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https://www.readbyqxmd.com/read/28222346/inhibitory-control-in-euthymic-bipolar-disorder-event-related-potentials-during-a-go-nogo-task
#1
A M Morsel, M Dhar, W Hulstijn, A Temmerman, M Morrens, B Sabbe
OBJECTIVES: Patients with bipolar disorder (BD) are reported to have difficulties with inhibition, even in a euthymic state. However, the literature on cortical activity associated with response inhibition in BD remains ambiguous. This study investigates inhibition in euthymic BD using electrophysiological measures, while controlling for effects of specific medications. METHODS: Twenty patients with BD were compared with eighteen healthy controls on a Go/NoGo task while electroencephalogram was recorded...
December 18, 2016: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28220517/brain-electrical-activity-signatures-during-performance-of-the-multisource-interference-task
#2
Alberto J González-Villar, Maria T Carrillo-de-la-Peña
The Multisource Interference Task (MSIT) was developed to test cognitive control in normal and pathological conditions and has become a reliable tool for exploring the integrity of cingulo-frontal-parietal cognitive/attentional networks in fMRI studies. Analysis of EEG recordings made during performance of the MSIT may provide additional information about the temporal dynamics of cognitive control. However, this has not yet been investigated in depth. In this study, we analyzed the ERPs and carried out time-frequency decomposition of EEG recorded during control and interference conditions of the MSIT...
February 21, 2017: Psychophysiology
https://www.readbyqxmd.com/read/28220063/vibrotactile-discrimination-training-affects-brain-connectivity-in-profoundly-deaf-individuals
#3
Andrés A González-Garrido, Vanessa D Ruiz-Stovel, Fabiola R Gómez-Velázquez, Hugo Vélez-Pérez, Rebeca Romo-Vázquez, Ricardo A Salido-Ruiz, Aurora Espinoza-Valdez, Luis R Campos
Early auditory deprivation has serious neurodevelopmental and cognitive repercussions largely derived from impoverished and delayed language acquisition. These conditions may be associated with early changes in brain connectivity. Vibrotactile stimulation is a sensory substitution method that allows perception and discrimination of sound, and even speech. To clarify the efficacy of this approach, a vibrotactile oddball task with 700 and 900 Hz pure-tones as stimuli [counterbalanced as target (T: 20% of the total) and non-target (NT: 80%)] with simultaneous EEG recording was performed by 14 profoundly deaf and 14 normal-hearing (NH) subjects, before and after a short training period (five 1-h sessions; in 2...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28219796/simultaneous-quantitation-of-abiraterone-enzalutamide-n-desmethyl-enzalutamide-and-bicalutamide-in-human-plasma-by-lc-ms-ms
#4
Kyu-Pyo Kim, Robert A Parise, Julianne L Holleran, Lionel D Lewis, Leonard Appleman, Nielka van Erp, Michael J Morris, Jan H Beumer
Inhibiting the androgen receptor (AR) pathway is an important clinical strategy in metastatic prostate cancer. Novel agents including abiraterone acetate and enzalutamide have been shown to prolong life in men with metastatic, castration-resistant prostate cancer (mCRPC). To evaluate the pharmacokinetics of AR-targeted agents, we developed and validated an LC-MS/MS assay for the quantitation of enzalutamide, N-desmethyl enzalutamide, abiraterone and bicalutamide in 0.05mL human plasma. After protein precipitation, chromatographic separation was achieved with a Phenomenex Synergi Polar-RP column and a linear gradient of 0...
February 13, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28219628/subcortical-brain-volume-differences-in-participants-with-attention-deficit-hyperactivity-disorder-in-children-and-adults-a-cross-sectional-mega-analysis
#5
Martine Hoogman, Janita Bralten, Derrek P Hibar, Maarten Mennes, Marcel P Zwiers, Lizanne S J Schweren, Kimm J E van Hulzen, Sarah E Medland, Elena Shumskaya, Neda Jahanshad, Patrick de Zeeuw, Eszter Szekely, Gustavo Sudre, Thomas Wolfers, Alberdingk M H Onnink, Janneke T Dammers, Jeanette C Mostert, Yolanda Vives-Gilabert, Gregor Kohls, Eileen Oberwelland, Jochen Seitz, Martin Schulte-Rüther, Sara Ambrosino, Alysa E Doyle, Marie F Høvik, Margaretha Dramsdahl, Leanne Tamm, Theo G M van Erp, Anders Dale, Andrew Schork, Annette Conzelmann, Kathrin Zierhut, Ramona Baur, Hazel McCarthy, Yuliya N Yoncheva, Ana Cubillo, Kaylita Chantiluke, Mitul A Mehta, Yannis Paloyelis, Sarah Hohmann, Sarah Baumeister, Ivanei Bramati, Paulo Mattos, Fernanda Tovar-Moll, Pamela Douglas, Tobias Banaschewski, Daniel Brandeis, Jonna Kuntsi, Philip Asherson, Katya Rubia, Clare Kelly, Adriana Di Martino, Michael P Milham, Francisco X Castellanos, Thomas Frodl, Mariam Zentis, Klaus-Peter Lesch, Andreas Reif, Paul Pauli, Terry L Jernigan, Jan Haavik, Kerstin J Plessen, Astri J Lundervold, Kenneth Hugdahl, Larry J Seidman, Joseph Biederman, Nanda Rommelse, Dirk J Heslenfeld, Catharina A Hartman, Pieter J Hoekstra, Jaap Oosterlaan, Georg von Polier, Kerstin Konrad, Oscar Vilarroya, Josep Antoni Ramos-Quiroga, Joan Carles Soliva, Sarah Durston, Jan K Buitelaar, Stephen V Faraone, Philip Shaw, Paul M Thompson, Barbara Franke
BACKGROUND: Neuroimaging studies have shown structural alterations in several brain regions in children and adults with attention deficit hyperactivity disorder (ADHD). Through the formation of the international ENIGMA ADHD Working Group, we aimed to address weaknesses of previous imaging studies and meta-analyses, namely inadequate sample size and methodological heterogeneity. We aimed to investigate whether there are structural differences in children and adults with ADHD compared with those without this diagnosis...
February 16, 2017: Lancet Psychiatry
https://www.readbyqxmd.com/read/28218796/brain-activity-from-stimuli-that-are-not-perceived-visual-mismatch-negativity-during-binocular-rivalry-suppression
#6
Bradley N Jack, Andreas Widmann, Robert P O'Shea, Erich Schröger, Urte Roeber
Predictive coding explains visual perception as the result of an interaction between bottom-up sensory input and top-down generative models at each level of the visual hierarchy. Evidence for this comes from the visual mismatch negativity (vMMN): a more negative ERP for rare, unpredictable visual stimuli-deviants, than for frequent, predictable visual stimuli-standards. Here, we show that the vMMN does not require conscious experience. We measured the vMMN from monocular luminance-decrement deviants that were either perceived or not during binocular rivalry dominance or suppression, respectively...
February 20, 2017: Psychophysiology
https://www.readbyqxmd.com/read/28216240/gamma-band-neural-synchrony-due-to-autobiographical-fact-violation-in-a-self-referential-question
#7
Jeong Woo Choi, Kwang Su Cha, Ki-Young Jung, Kyung Hwan Kim
Our purpose was to investigate the cortical information processing of autobiographical fact violation (AFV) in self-referential questions. We expected that AFV in a self-referential question would evoke a characteristic pattern of neural synchrony and event-related potentials (ERPs). Averaged ERP and event-related synchronization in the gamma band were analyzed to observe differences between the processing of questions with and without AFV. Significant differences in ERP were found in the posterior area at 290-435 ms (N400) and in the frontal area at 520-800 ms (late positive component, LPC)...
February 16, 2017: Brain Research
https://www.readbyqxmd.com/read/28215877/my-friends-have-a-word-for-it-event-related-potentials-evidence-of-how-social-risk-inhibits-purchase-intention
#8
Qian Shang, Guanxiong Pei, Jia Jin
Social risk refers to the potential disapproval from significant others (especially family or friends), and it is crucial in dissuading consumers from making decisions to purchase. The current study explored the neural process underlying how social risk influenced people's purchase intention. Event-related potentials (ERPs) were employed to investigate the electrophysiological process when subjects evaluated their purchase intention for products with social risk factors. The behavioral data showed that the social risk condition inhibited people's purchase intention compared to the control condition...
February 12, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28214576/amplified-induced-neural-oscillatory-activity-predicts-musicians-benefits-in-categorical-speech-perception
#9
Gavin M Bidelman
Event-related brain potentials (ERPs) reveal musical experience refines neural encoding and confers stronger categorical perception (CP) and neural organization for speech sounds. In addition to evoked brain activity, the human EEG can be decomposed into induced (non-phase-locked) response whose various frequency bands reflect different mechanisms of perceptual-cognitive processing. Here, we aimed to clarify which spectral properties of these neural oscillations are most prone to music-related neuroplasticity and which are linked to behavioral benefits in the categorization of speech...
February 15, 2017: Neuroscience
https://www.readbyqxmd.com/read/28211449/translational-use-of-event-related-potentials-to-assess-circuit-integrity-in-asd
#10
REVIEW
Meera E Modi, Mustafa Sahin
Deficits in social cognition are the defining characteristic of autism spectrum disorder (ASD). Social cognition requires the integration of several neural circuits in a time-sensitive fashion, so impairments in social interactions could arise as a result of alterations in network connectivity. Electroencephalography (EEG) has revealed abnormalities in event related potentials (ERPs) evoked by auditory and visual sensory stimuli in humans with ASD, indicating disruption of neural connectivity. Similar abnormalities in sensory-evoked ERPs have been observed in animal models of ASD, suggesting that ERPs have the potential to provide a translational biomarker of the disorder...
February 17, 2017: Nature Reviews. Neurology
https://www.readbyqxmd.com/read/28208076/how-does-gaze-direction-affect-facial-processing-in-social-anxiety-an-erp-study
#11
Dan Li, Fengqiong Yu, Rong Ye, Xingui Chen, Xinhui Xie, Chunyan Zhu, Kai Wang
Previous behavioral studies have demonstrated an effect of eye gaze direction on the processing of emotional expressions in adults with social anxiety. However, specific brain responses to the interaction between gaze direction and facial expressions in social anxiety remain unclear. The present study aimed to explore the time course of such interaction using event-related potentials (ERPs) in participants with social anxiety. High socially anxious individuals and low socially anxious individuals were asked to identify the gender of angry or neutral faces with direct or averted gaze while their behavioral performance and electrophysiological data were monitored...
February 9, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28203752/molecular-profiles-of-benign-and-pre-malignant-endometrial-lesions
#12
Louis J M van der Putten, Renée van Hoof, Bastiaan B J Tops, Marc P L M Snijders, Saskia H van den Berg-van Erp, Anneke A M van der Wurff, Johan Bulten, Johanna M A Pijnenborg, Leon F A G Massuger
No abstract text is available yet for this article.
January 25, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28203210/auditory-and-visual-electrophysiology-of-deaf-children-with-cochlear-implants-implications-for-cross-modal-plasticity
#13
David P Corina, Shane Blau, Todd LaMarr, Laurel A Lawyer, Sharon Coffey-Corina
Deaf children who receive a cochlear implant early in life and engage in intensive oral/aural therapy often make great strides in spoken language acquisition. However, despite clinicians' best efforts, there is a great deal of variability in language outcomes. One concern is that cortical regions which normally support auditory processing may become reorganized for visual function, leaving fewer available resources for auditory language acquisition. The conditions under which these changes occur are not well understood, but we may begin investigating this phenomenon by looking for interactions between auditory and visual evoked cortical potentials in deaf children...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28198768/long-term-follow-up-of-humoral-immune-status-in-adult-lung-transplant-recipients
#14
Diana A van Kessel, Thijs W Hoffman, Johanna M Kwakkel-van Erp, Erik-Jan D Oudijk, Pieter Zanen, Ger T Rijkers, Jan C Grutters
BACKGROUND: Lung transplant recipients have an increased risk for infections in the posttransplant period due to immunosuppressive therapy. Protection against infections can be achieved through vaccination, but the optimal vaccination schedule in lung transplant recipients is unknown. Data on long-term immunological follow up and vaccination responses after lung transplantation are scarce. METHODS: Here we present long-term immunological follow up of a cohort of 55 lung transplant recipients...
February 14, 2017: Transplantation
https://www.readbyqxmd.com/read/28198452/undervaluing-delayed-rewards-explains-adolescents-impulsivity-in-inter-temporal-choice-an-erp-study
#15
Yunyun Huang, Ping Hu, Xueting Li
Adolescence has frequently been characterized as a period of choice impulsivity relative to adulthood. According to the control-integrated valuation model of inter-temporal choice, this choice impulsivity may be driven partly by an age-related difference in reward processing. We hypothesized that, compared to adults, adolescents would undervalue delayed rewards during reward processing and would thus be more impulsive in inter-temporal choice. To test this hypothesis at the behavioural and neural levels, we first measured the choice impulsivity of 18 adolescents and 19 adults using a delay discounting task (DDT)...
February 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28197120/is-inhibition-of-return-modulated-by-involuntary-orienting-of-spatial-attention-an-erp-study
#16
Fada Pan, Xiaogang Wu, Li Zhang
Inhibition of return (IOR) is a mechanism that indicates individuals' faster responses or higher accuracy to targets appearing in the novel location relative to the cued location. According to the "reorienting hypothesis," disengagement from the cued location is necessary for the generation of IOR. However, more and more studies have questioned this theory because of dissociation between voluntary or involuntary spatial orienting and the IOR effect. To further explore the "reorienting hypothesis" of IOR, the present experiment employed an atypical cue-target paradigm which combined a spatially non-predictive peripheral cue that was presumed to trigger IOR with a spatially non-predictive central cue that was used to reflexively trigger a shift of attention...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28197084/transcranial-alternating-current-stimulation-tacs-enhances-mental-rotation-performance-during-and-after-stimulation
#17
Florian H Kasten, Christoph S Herrmann
Transcranial alternating current stimulation (tACS) has been repeatedly demonstrated to modulate endogenous brain oscillations in a frequency specific manner. Thus, it is a promising tool to uncover causal relationships between brain oscillations and behavior or perception. While tACS has been shown to elicit a physiological aftereffect for up to 70 min, it remains unclear whether the effect can still be elicited if subjects perform a complex task interacting with the stimulated frequency band. In addition, it has not yet been investigated whether the aftereffect is behaviorally relevant...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28197067/naso-temporal-asymmetries-suppression-of-emotional-faces-in-the-temporal-visual-hemifield
#18
David Framorando, Mylène Bapst, Nathalie Vuille, Alan J Pegna
An ongoing debate exists regarding the possible existence of a retino-tectal visual pathway projecting to the amygdala, which would rapidly process information involving threatening or behaviorally-relevant stimuli. It has been suggested that this route might be responsible for the involuntary capture of attention by potentially dangerous stimuli. In separate studies, anatomical evidence has suggested that the retino-tectal pathway relies essentially on projections from the nasal hemiretina (temporal visual field)...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28196714/working-memory-load-modulates-the-neural-response-to-other-s-pain-evidence-from-an-erp-study
#19
Fang Cui, Xiangru Zhu, Yuejia Luo, Jiaping Cheng
The present study investigated the time course of processing other's pain under different conditions of working memory (WM) load. Event-related potentials (ERPs) were recorded while the participants held two digits (low WM load) or six digits (high WM load) in WM and viewed pictures that showed others who were in painful or non-painful situations. Robust WM-load × Picture interactions were found for the N2 and LPP components. In the high WM-load condition, painful pictures elicited significantly larger amplitudes than non-painful pictures...
February 11, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28195526/regulating-the-access-to-awareness-brain-activity-related-to-probe-related-and-spontaneous-reversals-in-binocular-rivalry
#20
Brian A Metzger, Kyle E Mathewson, Evelina Tapia, Monica Fabiani, Gabriele Gratton, Diane M Beck
Research on the neural correlates of consciousness (NCC) has implicated an assortment of brain regions, ERP components, and network properties associated with visual awareness. Recently, the P3b ERP component has emerged as a leading NCC candidate. However, typical P3b paradigms depend on the detection of some stimulus change, making it difficult to separate brain processes elicited by the stimulus itself from those associated with updates or changes in visual awareness. Here we used binocular rivalry to ask whether the P3b is associated with changes in awareness even in the absence of changes in the object of awareness...
February 14, 2017: Journal of Cognitive Neuroscience
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