implantation between August 2012 and June 2013 at Nancy University Hospital were screened. Six patients with explored hippocampus devoid of pathological features were analyzed. During one night, we identified continuous periods of successive N2, N3 and REM sleep for two full cycles...
July 8, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28750035/the-modulation-of-eeg-variability-between-internally-and-externally-driven-cognitive-states-varies-with-maturation-and-task-performance
#19
Jessie M H Szostakiwskyj, Stephanie E Willatt, Filomeno Cortese, Andrea B Protzner
Increasing evidence suggests that brain signal variability is an important measure of brain function reflecting information processing capacity and functional integrity. In this study, we examined how maturation from childhood to adulthood affects the magnitude and spatial extent of state-to-state transitions in brain signal variability, and how this relates to cognitive performance. We looked at variability changes between resting-state and task (a symbol-matching task with three levels of difficulty), and within trial (fixation, post-stimulus, and post-response)...
2017: PloS One
https://www.readbyqxmd.com/read/28749544/combined-electroencephalography-functional-magnetic-resonance-imaging-and-electrical-source-imaging-improves-localization-of-pediatric-focal-epilepsy
#20
Maria Centeno, Tim M Tierney, Suejen Perani, Elhum A Shamshiri, Kelly St Pier, Charlotte Wilkinson, Daniel Konn, Serge Vulliemoz, Frédéric Grouiller, Louis Lemieux, Ronit M Pressler, Christopher A Clark, J Helen Cross, David W Carmichael
OBJECTIVE: Surgical treatment in epilepsy is effective if the epileptogenic zone (EZ) can be correctly localized and characterized. Here we use simultaneous electroencephalography-functional magnetic resonance imaging (EEG-fMRI) data to derive EEG-fMRI and electrical source imaging (ESI) maps. Their yield and their individual and combined ability to (1) localize the EZ and (2) predict seizure outcome were then evaluated. METHODS: Fifty-three children with drug-resistant epilepsy underwent EEG-fMRI...
July 27, 2017: Annals of Neurology
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