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24 results for “interhemispheric”
Functional Near-Infrared Spectroscopy Reveals Delayed Hemodynamic Changes in the Primary Motor Cortex During Fine Motor Tasks and Decreased Interhemispheric Connectivity in Parkinson's Disease Patients
<p>This dataset contains functional near-infrared spectroscopy (fNIRS) data from 20 patients with Parkinson’s disease and 20 age- and sex-matched healthy subjects without movement disorders. There are 3 folders, each corresponding to a different task: a 10-second finger-tapping task, a 2-minute walking task, and a 6-minute resting-state. When using this dataset, please cite our work:</p> <div> <div>Guevara, E., Rivas-Ruvalcaba, F. J., Kolosovas-Machuca, E. S., Ramírez-Elías, M., Zapata, R. D. de L., Ramirez-GarciaLuna, J. L., & Rodríguez-Leyva, I. (2024). Parkinson’s disease patients show delayed hemodynamic changes in primary motor cortex in fine motor tasks and decreased resting-state interhemispheric functional connectivity: A functional near-infrared spectroscopy study. <em>Neurophotonics</em>, <em>11</em>(2), 025004. <a href="https://doi.org/10.1117/1.NPh.11.2.025004">https://doi.org/10.1117/1.NPh.11.2.025004</a></div> <div> <div> <div>Guevara, E., Solana-Lavalle, G., & Rosas-Romero, R. (2024). Integrating fNIRS and machine learning: Shedding light on Parkinson’s disease detection. <em>EXCLI Journal</em>, <em>23</em>, 763–771. <a href="https://doi.org/10.17179/excli2024-7151">https://doi.org/10.17179/excli2024-7151</a></div> <div> <div> <div> <div> <div>Guevara, E., Kolosovas-Machuca, E. S., & Rodríguez-Leyva, I. (2024). Exploring motor cortex functional connectivity in Parkinson’s disease using fNIRS. <em>Brain Organoid and Systems Neuroscience Journal</em>, <em>2</em>, 23–30. <a href="https://doi.org/10.1016/j.bosn.2024.04.001">https://doi.org/10.1016/j.bosn.2024.04.001</a></div> </div> </div> </div> </div> </div> </div> </div>
Dataset Single-subject EEG measurement of interhemispheric transfer-time for the in-vivo estimation of axonal morphology
<p>This dataset is a subset of the data presented in the article Single‐subject electroencephalography measurement of interhemispheric transfer time for the in‐vivo estimation of axonal morphology Rita Oliveira, Marzia De Lucia, Antoine Lutti</p> <p><a href="https://onlinelibrary.wiley.com/doi/full/10.1002/hbm.26420">https://onlinelibrary.wiley.com/doi/full/10.1002/hbm.26420</a></p> <p><br> For a complete description of our approach for axonal morphology estimation in-vivo, see: <em>Oliveira, R., Pelentritou, A., Di Domenicantonio, G., De Lucia, M., and Lutti, A. (2022). In vivo Estimation of Axonal Morphology From Magnetic Resonance Imaging and Electroencephalography Data. Front. Neurosci. 16, 1–18. doi: 10.3389/fnins.2022.874023.</em></p> <p>This dataset contains the following Matlab files:</p> <ul> <li>CD_CondNameVisualField_LeftBrainOccipital.mat - Current source densities (pA.m) of each brain vertice, EEG trial, and time point for the left brain occipital cortex [#trials x #vertices x #timepoints]</li> <li>CD_CondNameVisualField_RightBrainOccipital.mat - Current source densities (pA.m) of each brain vertice, EEG trial, and time point for the right brain occipital cortex [#trials x #vertices x #timepoints]</li> <li>Stats_Source_CondNameVF_Occipital_LeftBrainOccipital.mat - Result of the cluster permutation for the left brain cortex for the CondNameVF, CondName being Left or Right visual stimulation (Fieldtrip stat structure)</li> <li>Stats_Source_CondNameVF_Occipital_RightBrainOccipital.mat - Result of the cluster permutation for the right brain cortex for the CondNameVF, CondName being Left or - Right visual stimulation (Fieldtrip stat structure)</li> <li>time_vec.mat - Time vector associated with the timecourses [1 x #timepoints]</li> <li>Occipital_vertices.mat - Structure containing the vertices of the brain mesh of the region of interest. Occipital_vertices.Vertices [1 x #vertices]</li> <li>G_ratio_samples.mat - MRI g-ratio sampled along the occipital transcallosal tract [#samples x 1]</li> <li>Tract_length.mat - Length of the occipital transcallosal tract (double)</li> </ul> <p>The analysis scripts that allow the users to replicate the results of the original publication can be found here: <a href="https://github.com/DNC-EEG-platform/SingleSubjectIHTTEstimation">https://github.com/DNC-EEG-platform/SingleSubjectIHTTEstimation</a><br> <br> Funding: Swiss National Science Foundation (grant no 320030 184784 and 32003B 212981), ROGER DE SPOELBERCH Foundation and Bertarelli Catalyst Foundation.</p> <p> </p> <p>Author: Rita Oliveira<br> PIs: Marzia De Lucia, Antoine Lutti</p> <p>Laboratory for Neuroimaging Research</p> <p>Lausanne University Hospital & University of Lausanne, Lausanne, Switzerland</p> <p>Copyright (C) 2022 Laboratory for Neuroimaging Research</p> <p> </p>
Data for "A possible explanation of interhemispheric asymmetry of Equatorial Plasma Bubbles in airglow images"
<p>This is the data used in the paper "A possible explanation of interhemispheric asymmetry of Equatorial Plasma Bubbles in airglow images" by Hickey et al. (2020). Ionograms from Hyderabad and Tirunelveli are provided as PDFs. 7 MHz reflection heights from both ionosondes are provide in tab delimeted text file. A raw all-sky image is provided as a .tif file. Unwrapped all-sky images are provided as .tif files at 250, 275, and 300 km emission altitudes. The raw and unwrapped data for these images are provide in .dat files.</p>
Data from: Passerine sister clade comparisons reveal variable macroevolutionary outcomes of interhemispheric dispersal
<p>Dispersal events offer a unique window into macroevolutionary processes. While several hypotheses predict alternative outcomes from such events, many empirical studies have been limited in geographic and phylogenetic scale. Here, we tested some of these hypotheses by comparing an assemblage of 16 oscine passerine clades, representing independent dispersal events into the Western Hemisphere, to their sister clades in the Eastern Hemisphere. We also compared the diversity of this assemblage of clades to an older, incumbent passerine clade in the Western Hemisphere, the suboscines. We tested for ecological opportunity and incumbency-mediated constraints versus neutrality by integrating estimates of clade-specific morphological disparities with models of multivariate regimes of trait evolution. While there was no consistent outcome of oscine dispersal and macroevolution in the Western Hemisphere relative to their Eastern Hemisphere sister groups, most clades supported a role for ecological opportunity or incumbency effects, and such effects were better explained by differences in species accumulation than by differences in rates of trait evolution or colonization timing. However, we found that this general pattern was not evident when comparing the entire oscine assemblage of the Western Hemisphere to the incumbent suboscine clade. Oscines and suboscines occupy comparable regions of functional trait diversity and, despite oscines possessing higher rates of trait evolution, these observations were consistent with simulated null expectations. This result suggests that oscine and suboscine assemblages most likely evolved in relative isolation until 5-10 million years ago, with oscines primarily in North America and suboscines in South America, which limited incumbency effects of the autochthonous suboscine radiation on subsequent oscine diversification.</p>
Data from: Layer 6 corticocortical neurons are a major route for intra and interhemispheric feedback
Open the record for dataset details and reuse information.
Data from: Passerine sister clade comparisons reveal variable macroevolutionary outcomes of interhemispheric dispersal
Open the record for dataset details and reuse information.
Interhemispheric Anterior Delta Desynchronization in Children Who Present to the Emergency Department With Acute Concussion: A Proof of Concept Study
ClinicalTrials.gov study NCT02916108. IPD Sharing: Not stated. Countries: 1. Publications: 12.
Deficit in Quadriceps Voluntary Activation After Anterior Cruciate Ligament Reconstruction: Roles of the "Learned Non-use" Paradigm and the Interhemispheric Inhibition
ClinicalTrials.gov study NCT04837417. IPD Sharing: YES. Countries: 1. Publications: 1.
Data from: Selective modulation of interhemispheric functional connectivity by HD-tACS shapes perception
Oscillatory neuronal synchronization between cortical areas has been suggested to constitute a flexible mechanism to coordinate information flow in the human cerebral cortex. However, it remains unclear whether synchronized neuronal activity merely represents an epiphenomenon or whether it is causally involved in the selective gating of information. Here, we combined bilateral high-density transcranial alternating current stimulation (HD-tACS) at 40 Hz with simultaneous electroencephalographic (EEG) recordings to study immediate electrophysiological effects during the selective entrainment of oscillatory gamma-band signatures. We found that interhemispheric functional connectivity was modulated in a predictable, phase-specific way: In-phase stimulation enhanced synchronization, anti-phase stimulation impaired functional coupling. Perceptual correlates of these connectivity changes were found in an ambiguous motion task, which strongly support the functional relevance of long-range neuronal coupling. Additionally, our results revealed a decrease in oscillatory alpha power in response to the entrainment of gamma band signatures. This finding provides causal evidence for the antagonistic role of alpha and gamma oscillations in the parieto-occipital cortex and confirms that the observed gamma band modulations were physiological in nature. Our results demonstrate that synchronized cortical network activity across several spatiotemporal scales is essential for conscious perception and cognition.
Interhemispheric Interactions Associated With Performance of Voluntary Movements in Patients With Stroke Motor Disability
ClinicalTrials.gov study NCT00029718. IPD Sharing: Not stated. Countries: 1. Publications: 3.
Interhemispheric Connectivity and Compensation
ClinicalTrials.gov study NCT05207878. IPD Sharing: YES. Countries: 1. Publications: 0.
Interhemispheric Plasticity in Humans
ClinicalTrials.gov study NCT00120666. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Interhemispheric Interaction of Parieto-Motor Cortico-Cortical Plasticity
ClinicalTrials.gov study NCT03253731. IPD Sharing: Not stated. Countries: 0. Publications: 3.
Data from: Selective modulation of interhemispheric functional connectivity by HD-tACS shapes perception
Open the record for dataset details and reuse information.
Non-reciprocal callosal projections and input gradients underlie interhemispheric communication in binocular visual cortex
GEO Series GSE310829. Mus musculus. 41 samples. Type: Expression profiling by high throughput sequencing.
Transcription factor 4 regulates the interhemispheric midline remodeling through neuron–astroglia communications during corpus callosum formation
GEO Series GSE298404. Mus musculus. 2 samples. Type: Expression profiling by high throughput sequencing.
Data for "Interhemispheric asymmetry in the high-latitude neutral density variations during the 13-14 March 2022 storm"
<p>DMSP data and GITM outputs used for "Interhemispheric asymmetry in the high-latitude neutral density variations during the 13-14 March 2022 storm".</p> <p>Descriptions of data can be found in ReadMe.txt.</p>
Correlation Between Carotid Stump Pressure and Interhemispheric rSO₂ Asymmetry During Awake Carotid Endarterectomy
ClinicalTrials.gov study NCT07150260. IPD Sharing: UNDECIDED. Countries: 1. Publications: 0.
Interhemispheric Inhibitory Interactions
ClinicalTrials.gov study NCT01371409. IPD Sharing: UNDECIDED. Countries: 1. Publications: 0.
Alexithymia Frequency and Interhemispheric Transfer in Patients With a First Demyelinating Event
ClinicalTrials.gov study NCT03796247. IPD Sharing: Not stated. Countries: 1. Publications: 0.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.