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Functional electroencephalography

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https://www.readbyqxmd.com/read/28711663/cognitive-workload-across-the-spectrum-of-cognitive-impairments-a-systematic-review-of-physiological-measures
#1
REVIEW
Maud Ranchet, John C Morgan, Abiodun E Akinwuntan, Hannes Devos
Our objective was to identify the physiological measures that are sensitive to assessing cognitive workload across the spectrum of cognitive impairments. Three database searches were conducted: PubMed, PsychINFO, and Web of Science. Studies from the last decade that used physiological measures of cognitive workload in older adults (mean age >65 years-old) were reviewed. The cognitive workload of healthy older individuals was compared with the cognitive workload of younger adults, patients with mild cognitive impairment (MCI), and patients with Alzheimer's diseases (AD)...
July 12, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28710215/a-study-protocol-for-an-observational-cohort-investigating-cognitive-outcomes-and-wellness-in-survivors-of-critical-illness-the-cogwell-study
#2
M Elizabeth Wilcox, Andrew S Lim, Mary P McAndrews, Richard A Wennberg, Ruxandra L Pinto, Sandra E Black, Karolina D Walczak, Jan O Friedrich, Michael S Taglione, Gordon D Rubenfeld
INTRODUCTION: Up to 9 out of 10 intensive care unit (ICU) survivors will suffer some degree of cognitive impairment at hospital discharge and approximately half will have decrements that persist for years. The mechanisms for this newly acquired brain injury are poorly understood. The purpose of this study is to describe the prevalence of sleep abnormalities and their association with cognitive impairment, examine a well-known genetic risk factor for dementia (Apolipoprotein E ε4) that may allow for genetic risk stratification of ICU survivors at greatest risk of cognitive impairment and determine if electroencephalography (EEG) is an independent predictor of long-term cognitive impairment and possibly a candidate intermediate end point for future clinical trials...
July 13, 2017: BMJ Open
https://www.readbyqxmd.com/read/28707203/evaluating-cognitive-complaints-in-breast-cancer-survivors-with-the-fact-cog-and-quantitative-electroencephalography
#3
Kathleen Van Dyk, Aimee M Hunter, Linda Ercoli, Laura Petersen, Andrew F Leuchter, Patricia A Ganz
PURPOSE: Targeted methods for evaluating cognitive dysfunction in breast cancer survivors are needed to effectively address this important survivorship issue. To address this need, we examined the validity of a self-report instrument (The functional assessment of cancer therapy: cognitive function; FACT-Cog) regarding correspondence with neuropsychological performance versus depression and evaluated neurophysiological biomarkers of cognition and depressed mood in a sample of breast cancer survivors several years from diagnosis...
July 13, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28706262/impairment-of-neuroplasticity-in-the-dorsolateral-prefrontal-cortex-by-alcohol
#4
Genane Loheswaran, Mera S Barr, Reza Zomorrodi, Tarek K Rajji, Daniel M Blumberger, Bernard Le Foll, Zafiris J Daskalakis
Previous studies have demonstrated that alcohol consumption impairs neuroplasticity in the motor cortex. However, it is unknown whether alcohol produces a similar impairment of neuroplasticity in the dorsolateral prefrontal cortex (DLPFC), a brain region that plays an important role in cognitive functioning. The aim of the current study was to evaluate the effect of alcohol intoxication on neuroplasticity in the DLPFC. Paired associative stimulation (PAS) combined with electroencephalography (EEG) was used for the induction and measurement of associative LTP-like neuroplasticity in the DLPFC...
July 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28705994/wearable-brain-imaging-with-multi-modal-physiological-recording
#5
Gary E Strangman, Vladimir Ivkovic, Quan Zhang
The brain is a central component of cognitive and physical human performance. Measures including functional brain activation, cerebral perfusion, cerebral oxygenation, evoked electrical responses, and resting hemodynamic and electrical activity are all related to, or can predict health status or performance decrements. However, measuring brain physiology typically requires large, stationary machines that are not suitable for mobile or self-monitoring. Moreover, when individuals are ambulatory, systemic physiological fluctuations-e...
July 13, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28703275/predictors-of-cognitive-function-in-patients-with-hypothalamic-hamartoma-following-stereotactic-radiofrequency-thermocoagulation-surgery
#6
Masaki Sonoda, Hiroshi Masuda, Hiroshi Shirozu, Yosuke Ito, Kohei Akazawa, Eishi Asano, Shigeki Kameyama
OBJECTIVE: To determine the predictors of cognitive function in patients with drug-resistant gelastic seizures (GS) related to hypothalamic hamartoma (HH) before and after stereotactic radiofrequency thermocoagulation surgery (SRT). METHODS: We studied 88 patients with HH who underwent SRT between October 1997 and December 2014. Patients received neuropsychological tests preoperatively and postoperatively. Based on the preoperative measures, patients were categorized as "high-functioning" (full-scale intelligence quotient [FSIQ] ≥70; n = 48) and "low-functioning" group (FSIQ <70; n = 40)...
July 13, 2017: Epilepsia
https://www.readbyqxmd.com/read/28701933/network-efficiency-and-posterior-alpha-patterns-are-markers-of-recovery-from-general-anesthesia-a-high-density-electroencephalography-study-in-healthy-volunteers
#7
Stefanie Blain-Moraes, Vijay Tarnal, Giancarlo Vanini, Tarik Bel-Behar, Ellen Janke, Paul Picton, Goodarz Golmirzaie, Ben J A Palanca, Michael S Avidan, Max B Kelz, George A Mashour
Recent studies have investigated local oscillations, long-range connectivity, and global network patterns to identify neural changes associated with anesthetic-induced unconsciousness. These studies typically employ anesthetic protocols that either just cross the threshold of unconsciousness, or induce deep unconsciousness for a brief period of time-neither of which models general anesthesia for major surgery. To study neural patterns of unconsciousness and recovery in a clinically-relevant context, we used a realistic anesthetic regimen to induce and maintain unconsciousness in eight healthy participants for 3 h...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28701912/brain-responses-to-a-6-hz-binaural-beat-effects-on-general-theta-rhythm-and-frontal-midline-theta-activity
#8
Nantawachara Jirakittayakorn, Yodchanan Wongsawat
A binaural beat is a beat phenomenon that is generated by the dichotic presentation of two almost equivalent pure tones but with slightly different frequencies. The brain responses to binaural beats remain controversial; therefore, the aim of this study was to investigate theta activity responses to a binaural beat by controlling factors affecting localization, including beat frequency, carrier tone frequency, exposure duration, and recording procedure. Exposure to a 6-Hz binaural beat on a 250 Hz carrier tone for 30 min was utilized in this study...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28700538/autonomic-responses-to-tonic-pain-are-more-closely-related-to-stimulus-intensity-than-to-pain-intensity
#9
Moritz M Nickel, Elisabeth S May, Laura Tiemann, Martina Postorino, Son Ta Dinh, Markus Ploner
Pain serves the protection of the body by translating noxious stimulus information into a subjective percept and protective responses. Such protective responses rely on autonomic responses which allocate energy resources to protective functions. However, the precise relationship between objective stimulus intensity, subjective pain intensity, autonomic responses and brain activity is not fully clear yet. Here, we addressed this question by continuously recording pain ratings, skin conductance, heart rate and electroencephalography during tonic noxious heat stimulation of the hand in 39 healthy human subjects...
July 8, 2017: Pain
https://www.readbyqxmd.com/read/28698970/time-is-of-the-essence-a-review-of-electroencephalography-eeg-and-event-related-brain-potentials-erps-in-language-research
#10
REVIEW
Anna M Beres
The discovery of electroencephalography (EEG) over a century ago has changed the way we understand brain structure and function, in terms of both clinical and research applications. This paper starts with a short description of EEG and then focuses on the event-related brain potentials (ERPs), and their use in experimental settings. It describes the typical set-up of an ERP experiment. A description of a number of ERP components typically involved in language research is presented. Finally, the advantages and disadvantages of using ERPs in language research are discussed...
July 11, 2017: Applied Psychophysiology and Biofeedback
https://www.readbyqxmd.com/read/28698387/cortical-and-subcortical-coordination-of-visual-spatial-attention-revealed-by-simultaneous-eeg-fmri-recording
#11
Jessica J Green, Carsten N Boehler, Kenneth C Roberts, Ling-Chia Chen, Ruth M Krebs, Allen W Song, Marty G Woldorff
Visual spatial attention has been studied in humans with both electroencephalography (EEG) and functional magnetic resonance imaging (fMRI) individually. However, due to the intrinsic limitations of each of these methods used alone, our understanding of the systems-level mechanisms underlying attentional control remains limited. Here, we examined trial-to-trial covariations of concurrently recorded EEG and fMRI in a cued visual spatial-attention task in humans, which allowed delineation of both the generators and modulators of the cue-triggered event-related oscillatory brain activity underlying attentional-control function...
July 11, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28698343/protocol-for-an-observational-study-of-delirium-in-the-post-anaesthesia-care-unit-pacu-as-a-potential-predictor-of-subsequent-postoperative-delirium
#12
Victoria Cui, Catherine M Tedeschi, Vanessa L Kronzer, Sherry L McKinnon, Michael S Avidan
INTRODUCTION: Postoperative delirium can be a serious consequence of major surgery, associated with longer hospital stays, readmission, cognitive and functional deterioration and mortality. Delirium is an acute, reversible disorder characterised by fluctuating course, inattention, disorganised thinking and altered level of consciousness. Delirium occurring in the hours immediately following anaesthesia and delirium occurring in the postoperative period of 1-5 days have been described as distinct clinical entities...
July 10, 2017: BMJ Open
https://www.readbyqxmd.com/read/28698082/mechanisms-of-facial-emotion-recognition-in-autism-spectrum-disorders-insights-from-eye-tracking-and-electroencephalography
#13
REVIEW
Melissa H Black, Nigel T M Chen, Kartik K Iyer, Ottmar V Lipp, Sven Bölte, Marita Falkmer, Tele Tan, Sonya Girdler
While behavioural difficulties in facial emotion recognition (FER) have been observed in individuals with Autism Spectrum Disorder (ASD), behavioural studies alone are not suited to elucidate the specific nature of FER challenges in ASD. Eye tracking (ET) and electroencephalography (EEG) provide insights in to the attentional and neurological correlates of performance, and may therefore provide insight in to the mechanisms underpinning FER in ASD. Given that these processes develop over the course of the developmental trajectory, there is a need to synthesise findings in regard to the developmental stages to determine how the maturation of these systems may impact FER in ASD...
July 8, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28690497/high-amplitude-eeg-motor-potential-during-repetitive-foot-movement-possible-use-and-challenges-for-futuristic-bcis-that-restore-mobility-after-spinal-cord-injury
#14
Aljoscha Thomschewski, Yvonne Höller, Peter Höller, Stefan Leis, Eugen Trinka
Recent advances in neuroprostheses provide us with promising ideas of how to improve the quality of life in people suffering from impaired motor functioning of upper and lower limbs. Especially for patients after spinal cord injury (SCI), futuristic devices that are controlled by thought via brain-computer interfaces (BCIs) might be of tremendous help in managing daily tasks and restoring at least some mobility. However, there are certain problems arising when trying to implement BCI technology especially in such a heterogenous patient group...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28685437/relation-between-eeg-activity-and-brain-oxygenation-in-preterm-neonates
#15
Alexander Caicedo, Liesbeth Thewissen, Anne Smits, Gunnar Naulaers, Karel Allegaert, Sabine Van Huffel
This study investigates the relationship between brain oxygenation, assessed by means of near infrared spectroscopy (NIRS), and brain function, assessed by means of electroencephalography (EEG). Using NIRS signals measuring the regional cerebral oxygen saturation (rScO2) and computing the fractional tissue oxygen extraction (FTOE), we compared how these variables relate to different features extracted from the EEG, such as the inter-burst interval (IBI) duration and amplitude, the amplitude of the EEG, and the amplitude of the burst...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28682828/criteria-for-intensive-care-admission-and-monitoring-after-elective-craniotomy
#16
Rafael Badenes, Lara Prisco, Armando Maruenda, Fabio S Taccone
PURPOSE OF REVIEW: The current article revises the recent evidence on ICU admission criteria and postoperative neuromonitoring for patients undergoing elective craniotomy. RECENT FINDINGS: Only a small proportion of elective postoperative neurosurgical patients require specific medical interventions and invasive monitoring. Among these, patients undergoing elective craniotomy are frequently admitted to neuro-ICU, specialist postanaesthesia care units or intermediate-level care unit in the postoperative period...
July 5, 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/28679350/functional-work-breaks-in-a-high-demanding-work-environment-an-experimental-field-study
#17
André Scholz, Argang Ghadiri, Usha Singh, Johannes Wendsche, Theo Peters, Stefan Schneider
Work breaks are known to have positive effects on employees' health, performance and safety. Using a sample of twelve employees working in a stressful and cognitively demanding working environment, this experimental field study examined how different types of work breaks (boxing, deep relaxation and usual breaks) affect participants' mood, cognitive performance and neurophysiological state compared to a control condition without any break. In a repeated measures experimental design, cognitive performance was assessed using an auditory oddball test and a Movement Detection Test...
July 10, 2017: Ergonomics
https://www.readbyqxmd.com/read/28676697/a-novel-3d-printed-head-phantom-with-anatomically-realistic-geometry-and-continuously-varying-skull-resistivity-distribution-for-electrical-impedance-tomography
#18
Jie Zhang, Bin Yang, Haoting Li, Feng Fu, Xuetao Shi, Xiuzhen Dong, Meng Dai
Phantom experiments are an important step for testing during the development of new hardware or imaging algorithms for head electrical impedance tomography (EIT) studies. However, due to the sophisticated anatomical geometry and complex resistivity distribution of the human head, constructing an accurate phantom for EIT research remains challenging, especially for skull modelling. In this paper, we designed and fabricated a novel head phantom with anatomically realistic geometry and continuously varying skull resistivity distribution based on 3D printing techniques...
July 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28673881/a-multimodal-encoding-model-applied-to-imaging-decision-related-neural-cascades-in-the-human-brain
#19
REVIEW
Jordan Muraskin, Truman R Brown, Jennifer M Walz, Tao Tu, Bryan Conroy, Robin I Goldman, Paul Sajda
Perception and cognition in the brain are naturally characterized as spatiotemporal processes. Decision-making, for example depends on coordinated patterns of neural activity cascading across the brain, running in time from stimulus to response and in space from primary sensory regions to the frontal lobe. Measuring this cascade is key to developing an understanding of brain function. Here we report on a novel methodology that employs multi-modal imaging for inferring this cascade in humans at unprecedented spatiotemporal resolution...
June 30, 2017: NeuroImage
https://www.readbyqxmd.com/read/28671632/a-hybrid-fpga-based-system-for-eeg-and-emg-based-online-movement-prediction
#20
Hendrik Wöhrle, Marc Tabie, Su Kyoung Kim, Frank Kirchner, Elsa Andrea Kirchner
A current trend in the development of assistive devices for rehabilitation, for example exoskeletons or active orthoses, is to utilize physiological data to enhance their functionality and usability, for example by predicting the patient's upcoming movements using electroencephalography (EEG) or electromyography (EMG). However, these modalities have different temporal properties and classification accuracies, which results in specific advantages and disadvantages. To use physiological data analysis in rehabilitation devices, the processing should be performed in real-time, guarantee close to natural movement onset support, provide high mobility, and should be performed by miniaturized systems that can be embedded into the rehabilitation device...
July 3, 2017: Sensors
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