Current State of EEG/ERP Microstate Research
Brain Topogr. 2024 Feb 13. doi: 10.1007/s10548-024-01037-3. Online ahead of print.ABSTRACTThe analysis of EEG microstates for investigating rapid whole-brain network dynamics during rest and tasks has become a standard practice in the EEG research community, leading to a substantial increase in publications across various affective, cognitive, social and clinical neuroscience domains. Recognizing the growing significance of this analytical method, the authors aim to provide the microstate research community with a comprehensive discussion on methodological standards, unresolved questions, and the functional relevance of EE...
Source: Brain Topography - February 13, 2024 Category: Neuroscience Authors: Christoph M Michel Lucie Brechet Bastian Schiller Thomas Koenig Source Type: research
Current State of EEG/ERP Microstate Research
Brain Topogr. 2024 Feb 13. doi: 10.1007/s10548-024-01037-3. Online ahead of print.ABSTRACTThe analysis of EEG microstates for investigating rapid whole-brain network dynamics during rest and tasks has become a standard practice in the EEG research community, leading to a substantial increase in publications across various affective, cognitive, social and clinical neuroscience domains. Recognizing the growing significance of this analytical method, the authors aim to provide the microstate research community with a comprehensive discussion on methodological standards, unresolved questions, and the functional relevance of EE...
Source: Brain Topography - February 13, 2024 Category: Neuroscience Authors: Christoph M Michel Lucie Brechet Bastian Schiller Thomas Koenig Source Type: research
Functional Abnormality of the Reward System in Depressed Adolescents and Young Adults with and without Suicidal Behavior
CONCLUSION: Local and functional connectivity abnormalities in the reward network were found in the MDD groups. However, increased functional connectivity was found in only the sMDD group.PMID:38319504 | DOI:10.1007/s10548-024-01036-4 (Source: Brain Topography)
Source: Brain Topography - February 6, 2024 Category: Neuroscience Authors: Haitang Qiu Jun Cao Rui Wang Xinke Li Li Kuang Zhubin Ouyang Source Type: research
Cortical Correlates of Visuospatial Switching Processes Between Egocentric and Allocentric Frames of Reference: A fNIRS Study
Brain Topogr. 2024 Feb 5. doi: 10.1007/s10548-023-01032-0. Online ahead of print.ABSTRACTHuman beings represent spatial information according to egocentric (body-to-object) and allocentric (object-to-object) frames of reference. In everyday life, we constantly switch from one frame of reference to another in order to react effectively to the specific needs of the environment and task demands. However, to the best of our knowledge, no study to date has investigated the cortical activity of switching and non-switching processes between egocentric and allocentric spatial encodings. To this aim, a custom-designed visuo-spatial...
Source: Brain Topography - February 5, 2024 Category: Neuroscience Authors: Renato Orti Yann Coello Francesco Ruotolo Marion Vincent Angela Bartolo Tina Iachini Gennaro Ruggiero Source Type: research
Disruption of Resting-State Functional Connectivity in Acute Ischemic Stroke: Comparisons Between Right and Left Hemispheric Insults
Brain Topogr. 2024 Feb 1. doi: 10.1007/s10548-024-01033-7. Online ahead of print.ABSTRACTFew resting-state functional magnetic resonance imaging (RS-fMRI) studies evaluated the impact of acute ischemic changes on cerebral functional connectivity (FC) and its relationship with functional outcomes after acute ischemic stroke (AIS), considering the side of lesions. To characterize alterations of FC of patients with AIS by analyzing 12 large-scale brain networks (NWs) with RS-fMRI. Additionally, we evaluated the impact of the side (right (RH) or left (LH) hemisphere) of insult on the disruption of brain NWs. 38 patients diagno...
Source: Brain Topography - February 1, 2024 Category: Neuroscience Authors: Marilise Katsurayama Lucas Sc árdua Silva Brunno Machado de Campos Wagner Mauad Avelar Fernando Cendes Clarissa Lin Yasuda Source Type: research
Decoding Single and Paired Phonemes Using 7T Functional MRI
Brain Topogr. 2024 Jan 23. doi: 10.1007/s10548-024-01034-6. Online ahead of print.ABSTRACTSeveral studies have shown that mouth movements related to the pronunciation of individual phonemes are represented in the sensorimotor cortex. This would theoretically allow for brain computer interfaces that are capable of decoding continuous speech by training classifiers based on the activity in the sensorimotor cortex related to the production of individual phonemes. To address this, we investigated the decodability of trials with individual and paired phonemes (pronounced consecutively with one second interval) using activity in...
Source: Brain Topography - January 23, 2024 Category: Neuroscience Authors: Maria Ara újo Vitória Francisco Guerreiro Fernandes Max van den Boom Nick Ramsey Mathijs Raemaekers Source Type: research
Impact of Chronic Pain on Use-Dependent Plasticity: Corticomotor Excitability and Motor Representation in Musicians With and Without Pain
This study investigated the interaction between adaptive and maladaptive plasticity in the motor pathways, in particular how chronic pain influences long-term use-dependent plasticity. Using transcranial magnetic stimulation (TMS), corticospinal excitability was assessed by measuring the amplitude of the motor-evoked potential (MEP), area of the motor map, volume, and center of gravity of the first dorsal interosseous muscle in 19 pain-free musicians, 17 upper limb/neck pain chronic pain musicians, and 19 pain-free non-musicians as controls. Motor map volume and MEP amplitude were smaller for both pain-free and chronic pai...
Source: Brain Topography - January 18, 2024 Category: Neuroscience Authors: Anna M Zamorano Enrico De Martino Ainhoa Insausti-Delgado Peter Vuust Herta Flor Thomas Graven-Nielsen Source Type: research
Propofol Reversibly Attenuates Short-Range Microstate Ordering and 20 Hz Microstate Oscillations
In this study, we investigate how the anesthetic propofol affects microstate sequence periodicity and predictability, and how these metrics are changed by interpolation. We performed two frequency analyses on microstate sequences, one based on time-lagged mutual information, the other based on Fourier transform methodology, and quantified the effects of interpolation. Resting-state microstate sequences had a 20 Hz frequency peak related to dominant 10 Hz (alpha) rhythms, and the Fourier approach demonstrated that all five microstate classes followed this frequency. The 20 Hz periodicity was reversibly attenuated under mode...
Source: Brain Topography - January 16, 2024 Category: Neuroscience Authors: Gesine Hermann Inken T ödt Enzo Tagliazucchi Inga Karin Todtenhaupt Helmut Laufs Frederic von Wegner Source Type: research
Disrupting the Dorsolateral Prefrontal Cortex Attenuates the Difference in Decision-Making for Altruistic Punishment Between the Gain and Loss Contexts
Brain Topogr. 2024 Jan 10. doi: 10.1007/s10548-023-01029-9. Online ahead of print.ABSTRACTAltruistic punishment is a primary response to social norms violations; its neural mechanism has also attracted extensive research attention. In the present studies, we applied a low-frequency repetitive transcranial magnetic stimulation (rTMS) to the bilateral dorsolateral prefrontal cortex (DLPFC) while participants engaged in a modified Ultimatum Game (Study 1) and third-party punishment game (Study 2) to explore how the bilateral DLPFC disruption affects people's perception of violation of fairness norms and altruistic punishment ...
Source: Brain Topography - January 10, 2024 Category: Neuroscience Authors: Yingjie Liu Hongbo Xing Yuan Gao Xiaohua Bian Xin Fu Baxter DiFabrizio He Wang Source Type: research
Distinct Spectral Profiles of Awake Resting EEG in Disorders of Consciousness: The Role of Frequency and Topography of Oscillations
In this study we used a robust method of resting-state EEG power spectrum parameter extraction to identify distinct spectral properties for different types of PDOC. Sixty patients and 37 healthy volunteers participated in this study. Patient group consisted of 22 unresponsive wakefulness patients, 25 minimally conscious patients and 13 patients emerging from the minimally conscious state. Ten minutes of resting EEG was acquired during wakefulness and transformed into individual power spectra. For each patient, using the spectral decomposition algorithm, we extracted maximum peak frequency within 1-14 Hz range in the centro...
Source: Brain Topography - December 29, 2023 Category: Neuroscience Authors: Dominika Dr ążyk Karol Przewrocki Urszula G órska-Klimowska Marek Binder Source Type: research
Distinct Spectral Profiles of Awake Resting EEG in Disorders of Consciousness: The Role of Frequency and Topography of Oscillations
In this study we used a robust method of resting-state EEG power spectrum parameter extraction to identify distinct spectral properties for different types of PDOC. Sixty patients and 37 healthy volunteers participated in this study. Patient group consisted of 22 unresponsive wakefulness patients, 25 minimally conscious patients and 13 patients emerging from the minimally conscious state. Ten minutes of resting EEG was acquired during wakefulness and transformed into individual power spectra. For each patient, using the spectral decomposition algorithm, we extracted maximum peak frequency within 1-14 Hz range in the centro...
Source: Brain Topography - December 29, 2023 Category: Neuroscience Authors: Dominika Dr ążyk Karol Przewrocki Urszula G órska-Klimowska Marek Binder Source Type: research
Distinct Spectral Profiles of Awake Resting EEG in Disorders of Consciousness: The Role of Frequency and Topography of Oscillations
In this study we used a robust method of resting-state EEG power spectrum parameter extraction to identify distinct spectral properties for different types of PDOC. Sixty patients and 37 healthy volunteers participated in this study. Patient group consisted of 22 unresponsive wakefulness patients, 25 minimally conscious patients and 13 patients emerging from the minimally conscious state. Ten minutes of resting EEG was acquired during wakefulness and transformed into individual power spectra. For each patient, using the spectral decomposition algorithm, we extracted maximum peak frequency within 1-14 Hz range in the centro...
Source: Brain Topography - December 29, 2023 Category: Neuroscience Authors: Dominika Dr ążyk Karol Przewrocki Urszula G órska-Klimowska Marek Binder Source Type: research
Distinct Spectral Profiles of Awake Resting EEG in Disorders of Consciousness: The Role of Frequency and Topography of Oscillations
In this study we used a robust method of resting-state EEG power spectrum parameter extraction to identify distinct spectral properties for different types of PDOC. Sixty patients and 37 healthy volunteers participated in this study. Patient group consisted of 22 unresponsive wakefulness patients, 25 minimally conscious patients and 13 patients emerging from the minimally conscious state. Ten minutes of resting EEG was acquired during wakefulness and transformed into individual power spectra. For each patient, using the spectral decomposition algorithm, we extracted maximum peak frequency within 1-14 Hz range in the centro...
Source: Brain Topography - December 29, 2023 Category: Neuroscience Authors: Dominika Dr ążyk Karol Przewrocki Urszula G órska-Klimowska Marek Binder Source Type: research
Distinct Spectral Profiles of Awake Resting EEG in Disorders of Consciousness: The Role of Frequency and Topography of Oscillations
In this study we used a robust method of resting-state EEG power spectrum parameter extraction to identify distinct spectral properties for different types of PDOC. Sixty patients and 37 healthy volunteers participated in this study. Patient group consisted of 22 unresponsive wakefulness patients, 25 minimally conscious patients and 13 patients emerging from the minimally conscious state. Ten minutes of resting EEG was acquired during wakefulness and transformed into individual power spectra. For each patient, using the spectral decomposition algorithm, we extracted maximum peak frequency within 1-14 Hz range in the centro...
Source: Brain Topography - December 29, 2023 Category: Neuroscience Authors: Dominika Dr ążyk Karol Przewrocki Urszula G órska-Klimowska Marek Binder Source Type: research
Distinct Spectral Profiles of Awake Resting EEG in Disorders of Consciousness: The Role of Frequency and Topography of Oscillations
In this study we used a robust method of resting-state EEG power spectrum parameter extraction to identify distinct spectral properties for different types of PDOC. Sixty patients and 37 healthy volunteers participated in this study. Patient group consisted of 22 unresponsive wakefulness patients, 25 minimally conscious patients and 13 patients emerging from the minimally conscious state. Ten minutes of resting EEG was acquired during wakefulness and transformed into individual power spectra. For each patient, using the spectral decomposition algorithm, we extracted maximum peak frequency within 1-14 Hz range in the centro...
Source: Brain Topography - December 29, 2023 Category: Neuroscience Authors: Dominika Dr ążyk Karol Przewrocki Urszula G órska-Klimowska Marek Binder Source Type: research
