Article
Computer Science, Artificial Intelligence
Fabrizio Lombardi, Oren Shriki, Hans J. Herrmann, Lucilla de Arcangelis
Summary: Resting-state brain activity is characterized by neuronal avalanches without characteristic size, indicating criticality and long-range correlations in brain functioning. Analyzing temporal correlations in broadband brain activity through neuronal avalanches may provide insights into normal and pathological behaviors in complex cortical rhythms.
Article
Clinical Neurology
Jue Huang, Eike Ahlers, Holger Bogatsch, Pierre Bohme, Thomas Ethofer, Andreas J. Fallgatter, Jurgen Gallinat, Ulrich Hegerl, Isabella Heuser, Knut Hoffmann, Sarah Kittel-Schneider, Andreas Reif, Daniel Schottle, Stefan Unterecker, Matti Gartner, Maria Strauss
Summary: This study investigated the presence of aberrant long-range temporal correlations (LRTCs) in the neuronal activities of individuals with attention deficit/hyperactivity disorder (ADHD), and examined the impact of comorbid depression on LRTC and the effectiveness of psychostimulant therapy. The results showed significant LRTCs in all investigated frequency bands, but no significant differences in LRTC between ADHD patients with and without depressive symptoms. However, depressed ADHD patients seemed to benefit more from psychostimulant therapy based on self-report.
EUROPEAN ARCHIVES OF PSYCHIATRY AND CLINICAL NEUROSCIENCE
(2022)
Article
Neurosciences
Yan Huang, Yao Deng, Lingda Kong, Xiumei Zhang, Xiaobao Wei, Tianxin Mao, Yong Xu, Caihong Jiang, Hengyi Rao
Summary: There is a significant positive correlation between individuals' vigilance and resting EEG alpha oscillations in the occipital and frontal regions and their word learning ability. This association is mediated by vigilant attention.
Article
Psychology, Biological
Jie Zhang, Xiyan Li, Shiwei Liu, Can Xu, Zhijie Zhang
Summary: In this study, electroencephalogram data was analyzed to compare the resting network activation between heavy media multitaskers (HMM) and light media multitaskers (LMM). The results showed that HMM had weaker activation in the attention network, but enhanced activation in the salience network. They also had an enhanced visual network and may feel less comfortable during resting-state periods. This suggests that chronic media multitasking leads to a bottom-up or stimulus-driven allocation of attention for HMM, while LMM use a top-down approach.
INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY
(2024)
Article
Neurosciences
Mara Golemme, Elisa Tatti, Caroline Di Bernardi Luft, Joydeep Bhattacharya, Maria Herrojo Ruiz, Marinella Cappelletti
Summary: Individual differences in utilizing retrospective cues in working memory tasks may be associated with brain oscillatory activity at rest. Behavioral flexibility is defined as the ability to effectively use or disregard retrospective cues as required.
EUROPEAN JOURNAL OF NEUROSCIENCE
(2021)
Article
Psychiatry
Stephan Lechner, Georg Northoff
Summary: Using EEG, our study investigates the temporal precision and regularity of phase coherence in healthy, schizophrenia, and bipolar disorder participants during resting state. By applying a novel methodology called nominal frequency phase stability (NFPS), we found increased irregularities in theta activity over a frontocentral electrode in patients with schizophrenia.
ASIAN JOURNAL OF PSYCHIATRY
(2023)
Article
Neurosciences
Shanice E. W. Janssens, Sanne Ten Oever, Alexander T. Sack, Tom A. de Graaf
Summary: Transcranial alternating current stimulation (tACS) is used to study the effects of oscillatory brain mechanisms on cognition and behavior. A new approach, Broadband-alpha-tACS, significantly modulated attention task performance and shows promise for further exploration in future studies.
Article
Behavioral Sciences
Gian Marco Duma, Alberto Danieli, Marcelo G. Mattar, Martina Baggio, Airis Vettorel, Paolo Bonanni, Giovanni Mento
Summary: This study investigated the differences in dynamic network reconfiguration between patients with temporal lobe epilepsy (TLE) and a healthy control group. The findings revealed significant differences in flexibility and integration between the two groups. Patients with TLE showed lower flexibility in brain areas related to cognitive control and attention, as well as excessive inter-network communication. Moreover, the study found correlations between network integration and reduced cognitive performance in visual attention, executive functions, and long-term memory.
Article
Neurosciences
F. von Wegner, S. Bauer, F. Rosenow, J. Triesch, H. Laufs
Summary: The study examines spatio-temporal patterns in EEG through microstate analysis, revealing a link between resting-state microstates and alpha frequencies, as well as periodic recurrence. It was found that only the phase component contributes to the periodicity of microstate sequences, while amplitude sequences exhibit a slow and monotonic information decay. By simulating EEG dynamics with coupled nonlinear oscillators, similar phase-amplitude dynamics were observed, particularly during a supercritical Hopf bifurcation.
Article
Neurosciences
Menghang Li, Min Qiu, Li Zhu, Wanzeng Kong
Summary: This paper proposes a spatial-temporal hypergraph convolutional network (STHGCN) for emotion recognition, which captures higher-order relationships among EEG channels and higher-order relationships inside EEG series by constructing feature hypergraphs, and initializes and updates the relationships of EEG series with a self-attention mechanism. The experimental results demonstrate that the constructed feature hypergraphs effectively capture the correlations among valuable EEG channels and inside valuable EEG series, leading to the best emotion recognition accuracy among the graph methods.
COGNITIVE NEURODYNAMICS
(2023)
Article
Neurosciences
Yichen Zhang, Linlin Ye, Lei Cao, Weiqun Song
Summary: This study aimed to explore the electrophysiological characteristics of resting-state electroencephalography (rsEEG) in patients with visuospatial neglect (VSN) after stroke. The study found that patients with VSN showed specific power changes in resting-state EEG, which were correlated with their functional state.
FRONTIERS IN NEUROSCIENCE
(2022)
Article
Neurosciences
Hang Wu, Qiuyou Xie, Jiahui Pan, Qimei Liang, Yue Lan, Yequn Guo, Junrong Han, Musi Xie, Yueyao Liu, Liubei Jiang, Xuehai Wu, Yuanqing Li, Pengmin Qin
Summary: Using task-dependent neuroimaging techniques, recent studies have found patients with disorders of consciousness (DOC) who show signs of awareness but cannot perform specific tasks accurately due to cognitive impairments, leading to false-negative findings. This study investigates the use of temporal stability as a tool to detect cognitive functions and identify cognitive motor dissociation (CMD) in DOC patients. The results show that temporal stability is impaired in DOC patients and that a Support Vector Machine (SVM) model based on temporal stability can accurately distinguish DOC patients from controls and identify CMD.
Article
Behavioral Sciences
Zaira Romeo, Dante Mantini, Eugenia Durgoni, Laura Passarini, Francesca Meneghello, Marco Zorzi
Summary: Localized brain damage can lead to specific cognitive deficits, while stroke lesions can also alter the functional connectivity of intrinsic brain networks, impacting behavior. By analyzing the relationship between EEG patterns and cognitive performance, researchers identified specific EEG frequency bands associated with distinct cognitive impairments.
Article
Physics, Multidisciplinary
Juan Ruiz de Miras, Chiara-Camilla Derchi, Tiziana Atzori, Alice Mazza, Pietro Arcuri, Anna Salvatore, Jorge Navarro, Francesca Lea Saibene, Mario Meloni, Angela Comanducci
Summary: Complexity analysis of EEG signals has been proven valuable for characterizing PD. FD is widely used for measuring complexity, but little is known about the fractal characteristics of EEG in PD measured by FD. This study analyzed EEG in PD using 4DFD and found significantly higher 4DFD values in the PD group. Additionally, 4DFD obtained a high AUC value of 0.97 for PD diagnosis, suggesting its potential as a method for characterizing specific changes in brain dynamics associated with PD.
Article
Geriatrics & Gerontology
Alba Fernandez, Giuseppe Noce, Claudio Del Percio, Diego Pinal, Fernando Diaz, Cristina Lojo-Seoane, Montserrat Zurron, Claudio Babiloni
Summary: This exploratory study investigated the effect of cognitive tasks on cortical arousal during the resting state in aged individuals. The results showed that engagement in memory tasks perturbed cortical arousal for more than 5 minutes after task completion, and this effect was dependent on participants' global cognitive status.
FRONTIERS IN AGING NEUROSCIENCE
(2022)
Article
Anatomy & Morphology
Anna-Thekla P. Jaeger, Julia M. Huntenburg, Stefanie A. Tremblay, Uta Schneider, Sophia Grahl, Julia Huck, Christine L. Tardif, Arno Villringer, Claudine J. Gauthier, Pierre-Louis Bazin, Christopher J. Steele
Summary: This study investigated plastic alterations in whole-brain functional connectivity after learning a complex motor sequence, finding sequence-specific decreases in functional connectivity in the right supplementary motor area (SMA) during overall learning. Additionally, connectivity changes in the superior parietal cortex (SPC) were not related to sequence-specific learning, but rather linked to motor execution.
BRAIN STRUCTURE & FUNCTION
(2022)
Article
Neurosciences
Rachel G. Zsido, Eoin N. Molloy, Elena Cesnaite, Gergana Zheleva, Nathalie Beinholzl, Ulrike Scharrer, Fabian A. Piecha, Ralf Regenthal, Arno Villringer, Vadim V. Nikulin, Julia Sacher
Summary: This study demonstrates the potential for the 1/f slope to predict individual cortical responsivity to SSRIs in the healthy human brain, thereby providing a wider understanding of the human brain.
HUMAN BRAIN MAPPING
(2022)
Article
Multidisciplinary Sciences
Nico Lehmann, Arno Villringer, Marco Taubert
Summary: Recent evidence has shown that cardiovascular exercise plays a role in improving motor performance and learning. This study conducted a randomized controlled trial and found that subjects receiving cardiovascular exercise showed different patterns of learning-related brain plasticity compared to non-exercise controls, and these changes correlated with improved motor learning. Additionally, the study also found alterations in spontaneous neural activity at rest, indicating a meaningful link between structural and functional plasticity.
SCIENTIFIC REPORTS
(2022)
Article
Neurosciences
Natalie Kohler, Giacomo Novembre, Katarzyna Gugnowska, Peter E. Keller, Arno Villringer, Daniela Sammler
Summary: Joint music performance requires flexible sensorimotor coordination between self and other, influenced by shared knowledge and temporal synchrony. A study found that pianists who practiced their partner's part showed stronger activity and connectivity within cortico-cerebellar audio-motor networks, indicating internal model simulation and anticipation of partner's feedback. However, when there were subtle asynchronies between model-based anticipations and perceived sensory outcomes of partner actions, pianists exhibited stronger cerebellar activity and reduced behavioral adaptation, indicating a shift towards self-other segregation.
Article
Neurosciences
Ahmed A. Khalil, Ayse C. Tanritanir, Ulrike Grittner, Evgeniya Kirilina, Arno Villringer, Jochen B. Fiebach, Ralf Mekle
Summary: In this study, the reproducibility of BOLD delay was assessed in 136 subjects with normal cerebral perfusion. The highest reproducibility was observed in the posterior cerebral artery territory. Overall, BOLD delay showed good reproducibility, but caution should be exercised when interpreting longitudinal BOLD delay changes that are either very small or located in certain brain regions.
HUMAN BRAIN MAPPING
(2023)
Article
Multidisciplinary Sciences
H. Lina Schaare, Maria Bloechl, Deniz Kumral, Marie Uhlig, Lorenz Lemcke, Sofie L. Valk, Arno Villringer
Summary: The study demonstrates an association between blood pressure and depressive symptoms, well-being, and emotion-related brain activity, which may be relevant to hypertension. Using extensive data from the UK Biobank, the study resolves contradictions and explores the relationship between mental health, systolic blood pressure, and hypertension. It shows that higher systolic blood pressure is associated with fewer depressive symptoms, greater well-being, and lower emotion-related brain activity.
NATURE COMMUNICATIONS
(2023)
Article
Psychiatry
Dirk Alexander Wittekind, Juergen Kratzsch, Roland Mergl, Kerstin Wirkner, Ronny Baber, Christian Sander, A. Veronica Witte, Arno Villringer, Michael Kluge
Summary: The study found that childhood trauma has long-term effects on the ghrelin system, with childhood sexual abuse being significantly associated with higher ghrelin serum levels. However, other childhood traumas did not show a significant association with ghrelin levels.
TRANSLATIONAL PSYCHIATRY
(2023)
Article
Endocrinology & Metabolism
Haiko Schloegl, Arno Villringer, Konstanze Miehle, Mathias Fasshauer, Michael Stumvoll, Karsten Mueller
Summary: This study replicated previous findings on the increase of brain connectivity in the hypothalamus and posterior cingulate gyrus in patients with lipodystrophy (LD) undergoing metreleptin treatment. These results contribute to understanding the central nervous effects of leptin and provide a foundation for future research.
JOURNAL OF THE ENDOCRINE SOCIETY
(2023)
Article
Endocrinology & Metabolism
Haiko Schloegl, Lieneke Janssen, Mathias Fasshauer, Konstanze Miehle, Arno Villringer, Michael Stumvoll, Karsten Mueller
Summary: Using functional MRI, the study investigated the effects of metreleptin on the reward system in a non-eating behavior reward task. The results showed that patients with lipodystrophy treated with metreleptin experienced a decrease in reward-related brain activity, suggesting that leptin has functions in the human reward system that are unrelated to eating behavior.
JOURNAL OF THE ENDOCRINE SOCIETY
(2023)
Article
Clinical Neurology
Karsten Mueller, Friederike Thiel, Birol Taskin, Frank Beutner, Andrej Teren, Vladimir K. Dubovoy, Harald E. Moeller, Arno Villringer, Matthias L. Schroeter
Summary: The study aimed to detect the functional correlates of heart failure in terms of alterations in functional brain connectivity related to cognitive performance. The results show that heart failure is associated with reduced functional connectivity between the precuneus and widely distributed brain regions, and decline in cognitive performance is specifically correlated with diminished functional brain connectivity in patients with heart failure.
BRAIN COMMUNICATIONS
(2023)
Article
Gastroenterology & Hepatology
Evelyn Medawar, Frauke Beyer, Ronja Thieleking, Sven-Bastiaan Haange, Ulrike Rolle-Kampczyk, Madlen Reinicke, Rima Chakaroun, Martin von Bergen, Michael Stumvoll, Arno Villringer, A. Veronica Witte
Summary: This study investigated the effects of high-dosed prebiotic fiber on reward-related food decision-making in overweight young adults. The results showed that prebiotic intake decreased brain activation towards high-caloric food stimuli and caused shifts in gut microbiota.
Article
Neurosciences
Julia Huck, Anna-Thekla Jaeger, Uta Schneider, Sophia Grahl, Audrey P. Fan, Christine Tardif, Arno Villringer, Pierre-Louis Bazin, Christopher J. Steele, Claudine J. Gauthier
Summary: Resting-state functional magnetic resonance imaging (rs-fMRI) is used to detect low-frequency fluctuations in the BOLD signal across brain regions. Venous biases can affect the amplitude and location of the BOLD signal, as well as connectivity measures derived from rs-fMRI. This study investigated the impact of vein diameter and distance on various rs-fMRI measures in the grey matter. It was found that smaller veins had higher values across all distances, while values associated with larger veins decreased with increasing distance. Models were proposed to correct for this venous bias in rs-fMRI metrics.
HUMAN BRAIN MAPPING
(2023)
Article
Psychology, Biological
Felix Klotzsche, Michael Gaebler, Arno Villringer, Werner Sommer, Vadim Nikulin, Sven Ohl
Summary: Virtual reality (VR) is a powerful tool for studying cognitive processes, allowing researchers to observe behaviors and mental states in complex and controlled scenarios. This study used a VR headset to investigate the spatial limitations of two well-known EEG markers in visual short-term memory. The results showed that the amplitude of the contralateral delay activity (CDA) differed between high and low memory load at smaller eccentricities, but not at the largest eccentricity. Memory load and eccentricity had no significant effect on lateralized alpha power. The study concluded that commercial VR hardware can be used to study these EEG markers of visual memory, with some limitations.
Article
Multidisciplinary Sciences
Daniel S. Kluger, Carina Forster, Omid Abbasi, Nikos Chalas, Arno Villringer, Joachim Gross
Summary: Bodily rhythms such as respiration modulate neural oscillations underlying human action, perception, and cognition. The link between respiration and aperiodic brain activity has been unstudied, but this study shows that fluctuations of aperiodic brain activity are synchronized with the respiratory cycle. These findings highlight the role of respiration as a physiological influence on brain signaling.
NATURE COMMUNICATIONS
(2023)
Article
Food Science & Technology
Evelyn Medawar, Marie Zedler, Larissa de Biasi, Arno Villringer, A. Veronica Witte
Summary: Adopting plant-based diets high in fiber may reduce global warming and obesity prevalence, but the physiological and psychological determinants of plant-based food intake remain unclear.
NPJ SCIENCE OF FOOD
(2023)
Article
Neurosciences
Jose Sanchez-Bornot, Roberto C. Sotero, J. A. Scott Kelso, Ozguer Simsek, Damien Coyle
Summary: This study proposes a multi-penalized state-space model for analyzing unobserved dynamics, using a data-driven regularization method. Novel algorithms are developed to solve the model, and a cross-validation method is introduced to evaluate regularization parameters. The effectiveness of this method is validated through simulations and real data analysis, enabling a more accurate exploration of cognitive brain functions.
