Abstract：
:EEG is known to contain considerable inter-trial and inter-subject variability, which poses a challenge in any group-level EEG analyses. A true experimental effect must be reproducible even with variabilities in trials, sessions, and subjects. Extracting components that are reproducible across trials and subjects benefits both understanding common mechanisms in neural processing of cognitive functions and building robust brain-computer interfaces. This study extends our previous method (task-related component analysis, TRCA) by maximizing not only trial-by-trial reproducibility within single subjects but also similarity across a group of subjects, hence referred to as group TRCA (gTRCA). The problem of maximizing reproducibility of time series across trials and subjects is formulated as a generalized eigenvalue problem. We applied gTRCA to EEG data recorded from 35 subjects during a steady-state visual-evoked potential (SSVEP) experiment. The results revealed: (1) The group-representative data computed by gTRCA showed higher and consistent spectral peaks than other conventional methods; (2) Scalp maps obtained by gTRCA showed estimated source locations consistently within the occipital lobe; And (3) the high-dimensional features extracted by gTRCA are consistently mapped to a low-dimensional space. We conclude that gTRCA offers a framework for group-level EEG data analysis and brain-computer interfaces alternative in complement to grand averaging.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Tanaka Hdoi
10.1038/s41598-019-56962-2subject
Has Abstractpub_date
2020-01-09 00:00:00pages
84issue
1issn
2045-2322pii
10.1038/s41598-019-56962-2journal_volume
10pub_type
杂志文章abstract：:Recently, a concept of digital metamaterials has been proposed to manipulate field distribution through proper spatial mixtures of digital metamaterial bits. Here, we present a design of 2-bit digitally-controlled coding metasurface that can effectively modulate the scattered electromagnetic wave and realize different...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep42302
更新日期：2017-02-08 00:00:00
abstract：:Low-losses and directionality effects exhibited by High Refractive Index Dielectric particles make them attractive for applications where radiation direction control is relevant. For instance, isolated metallo-dielectric core-shell particles or aggregates (dimers) of High Refractive Index Dielectric particles have bee...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-018-26359-8
更新日期：2018-05-22 00:00:00
abstract：:Understanding the molecular mechanisms underlying Alzheimer's disease (AD) is necessary for the diagnosis and treatment of this neurodegenerative disorder. It is therefore important to detect the most important genes and miRNAs, which are associated with molecular events, and studying their interactions for recognitio...
journal_title：Scientific reports
pub_type： 杂志文章,meta分析
doi：10.1038/s41598-018-20959-0
更新日期：2018-03-19 00:00:00
abstract：:Graphene plasmonics has become a highlighted research area due to the outstanding properties of deep-subwavelength plasmon excitation, long relaxation time, and electro-optical tunability. Although the giant conductivity of a graphene layer enables the low-dimensional confinement of light, the atomic scale of the laye...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep43333
更新日期：2017-02-27 00:00:00
abstract：:The presence of non-poplar extracts, cutin, and wax layer in the wheat straw outer surface (WOS) greatly limit its application in bio-composite preparation. In this study, a dielectric-barrier-discharge plasma using water vapor as feeding gas was used to fast modify the WOS. The morphology, free radical concentrations...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-018-20285-5
更新日期：2018-02-02 00:00:00
abstract：:Limited continuous replenishment of the mineralization medium is a restriction for in-situ solution-based remineralization of hypomineralized body tissues. Here, we report a process that generated amine-functionalized mesoporous silica nanoparticles for sustained release of biomimetic analog-stabilized amorphous calci...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep11199
更新日期：2015-06-08 00:00:00
abstract：:With new degrees of freedom to achieve full control of the optical wavefront, metasurfaces could overcome the fabrication embarrassment faced by the metamaterials. In this paper, a broadband hologram using metasurface consisting of elongated nanoapertures array with different orientations has been experimentally demon...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep19856
更新日期：2016-01-28 00:00:00
abstract：:Formation-free multi-level resistive switching characteristics by using 10 nm-thick polycrystalline GeOx film in a simple W/GeOx/W structure and understanding of switching mechanism through redox reaction in H2O2/sarcosine sensing (or changing Ge°/Ge4+ oxidation states under external bias) have been reported for the f...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-017-11657-4
更新日期：2017-09-11 00:00:00
abstract：:Delivering and expressing a gene of interest in cells or living animals has become a pivotal technique in biomedical research and gene therapy. Among viral delivery systems, adeno-associated viruses (AAVs) are relatively safe and demonstrate high gene transfer efficiency, low immunogenicity, stable long-term expressio...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-019-49624-w
更新日期：2019-09-19 00:00:00
abstract：:Measurements of volcanic tephra fallout deposits provide useful information about the magnitude and intensity of explosive volcanic eruptions and potential for remobilization of deposits as dangerous volcanic flows. However, gathering information in the vicinity of erupting craters is extremely dangerous, and moreover...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-020-71902-1
更新日期：2020-09-09 00:00:00
abstract：:Humans walk and run, as well as change their gait speed, through the control of their complicated and redundant musculoskeletal system. These gaits exhibit different locomotor behaviors, such as a double-stance phase in walking and flight phase in running. The complex and redundant nature of the musculoskeletal system...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-018-37460-3
更新日期：2019-01-23 00:00:00
abstract：:For isotropic fluids, classical nucleation theory predicts the nucleation rate, barrier height and critical droplet size by ac- counting for the competition between bulk energy and interfacial tension. The nucleation process in liquid crystals is less understood. We numerically investigate nucleation in monolayered ne...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep40059
更新日期：2017-01-05 00:00:00
abstract：:The recent emergence of highly virulent human adenoviruses (HAdVs) with new tissue tropisms underscores the need to determine their ontogeny. Here we report complete high quality genome sequences and analyses for all the previously unsequenced HAdV serotypes (n = 20) within HAdV species D. Analysis of nucleotide seque...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep01812
更新日期：2013-01-01 00:00:00
abstract：:New plant protection strategies focus on minimizing chemical pesticide use and increasing their compatibility with biological control agents. The objective was to evaluate the side-effects of glyphosate, diflubenzuron, malathion, tebuconazole and triflumuron (at 720, 45, 400, 150 and 20 g ai ha-1, respectively), pesti...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-017-10462-3
更新日期：2017-08-30 00:00:00
abstract：:Neuropathic pain is characterized by an uncertain etiology and by a poor response to common therapies. The ineffectiveness and the frequent side effects of the drugs used to counteract neuropathic pain call for the discovery of new therapeutic strategies. Laser therapy proved to be effective for reducing pain sensitiv...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-019-45469-5
更新日期：2019-06-26 00:00:00
abstract：:Optical antennas can be used to manipulate the direction and polarization of radiation from an emitter. Usually, these metallic nanostructures utilize localized plasmon resonances to generate highly directional and strongly polarized emission, which is determined predominantly by the antenna geometry alone, and is thu...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep06456
更新日期：2014-09-24 00:00:00
abstract：:Vibrio vulnificus causes fatal infections in humans, and antibiotics are commonly used in treatment regimens against V. vulnificus infection. However, the therapeutic effects of antibiotics are limited by multidrug resistance. In this study, we demonstrated that an antimicrobial peptide (AMP), HPA3PHis, loaded onto a ...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-017-14127-z
更新日期：2017-10-19 00:00:00
abstract：:Magnetic carboxyl functional nanoporous polymer (MCFNP) was chemically fabricated by incorporation of magnetic Fe3O4 precursor into the carboxyl functional nanoporous polymer (CFNP). The as-synthesized MCFNP was characterized and used as an adsorbent for rapid adsorption removal of methylene blue (MB) from wastewater....
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-018-24873-3
更新日期：2018-04-25 00:00:00
abstract：:An amendment to this paper has been published and can be accessed via a link at the top of the paper. ...
journal_title：Scientific reports
pub_type： 已发布勘误
doi：10.1038/s41598-020-60956-w
更新日期：2020-02-26 00:00:00
abstract：:Because of the scanty pipeline of antibiotics newly obtained from nature, chemical modification of established drugs is one of the major streams of current antibacterial research. Intuitive and easy-to-use assays are critical for identifying drug candidates with novel modes of action. In this study, we demonstrated th...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-017-01267-5
更新日期：2017-04-25 00:00:00
abstract：:The systematics of Oriental freshwater mussels (Bivalvia: Unionidae) is poorly known. Here, we present an integrative revision of the genus Trapezoideus Simpson, 1900 to further understanding of freshwater mussel diversity in the region. We demonstrate that Trapezoideus as currently circumscribed is non-monophyletic, ...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-019-39365-1
更新日期：2019-03-11 00:00:00
abstract：:Maintaining balance while walking on a narrow beam is a challenging motor task. One important factor is that the foot's ability to exert torque on the support surface is limited by the beam width. Still, the feet serve as a critical interface between the body and the external environment, and it is unclear how the mec...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-020-64035-y
更新日期：2020-05-06 00:00:00
abstract：:A better understanding of the mechanisms of action of human adjuvants could inform a rational development of next generation vaccines for human use. Here, we exploited a genome wide transcriptomics analysis combined with a systems biology approach to determine the molecular signatures induced by four clinically tested...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep39097
更新日期：2016-12-13 00:00:00
abstract：:Lung cancer is the leading cause of death among all malignancies due to rapid tumor progression and relapse; however, the underlying molecular mechanisms of tumor progression are unclear. In the present study, we identified ANKRD22 as a novel tumor-associated gene in non-small cell lung cancer (NSCLC). According to th...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-017-04818-y
更新日期：2017-06-30 00:00:00
abstract：:We study the spreading of cell aggregates deposited on adhesive substrates decorated with microparticles (MPs). A cell monolayer expands around the aggregate. The cells on the periphery of the monolayer take up the MPs, clearing the substrate as they progress and forming an aureole of cells filled with MPs. We study t...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-017-15665-2
更新日期：2017-11-16 00:00:00
abstract：:An amendment to this paper has been published and can be accessed via a link at the top of the paper. ...
journal_title：Scientific reports
pub_type： 已发布勘误
doi：10.1038/s41598-020-57947-2
更新日期：2020-01-30 00:00:00
abstract：:Here we report a compact multilayer film structure for angle robust color filtering, which is verified by theoretical calculations and experiment results. The introduction of the amorphous silicon in the proposed unsymmetrical resonant cavity greatly reduces the angular sensitivity of the filters, which is confirmed b...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep09285
更新日期：2015-03-19 00:00:00
abstract：:The extraction and encoding of acoustical temporal regularities are fundamental for human cognitive auditory abilities such as speech or beat entrainment. Because the comparison of the neural sensitivity to temporal regularities between human and animals is fundamental to relate non-invasive measures of auditory proce...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-017-16774-8
更新日期：2017-11-30 00:00:00
abstract：:Plant litter represents a major basal resource in streams, where its decomposition is partly regulated by litter traits. Litter-trait variation may determine the latitudinal gradient in decomposition in streams, which is mainly microbial in the tropics and detritivore-mediated at high latitudes. However, this hypothes...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-017-10640-3
更新日期：2017-09-05 00:00:00
abstract：:Small amphipods (Halice sp. MT-2017) with body length <1 cm were collected from the Challenger Deep (~10,920 m below sea level). The divergence time of their lineage was approximately 109 Mya, making this group ancient compared to others under study. The mitochondrial genome of Halice sp. shared the usual gene compone...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-019-38735-z
更新日期：2019-02-22 00:00:00
