A5064415146- Neural dynamics and brain function
- EEG and Brain-Computer Interfaces
- Functional Brain Connectivity Studies
- Neural and Behavioral Psychology Studies
- Advanced MRI Techniques and Applications
- Neuroscience and Neural Engineering
- Visual perception and processing mechanisms
- Neurological disorders and treatments
- Muscle activation and electromyography studies
- Blind Source Separation Techniques
- Atomic and Subatomic Physics Research
- Heart Rate Variability and Autonomic Control
- Action Observation and Synchronization
- Neuroscience and Music Perception
- Multisensory perception and integration
- Neurobiology of Language and Bilingualism
- Advanced Neuroimaging Techniques and Applications
- Motor Control and Adaptation
- Health, Environment, Cognitive Aging
- Advanced Memory and Neural Computing
- Scientific Computing and Data Management
- Neural Networks and Applications
- Optical Imaging and Spectroscopy Techniques
- Transcranial Magnetic Stimulation Studies
- Reading and Literacy Development
Radboud University Nijmegen
2016-2025
Karolinska Institutet
2016-2025
Authorised Association Consortium
2023
Universität Hamburg
2023
University Medical Center Hamburg-Eppendorf
2023
University of California, Berkeley
2022
NTL Institute for Applied Behavioral Science
2021
Allen Institute for Brain Science
2013-2021
Institut des Sciences Cognitives Marc Jeannerod
2021
Polytechnique Montréal
2021
This paper describes FieldTrip, an open source software package that we developed for the analysis of MEG, EEG, and other electrophysiological data. The is implemented as a MATLAB toolbox includes complete set consistent user-friendly high-level functions allow experimental neuroscientists to analyze It algorithms simple advanced analysis, such time-frequency using multitapers, reconstruction dipoles, distributed sources beamformers, connectivity nonparametric statistical permutation tests...
Brain processing depends on the interactions between neuronal groups. Those are governed by pattern of anatomical connections and yet unknown mechanisms that modulate effective strength a given connection. We found mutual influence among groups phase relation rhythmic activities within Phase relations supporting preceded those few milliseconds, consistent with mechanistic role. These effects were specific in time, frequency, space, we therefore propose synchronization flexibly determines...
Although the resting and baseline states of human electroencephalogram magnetoencephalogram (MEG) are dominated by oscillations in alpha band (∼10 Hz), functional role these remains unclear. In this study we used MEG to investigate how spontaneous humans presented before visual stimuli modulate perception. Subjects had report if there was a subtle difference gray levels between two superimposed discs. We then compared prestimulus brain activity for correctly (hits) versus incorrectly...
Independent component analysis (ICA) and blind source separation (BSS) methods are increasingly used to separate individual brain non-brain signals mixed by volume conduction in electroencephalographic (EEG) other electrophysiological recordings. We compared results of decomposing thirteen 71-channel human scalp EEG datasets 22 ICA BSS algorithms, assessing the pairwise mutual information (PMI) channel pairs, remaining PMI overall reduction (MIR) effected each decomposition, decomposition...
Magnetoencephalographic (MEG) recordings are a rich source of information about the neural dynamics underlying cognitive processes in brain, with excellent temporal and good spatial resolution. In recent years there have been considerable advances MEG hardware developments methods. Sophisticated analysis techniques now routinely applied continuously improved, leading to fascinating insights into intricate processes. However, rapidly increasing level complexity different steps study make it...
Although studies in animals and patients have demonstrated that brain oscillations play a role declarative memory encoding retrieval, little has been done to investigate the temporal dynamics sources of activity healthy human subjects performing such tasks. In magnetoencephalography study using pictorial stimuli, we now identified oscillatory gamma (60–90 Hz) theta (4.5–8.5 band during operations participants. Both was stronger for later remembered compared with forgotten items (the...
Acute stress shifts the brain into a state that fosters rapid defense mechanisms. Stress-related neuromodulators are thought to trigger this change by altering properties of large-scale neural populations throughout brain. We investigated brain-state shift in humans. During exposure fear-related acute stressor, responsiveness and interconnectivity within network including cortical (frontoinsular, dorsal anterior cingulate, inferotemporal, temporoparietal) subcortical (amygdala, thalamus,...
SPM is a free and open source software written in MATLAB (The MathWorks, Inc.). In addition to standard M/EEG preprocessing, we presently offer three main analysis tools: (i) statistical of scalp-maps, time-frequency images, volumetric 3D reconstruction images based on the general linear model, with correction for multiple comparisons using random field theory; (ii) Bayesian reconstruction, including support group studies, simultaneous EEG MEG, fMRI priors; (iii) dynamic causal modelling...
Neuronal groups can interact with each other even if they are widely separated. One group might modulate its firing rate or internal oscillatory synchronization to influence another group. We propose that coherence between two neuronal is a mechanism of efficient interaction, because it renders mutual input optimally timed and thereby maximally effective. Modulations subjects' readiness respond in simple reaction-time task were closely correlated the strength gamma-band (40 70 hertz) motor...
Selective attention lends relevant sensory input priority access to higher-level brain areas and ultimately behavior. Recent studies have suggested that those neurons in visual are activated by an attended stimulus engage enhanced gamma-band (30–70 Hz) synchronization compared with a distracter. Such precise could enhance the postsynaptic impact of cells carrying behaviorally information. Previous used local field potential (LFP) power spectrum or spike-LFP coherence (SFC) indirectly...
We investigated the effects of spatial-selective attention on oscillatory neuronal dynamics in a tactile delayed-match-to-sample task. Whole-head magnetoencephalography was recorded healthy subjects while dot patterns were presented to their index fingers using Braille stimulators. The subjects' task report reoccurrence an initially sample pattern series up eight test stimuli that unpredictably right or left finger. Attention cued one side (finger) at beginning each trial, and performed...
Both phenotype and treatment response vary in patients with Parkinson's disease. Anatomical functional imaging studies suggest that individual symptoms may represent malfunction of different segregated networks running parallel through the basal ganglia. In this study, we use a newly described, electrophysiological method to describe cortico-subthalamic humans. We performed combined magnetoencephalographic subthalamic local field potential recordings thirteen disease at rest. Two spatially...
We present a micromachined 252-channel ECoG (electrocorticogram)-electrode array, which is made of thin polyimide foil substrate enclosing sputtered platinum electrode sites and conductor paths. The array subtends an area approximately 35 mm by 60 designed to cover large parts hemisphere macaque monkey's cortex. Eight omnetics connectors are directly soldered the foil. This leads compact assembly size enables chronic implantation allows free movements animal between recording sessions. 1 in...