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231 results for “functional connectivity”
TZO - Working memory performance in glioma patients is associated with functional connectivity between the right dorsolateral prefrontal cortex and default mode network
<p>Data files hosted on Figshare for "Working memory performance in glioma patients is associated with functional connectivity between the right dorsolateral prefrontal cortex and default mode network".</p> <p>Contains functional connectivity matrices, clinical variables, and working memory performance scores of 45 glioma patients.</p>
Figure 2 from: Darnaude AM, Arnaud-Haond S, Hunter E, Gaggiotti O, Sturrock A, Beger M, Volckaert FAM, Pérez-Ruzafa A, López-López L, Tanner SE, Turan C, Ahmet Doğdu S, Katsanevakis S, Costantini F (2022) Unifying approaches to Functional Marine Connectivity for improved marine resource management: the European SEA-UNICORN COST Action. Research Ideas and Outcomes 8: e80223. https://doi.org/10.3897/rio.8.e80223
Figure 2 General structure of the SEA-UNICORN COST Action, in link with its objectives and expected outcomes at the Science-Policy-Society interface. WG = Working Group.
Figure 1 from: Darnaude AM, Arnaud-Haond S, Hunter E, Gaggiotti O, Sturrock A, Beger M, Volckaert FAM, Pérez-Ruzafa A, López-López L, Tanner SE, Turan C, Ahmet Doğdu S, Katsanevakis S, Costantini F (2022) Unifying approaches to Functional Marine Connectivity for improved marine resource management: the European SEA-UNICORN COST Action. Research Ideas and Outcomes 8: e80223. https://doi.org/10.3897/rio.8.e80223
Figure 1 Location of the organizations in the network of the COST Action SEA-UNICORN with a focus on the researchers working on the European Seas (date: 01/08/2021).
Data from: Maximizing negative correlations in resting-state functional connectivity MRI by time-lag
This paper aims to better understand the physiological meaning of negative correlations in resting state functional connectivity MRI (r-fcMRI). The correlations between anatomy-based brain regions of 18 healthy humans were calculated and analyzed with and without a correction for global signal and with and without spatial smoothing. In addition, correlations between anatomy-based brain regions of 18 naïve anesthetized rats were calculated and compared to the human data. T-statistics were used to differentiate between positive and negative connections. The application of spatial smoothing and global signal correction increased the number of significant positive connections but their effect on negative connections was complex. Positive connections were mainly observed between cortical structures while most negative connections were observed between cortical and non-cortical structures with almost no negative connections between non-cortical structures. In both human and rats, negative connections were never observed between bilateral homologous regions. The main difference between positive and negative connections in both the human and rat data was that positive connections became less significant with time-lags, while negative connections became more significant with time-lag. This effect was evident in all four types of analyses (with and without global signal correction and spatial smoothing) but was most significant in the analysis with no correction for the global signal. We hypothesize that the valence of r-fcMRI connectivity reflects the relative contributions of cerebral blood volume (CBV) and flow (CBF) to the BOLD signal and that these relative contributions are location-specific. If cerebral circulation is primarily regulated by CBF in one region and by CBV in another, a functional connection between these regions can manifest as an r-fcMRI negative and time-delayed correlation. Similarly, negative correlations could result from spatially inhomogeneous responses of rCBV or rCBF alone. Consequently, neuronal regulation of brain circulation may be deduced from the valence of r-fcMRI connectivity.
Supplementary material 1 from: Hartz SM, Rocha EA, Brum FT, Luza AL, Guimarães TFR, Becker FG (2019) Influences of the area, shape and connectivity of coastal lakes on the taxonomic and functional diversity of fish communities in Southern Brazil. Zoologia 36: 1-12. https://doi.org/10.3897/zoologia.36.e23539
: Data type: species data
Supplementary material 2 from: Hartz SM, Rocha EA, Brum FT, Luza AL, Guimarães TFR, Becker FG (2019) Influences of the area, shape and connectivity of coastal lakes on the taxonomic and functional diversity of fish communities in Southern Brazil. Zoologia 36: 1-12. https://doi.org/10.3897/zoologia.36.e23539
: Data type: species data
Figure 2 from: Hartz SM, Rocha EA, Brum FT, Luza AL, Guimarães TFR, Becker FG (2019) Influences of the area, shape and connectivity of coastal lakes on the taxonomic and functional diversity of fish communities in Southern Brazil. Zoologia 36: 1-12. https://doi.org/10.3897/zoologia.36.e23539
Figure 2 The final path model showing the causal relationships between the landscape variables and both the taxonomic and functional diversity of fish communities in the coastal lakes of the Tramandaí River Basin in Southern Brazil. Dotted line = not significant (p > 0.05). The curved double-headed arrows in grey depict correlated errors among variables.
Figure 1 from: Hartz SM, Rocha EA, Brum FT, Luza AL, Guimarães TFR, Becker FG (2019) Influences of the area, shape and connectivity of coastal lakes on the taxonomic and functional diversity of fish communities in Southern Brazil. Zoologia 36: 1-12. https://doi.org/10.3897/zoologia.36.e23539
Figure 1 Hypothetical framework used to build the path model, with plausible causal connections between the landscape variables and both the taxonomic and functional diversity of the fish communities of the coastal lakes of the Tramandaí River Basin in Southern Brazil
Supplementary material 3 from: Hartz SM, Rocha EA, Brum FT, Luza AL, Guimarães TFR, Becker FG (2019) Influences of the area, shape and connectivity of coastal lakes on the taxonomic and functional diversity of fish communities in Southern Brazil. Zoologia 36: 1-12. https://doi.org/10.3897/zoologia.36.e23539
: Data type: species data
Supplementary material 4 from: Hartz SM, Rocha EA, Brum FT, Luza AL, Guimarães TFR, Becker FG (2019) Influences of the area, shape and connectivity of coastal lakes on the taxonomic and functional diversity of fish communities in Southern Brazil. Zoologia 36: 1-12. https://doi.org/10.3897/zoologia.36.e23539
: Data type: species data
Couple-Wise Functional Connectivity Similarity Between Auditory And Salience Network Predicts Marital Satisfaction
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Data from: Habitat connectivity and local conditions shape taxonomic and functional diversity of arthropods on green roofs
Summary 1. Increasing development of urban environments creates high pressure on green spaces with potential negative impacts on biodiversity and ecosystem services. There is growing evidence that green roofs – rooftops covered with vegetation – can contribute mitigate the loss of urban green spaces by providing new habitats for numerous arthropod species. 2. Whether green roofs can contribute to enhance taxonomic and functional diversity and increase connectivity across urbanized areas remains, however, largely unknown. Furthermore, only limited information is available on how environmental conditions shape green roof arthropod communities. 3. We investigated the community composition of arthropods (Apidae, Curculionidae, Araneae and Carabidae) on 40 green roofs and 40 green sites at ground level in the city of Zurich, Switzerland. We assessed how the site's environmental variables (such as area, height, vegetation, substrate and connectivity among sites) affect species richness and functional diversity using generalized linear models. We used an extension of co-inertia analysis (RLQ) and fourth-corner analysis to highlight the mechanism underlying community assemblages across taxonomic groups on green roof and ground communities. 4. Species richness was higher at ground-level sites, while no difference in functional diversity was found between green roofs and ground sites. Green roof arthropod diversity increased with higher connectivity and plant species richness, irrespective of substrate depth, height and area of green roofs. The species trait analysis reviewed the mechanisms related to the environmental predictors that shape the species assemblages of the different taxa at ground and roof sites. 5. Our study shows the important contribution of green roofs in maintaining high functional diversity of arthropod communities across different taxonomic groups, despite their lower species richness compared to ground sites. Species communities on green roofs revealed to be characterized by specific trait assemblages. The study also provides details on the environmental conditions that influence arthropod diversity and gives new perspectives on how the design of green roofs can be improved to increase their ecological value. Furthermore, the study highlights the importance of integrating green roofs in planning policies which aim to enhance urban habitat connectivity.
Data from: Contributions of local speech encoding and functional connectivity to audio-visual speech perception
Seeing a speaker's face enhances speech intelligibility in adverse environments. We investigated the underlying network mechanisms by quantifying local speech representations and directed connectivity in MEG data obtained while human participants listened to speech of varying acoustic SNR and visual context. During high acoustic SNR speech encoding by temporally entrained brain activity was strong in temporal and inferior frontal cortex, while during low SNR strong entrainment emerged in premotor and superior frontal cortex. These changes in local encoding were accompanied by changes in directed connectivity along the ventral stream and the auditory-premotor axis. Importantly, the behavioral benefit arising from seeing the speaker's face was not predicted by changes in local encoding but rather by enhanced functional connectivity between temporal and inferior frontal cortex. Our results demonstrate a role of auditory-frontal interactions in visual speech representations and suggest that functional connectivity along the ventral pathway facilitates speech comprehension in multisensory environments.
Functional Coupling of Cortico-Cortical and Cortico-Muscular Connections During Motor Movements: An Electrocorticographic Study of Ipsilateral Motor Control
ClinicalTrials.gov study NCT00036595. IPD Sharing: Not stated. Countries: 1. Publications: 3.
Influence of Medication on Functional Connectivity
ClinicalTrials.gov study NCT03612713. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Neural Basis of Sensory and Motor Learning: Functional Connections
ClinicalTrials.gov study NCT05124301. IPD Sharing: YES. Countries: 1. Publications: 0.
Functional Connectivity & Stimulation-enhanced Therapy Post Stroke
ClinicalTrials.gov study NCT03473808. IPD Sharing: NO. Countries: 1. Publications: 0.
Data from: Altered fronto-temporal functional connectivity in individuals at ultra-high-risk of developing psychosis
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Data from: Temporal identity establishes columnar neuron morphology, connectivity, and function in a Drosophila navigation circuit
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Data from: Social interactions elicit rapid shifts in functional connectivity in the social decision-making network of zebrafish
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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.