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https://www.readbyqxmd.com/read/28727639/effects-of-12-week-resistance-exercise-on-electroencephalogram-patterns-and-cognitive-function-in-the-elderly-with-mild-cognitive-impairment-a-randomized-controlled-trial
#1
Soon-Gook Hong, June-Hong Kim, Tae-Won Jun
OBJECTIVE: To investigate the effects of a 12-week resistance exercise program with an elastic band on electroencephalogram (EEG) patterns and cognitive function in elderly patients with mild cognitive impairment (MCI). DESIGN: Randomized controlled trial. SETTING: Community center. PARTICIPANTS: Twenty-two subjects with MCI and 25 healthy volunteer subjects were randomly assigned to 1 of 4 groups: subjects with MCI who undertook the exercise program (MCI-EX; n = 10), an MCI control group (MCI-Con; n = 12), a healthy volunteer exercise group (NG-EX; n = 12), and a healthy volunteer control group (NG-Con; n = 13)...
July 14, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28726513/effects-of-depression-and-past-year-binge-drinking-on-cognitive-control-processes-during-a-flanker-task-in-college-aged-adults
#2
Arin M Connell, Sarah Danzo, Glen Dawson
BACKGROUND: Recent but largely separate literatures have examined neurocognitive alterations related to both depression and binge drinking, suggesting similar patterns of impairments in attention control and decisional processes. However, depression and problematic alcohol use tend to co-occur, and few studies have examined whether cognitive processing effects of depression and binge drinking are independent or interacting. OBJECTIVE: The current study examined joint effects of depressive symptoms and past-year binge drinking on cognitive processing (measured via EEG assessment)...
July 20, 2017: American Journal of Drug and Alcohol Abuse
https://www.readbyqxmd.com/read/28726287/the-sound-and-the-fury-late-positive-potential-is-sensitive-to-sound-affect
#3
Darin R Brown, James F Cavanagh
Emotion is an emergent construct of multiple distinct neural processes. EEG is uniquely sensitive to real-time neural computations, and thus is a promising tool to study the construction of emotion. This series of studies aimed to probe the mechanistic contribution of the late positive potential (LPP) to multimodal emotion perception. Experiment 1 revealed that LPP amplitudes for visual images, sounds, and visual images paired with sounds were larger for negatively rated stimuli than for neutrally rated stimuli...
July 20, 2017: Psychophysiology
https://www.readbyqxmd.com/read/28725869/automated-approach-to-detecting-behavioral-states-using-eeg-dabs
#4
Zachary B Loris, Mathew Danzi, Justin Sick, W Dalton Dietrich, Helen M Bramlett, Thomas Sick
Electrocorticographic (ECoG) signals represent cortical electrical dipoles generated by synchronous local field potentials that result from simultaneous firing of neurons at distinct frequencies (brain waves). Since different brain waves correlate to different behavioral states, ECoG signals presents a novel strategy to detect complex behaviors. We developed a program, EEG Detection Analysis for Behavioral States (EEG-DABS) that advances Fast Fourier Transforms through ECoG signals time series, separating it into (user defined) frequency bands and normalizes them to reduce variability...
July 2017: Heliyon
https://www.readbyqxmd.com/read/28725190/reliability-of-eeg-interactions-differs-between-measures-and-is-specific-for-neurological-diseases
#5
Yvonne Höller, Kevin Butz, Aljoscha Thomschewski, Elisabeth Schmid, Andreas Uhl, Arne C Bathke, Georg Zimmermann, Santino O Tomasi, Raffaele Nardone, Wolfgang Staffen, Peter Höller, Markus Leitinger, Julia Höfler, Gudrun Kalss, Alexandra C Taylor, Giorgi Kuchukhidze, Eugen Trinka
Alterations of interaction (connectivity) of the EEG reflect pathological processes in patients with neurologic disorders. Nevertheless, it is questionable whether these patterns are reliable over time in different measures of interaction and whether this reliability of the measures is the same across different patient populations. In order to address this topic we examined 22 patients with mild cognitive impairment, five patients with subjective cognitive complaints, six patients with right-lateralized temporal lobe epilepsy, seven patients with left lateralized temporal lobe epilepsy, and 20 healthy controls...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28724928/on-wakefulness-fluctuations-as-a-source-of-bold-functional-connectivity-dynamics
#6
Ariel Haimovici, Enzo Tagliazucchi, Pablo Balenzuela, Helmut Laufs
Human brain dynamics and functional connectivity fluctuate over a range of temporal scales in coordination with internal states and environmental demands. However, the neurobiological significance and consequences of functional connectivity dynamics during rest have not yet been established. We show that the coarse-grained clustering of whole-brain dynamic connectivity measured with magnetic resonance imaging reveals discrete patterns (dynamic connectivity states) associated with wakefulness and sleep. We validate this using EEG in healthy subjects and patients with narcolepsy and by matching our results with previous findings in a large collaborative database...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28721058/clinical-patterns-and-outcomes-of-status-epilepticus-in-patients-with-tuberous-sclerosis-complex
#7
Hatem S Shehata, Hadeer Mahmoud AbdelGhaffar, Mohammed Nasreldin, Alaa Elmazny, Ahmed Abdelalim, Asmaa Sabbah, Nevin M Shalaby
INTRODUCTION: Refractory epilepsy is a common clinical manifestation in patients with tuberous sclerosis complex (TSC), which can be complicated by many life-threatening conditions, such as status epilepticus (SE). However, very few reports mention the patterns and semiology of SE in those patients. OBJECTIVE: To study the clinical characteristics and outcomes of SE in TSC patients. MATERIALS AND METHODS: This observational, prospective study was carried out on 36 Egyptian children with definite TSC...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28720523/sensory-attenuation-of-self-initiated-sounds-maps-onto-habitual-associations-between-motor-action-and-sound
#8
Nathan G Mifsud, Thomas J Whitford
Sensory attenuation refers to reduced brain responses to self-initiated sensations relative to those produced by the external world, a distinction that is vital for dynamic motor control and our sense of agency. Typically, willed vocalizations elicit larger N1 reduction of the auditory evoked potential compared to indirectly evoked sounds, such as tones generated by button-presses, which is attributed to the prediction and cancellation of incoming signals enabled by speech motor commands. However, physical confounds exist, including different stimuli and the increased motor artefact associated with mouth vs...
July 15, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28719739/graphene-electronic-tattoo-sensors
#9
Shideh Kabiri Ameri, Rebecca Ho, Hongwoo Jang, Li Tao, Youhua Wang, Liu Wang, David M Schnyer, Deji Akinwande, Nanshu Lu
Tattoo-like epidermal sensors are an emerging class of truly wearable electronics owing to their thinness and softness. While most of them are based on thin metal films, silicon membrane, or nanoparticle-based printable inks, we report a sub-micron thick, multimodal electronic tattoo sensors that are made of graphene. The graphene electronic tattoo (GET) is designed with filamentary serpentines and fabricated by a cost- and time-effective "wet transfer, dry patterning" method. It has a total thickness of 463 ± 30 nm, an optical transparency of ~85%, and a stretchability of more than 40%...
July 18, 2017: ACS Nano
https://www.readbyqxmd.com/read/28718773/mouse-epileptic-seizure-detection-with-multiple-eeg-features-and-simple-thresholding-technique
#10
Quang M Tieng, Ashwin Anbazhagan, Min Chen, David Charles Reutens
Epilepsy is a common neurological disorder characterized by recurrent, unprovoked seizures. The search for new treatments for seizures and epilepsy relies upon studies in animal models of epilepsy. To capture data on seizures, many applications require prolonged electroencephalography (EEG) with recordings that generate voluminous data. The desire for efficient evaluation of these recordings motivates the development of automated seizure detection algorithms. Approach: A new seizure detection method is proposed, based on multiple features and a simple thresholding technique...
July 18, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28716718/multivariate-pattern-analysis-of-meg-and-eeg-a-comparison-of-representational-structure-in-time-and-space
#11
Radoslaw Martin Cichy, Dimitrios Pantazis
Multivariate pattern analysis of magnetoencephalography (MEG) and electroencephalography (EEG) data can reveal the rapid neural dynamics underlying cognition. However, MEG and EEG have systematic differences in sampling neural activity. This poses the question to which degree such measurement differences consistently bias the results of multivariate analysis applied to MEG and EEG activation patterns. To investigate, we conducted a concurrent MEG/EEG study while participants viewed images of everyday objects...
July 14, 2017: NeuroImage
https://www.readbyqxmd.com/read/28713305/sequential-modulations-in-a-combined-horizontal-and-vertical-simon-task-is-there-erp-evidence-for-feature-integration-effects
#12
Katharina Hoppe, Kristina Küper, Edmund Wascher
In the Simon task, participants respond faster when the task-irrelevant stimulus position and the response position are corresponding, for example on the same side, compared to when they have a non-corresponding relation. Interestingly, this Simon effect is reduced after non-corresponding trials. Such sequential effects can be explained in terms of a more focused processing of the relevant stimulus dimension due to increased cognitive control, which transfers from the previous non-corresponding trial (conflict adaptation effects)...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28713258/relationship-of-topology-multiscale-phase-synchronization-and-state-transitions-in-human-brain-networks
#13
Minkyung Kim, Seunghwan Kim, George A Mashour, UnCheol Lee
How the brain reconstitutes consciousness and cognition after a major perturbation like general anesthesia is an important question with significant neuroscientific and clinical implications. Recent empirical studies in animals and humans suggest that the recovery of consciousness after anesthesia is not random but ordered. Emergence patterns have been classified as progressive and abrupt transitions from anesthesia to consciousness, with associated differences in duration and electroencephalogram (EEG) properties...
2017: Frontiers in Computational Neuroscience
https://www.readbyqxmd.com/read/28712947/cortical-dynamics-of-emotional-autobiographical-memory-retrieval-differ-between-women-and-men
#14
Joseph R Manns, Nicole L Varga, John B Trimper, Patricia J Bauer
Retrieval of autobiographical memories entails periods of search, access, and elaboration. Women's reports of their memories feature more detail and emotional content relative to men's. A key question is how these gender differences relate to unfolding changes in cortical activity during retrieval. We recorded EEG activity from 32 scalp electrodes as women and men were cued to retrieve positive, negative, and neutral autobiographical memories. Alpha (9-12Hz) oscillations were prominent at all EEG channels. Alpha coherence between channels was calculated as a measure of ms-level cortical synchrony...
July 13, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28711233/review-of-sleep-eeg-in-preterm-and-term-neonates
#15
Anneleen Dereymaeker, Kirubin Pillay, Jan Vervisch, Maarten De Vos, Sabine Van Huffel, Katrien Jansen, Gunnar Naulaers
Neonatal sleep is a crucial state that involves endogenous driven brain activity, important for neuronal survival and guidance of brain networks. Sequential EEG-sleep analysis in preterm infants provides insights into functional brain integrity and can document deviations of the biologically pre-programmed process of sleep ontogenesis during the neonatal period. Visual assessment of neonatal sleep-EEG, with integration of both cerebral and non-cerebral measures to better define neonatal state, is still considered the gold standard...
July 12, 2017: Early Human Development
https://www.readbyqxmd.com/read/28709992/time-dependent-evolution-of-seizures-in-a-model-of-mesial-temporal-lobe-epilepsy
#16
Charles Behr, Maxime Lévesque, Thomas Stroh, Massimo Avoli
Low-voltage fast (LVF) and hypersynchronous (HYP) - onset seizures occur in the EEG obtained with depth electrodes from mesial temporal lobe epilepsy (MTLE) patients and animal models. In epileptic rats analyzed up to approximately two weeks after pilocarpine-induced status epilepticus (SE), these patterns are associated with specific high-frequency oscillation (HFO) content: ripples (80-200Hz) or fast-ripples (250-500Hz) predominate in LVF or HYP seizures, respectively. To establish whether these features change over the course of the disease, we recorded the EEG from the hippocampal CA3 subfield, subiculum, entorhinal cortex and dentate gyrus in two groups of pilocarpine-treated rats: the "early stage group" (n=8) was analyzed from day 3 to 20 post-SE while the "late stage group" (n=7) was studied from day 27 to 53 post-SE...
July 12, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28709121/spatiotemporal-propagation-patterns-of-generalized-ictal-spikes-in-childhood-absence-epilepsy
#17
Vasileios Kokkinos, Andreas M Koupparis, Michalis Koutroumanidis, George K Kostopoulos
OBJECTIVE: This work investigates the spatial distribution in time of generalized ictal spikes in the typical absences of childhood absence epilepsy (CAE). METHODS: We studied twelve children with CAE, who had more than two typical absences during their routine video-EEG. Seizures were identified, and ictal spikes were marked over the maximum electronegative peak, clustered, waveform-averaged and spatiotemporaly analyzed in 2D electrode space. RESULTS: Consistency of spatiotemporal patterns of ictal spikes was high between the absences of the same child, but low between children...
June 17, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28708890/electroencephalographic-characterization-of-subgroups-of-children-with-learning-disorders
#18
Milene Roca-Stappung, Thalía Fernández, Jorge Bosch-Bayard, Thalía Harmony, Josefina Ricardo-Garcell
Electroencephalographic alterations have been reported in subjects with learning disorders, but there is no consensus on what characterizes their electroencephalogram findings. Our objective was to determine if there were subgroups within a group of scholars with not otherwise specified learning disorders and if they had specific electroencephalographic patterns. Eighty-five subjects (31 female, 8-11 years) who scored low in at least two subscales -reading, writing and arithmetic- of the Infant Neuropsychological Evaluation were included...
2017: PloS One
https://www.readbyqxmd.com/read/28706472/relevant-feature-integration-and-extraction-for-single-trial-motor-imagery-classification
#19
Lili Li, Guanghua Xu, Feng Zhang, Jun Xie, Min Li
Brain computer interfaces provide a novel channel for the communication between brain and output devices. The effectiveness of the brain computer interface is based on the classification accuracy of single trial brain signals. The common spatial pattern (CSP) algorithm is believed to be an effective algorithm for the classification of single trial brain signals. As the amplitude feature for spatial projection applied by this algorithm is based on a broad frequency bandpass filter (mainly 5-30 Hz) in which the frequency band is often selected by experience, the CSP is sensitive to noise and the influence of other irrelevant information in the selected broad frequency band...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28705474/rf-ablation-in-periventricular-heterotopia-related-epilepsy
#20
Massimo Cossu, Laura Mirandola, Laura Tassi
Drug-resistant focal epilepsy is a common occurrence in patients with gray matter nodular heterotopia (NH), and surgical treatment is often considered in these cases. NH-related epileptogenicity is sustained by complex networks, which may involve the nodules and extralesional cortex in various combinations. Therefore, invasive EEG is usually required to identify the structures involved in seizure generation. It has been reported that surgery may be effective in cases with unilateral lesions, whereas bilateral cases are not optimal candidates for surgical success...
July 3, 2017: Epilepsy Research
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