Global sensitivity of EEG source analysis to tissue conductivity uncertainties
In this study, we investigate the sensitivity of EEG forward and inverse solutions to tissue conductivity uncertainties for sources distributed over the whole cortex surface.MethodsWe employ a detailed five-compartment head model distinguishing skin, skull, cerebrospinal fluid, gray matter, and white matter, where we consider uncertainties of skin, skull, gray matter, and white matter conductivities. We use the finite element method (FEM) to calculate EEG forward solutions and goal function scans (GFS) as inverse approach. To be able to generate the large number of EEG forward solutions, we employ generalized polynomial ch...
Source: Frontiers in Human Neuroscience - March 12, 2024 Category: Neuroscience Source Type: research
Theater practice and interpersonal synchronization behaviors: a pilot study comparing actors and non-actors
This study aims to investigate whether acting practice enhances someone’s abilities to set up an effective relationship with others and allows the individual to better manage not only the relationship itself, but also her/his own feelings and those of her/his partner. Eighty two healthy Italian adults, with no communication disorders, including 43 actors (Mage = 25.4; S.D. = 3.64) and 39 non-actors (Mage = 24.1 = S.D. = 4.17) completed a joint verbal production task named Random Sequence Generation (RSG) task. Initially, participants performed the task individually. Subsequently, in a second phase, th...
Source: Frontiers in Human Neuroscience - March 11, 2024 Category: Neuroscience Source Type: research
Case report: accelerated cathodal HD-tDCS over the right dorsolateral prefrontal cortex in hoarding disorder
Hoarding disorder is an under-recognized condition characterized by the excessive acquisition of possessions and difficulty in disposing of them, which can have dramatic consequences. As hoarding disorder is difficult to treat and associated with high levels of disability in all areas of functioning, there appears to be a critical need to develop novel, tailored therapeutic strategies. Non-invasive brain stimulation techniques hold promise as potential therapeutic interventions for various psychiatric conditions and as a tool to modulate impulsivity when applied over the dorsolateral prefrontal cortex (DLPFC). Therefore, w...
Source: Frontiers in Human Neuroscience - March 11, 2024 Category: Neuroscience Source Type: research
Editorial: New challenges and future perspectives in cognitive neuroscience
(Source: Frontiers in Human Neuroscience)
Source: Frontiers in Human Neuroscience - March 8, 2024 Category: Neuroscience Source Type: research
Coherent activity within and between hemispheres: cortico-cortical connectivity revealed by rTMS of the right posterior parietal cortex
IntroductionLow frequency (1 Hz) repetitive transcranial stimulation (rTMS) applied over right posterior parietal cortex (rPPC) has been shown to reduce cortical excitability both of the stimulated area and of the interconnected contralateral homologous areas. In the present study, we investigated the whole pattern of intra- and inter-hemispheric cortico-cortical connectivity changes induced by rTMS over rPPC.MethodsTo do so, 14 healthy participants underwent resting state EEG recording before and after 30 min of rTMS at 1 Hz or sham stimulation over the rPPC (electrode position P6). Real stimulation was applied at 90% of ...
Source: Frontiers in Human Neuroscience - March 7, 2024 Category: Neuroscience Source Type: research
The effects of football juggling learning on executive function and brain functional connectivity
This study aimed to explore the relationship between motor skill learning and executive function (EF), with an emphasis on the potential effects of football juggling learning. A randomized controlled trial involving 111 participants aged 17–19 years was conducted. Participants were randomly assigned to either the football juggling learning (FJL) group or a control group. The FJL group underwent 70 sessions of football juggling learning, while the control group engaged in their normal daily activities without any exercise intervention during the same time frame. Both groups were assessed for EF performance and underwent f...
Source: Frontiers in Human Neuroscience - March 7, 2024 Category: Neuroscience Source Type: research
Editorial: Women in brain health and clinical neuroscience
(Source: Frontiers in Human Neuroscience)
Source: Frontiers in Human Neuroscience - March 6, 2024 Category: Neuroscience Source Type: research
A scientometric review of the growing trends in transcranial alternating current stimulation (tACS)
ConclusionThe findings reveal the development prospects and future directions of tACS and provide valuable references for researchers in the field. In recent years, the keywords “gamma,” “transcranial direct current simulation,” and “Alzheimer’s disease” that have erupted, as well as many references cited in the outbreak, have provided certain clues for the mining of research prefaces. This will act as a guide for future researchers in determining the path of tACS research. (Source: Frontiers in Human Neuroscience)
Source: Frontiers in Human Neuroscience - March 6, 2024 Category: Neuroscience Source Type: research
Resting-state functional MRI study of conventional MRI-negative intractable epilepsy in children
ConclusionITE patients demonstrated changed FCS values in the temporal and prefrontal cortices relative to nITE patients, which may be related to drug resistance in epilepsy. FCS in the left caudate nucleus associated with VIQ, suggesting the caudate may become a key target for improving cognitive impairment and seizures in children with ITE. (Source: Frontiers in Human Neuroscience)
Source: Frontiers in Human Neuroscience - March 6, 2024 Category: Neuroscience Source Type: research
Editorial: Sensory control of posture and gait: integration and mechanisms to maintain balance during different sensory conditions
(Source: Frontiers in Human Neuroscience)
Source: Frontiers in Human Neuroscience - March 5, 2024 Category: Neuroscience Source Type: research
EEG-based finger movement classification with intrinsic time-scale decomposition
This study aims to propose a more realistic system to decode the movements of five fingers and the no mental task (NoMT) case from EEG signals.MethodsIn this study, a novel praxis for feature extraction is utilized. Using Proper Rotational Components (PRCs) computed through Intrinsic Time Scale Decomposition (ITD), which has been successfully applied in different biomedical signals recently, features for classification are extracted. Subsequently, these features were applied to the inputs of well-known classifiers and their different implementations to discriminate between these six classes. The highest classifier performa...
Source: Frontiers in Human Neuroscience - March 5, 2024 Category: Neuroscience Source Type: research
A toolbox for decoding BCI commands based on event-related potentials
Commands in brain-computer interface (BCI) applications often rely on the decoding of event-related potentials (ERP). For instance, the P300 potential is frequently used as a marker of attention to an oddball event. Error-related potentials and the N2pc signal are further examples of ERPs used for BCI control. One challenge in decoding brain activity from the electroencephalogram (EEG) is the selection of the most suitable channels and appropriate features for a particular classification approach. Here we introduce a toolbox that enables ERP-based decoding using the full set of channels, while automatically extracting info...
Source: Frontiers in Human Neuroscience - March 4, 2024 Category: Neuroscience Source Type: research
Effective connectivity of working memory performance: a DCM study of MEG data
Visual working memory (WM) engages several nodes of a large-scale network that includes frontal, parietal, and visual regions; however, little is understood about how these regions interact to support WM behavior. In particular, it is unclear whether network dynamics during WM maintenance primarily represent feedforward or feedback connections. This question has important implications for current debates about the relative roles of frontoparietal and visual regions in WM maintenance. In the current study, we investigated the network activity supporting WM using MEG data acquired while healthy subjects performed a multi-ite...
Source: Frontiers in Human Neuroscience - March 4, 2024 Category: Neuroscience Source Type: research
Editorial: Electromagnetic field theories of consciousness: opportunities and obstacles
(Source: Frontiers in Human Neuroscience)
Source: Frontiers in Human Neuroscience - March 1, 2024 Category: Neuroscience Source Type: research
Lattice layout and optimizer effect analysis for generating optimal transcranial electrical stimulation (tES) montages through the metaheuristic L1L1 method
This study focuses on broadening the applicability of the metaheuristic L1-norm fitted and penalized (L1L1) optimization method in finding a current pattern for multichannel transcranial electrical stimulation (tES). The metaheuristic L1L1 optimization framework defines the tES montage via linear programming by maximizing or minimizing an objective function with respect to a pair of hyperparameters.MethodsIn this study, we explore the computational performance and reliability of different optimization packages, algorithms, and search methods in combination with the L1L1 method. The solvers from Matlab R2020b, MOSEK 9.0, Gu...
Source: Frontiers in Human Neuroscience - February 29, 2024 Category: Neuroscience Source Type: research
