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Dataset results
214 results for “amplitude”
Decreasing seasonal cycle amplitude of methane in the northern high latitudes being driven by lower latitude changes in emissions and transport
<p>This dataset contains the smoothed and detrended time series of methane from the TOMCAT regional tagged tracer simulations between 1995-2020 at 22 NOAA surface observation sites. Each file contains the Site Code and the latitude and longitude of of each observation site. The regional file contains the region code of each regional tagged tracer. More information on the TOMCAT simulation and the Site Codes and Region Codes can be found at: https://doi.org/10.5194/egusphere-2023-132, 2023</p>
Supporting data for "Measuring the Loschmidt amplitude for finite-energy properties of the Fermi-Hubbard model on an ion-trap quantum computer"
<p>This repository contains the supporting data for the publication: "Measuring the Loschmidt amplitude for finite-energy properties of the Fermi-Hubbard model on an ion-trap quantum computer".</p>
Simulation data for "Connection between Chorus Wave Amplitude and Background Magnetic Field Inhomogeneity: A Parametric Study" which will be submitted to Geophysical Research Letters
<p>Simulation data for "Connection between Chorus Wave Amplitude and Background Magnetic Field Inhomogeneity: A Parametric Study" which will be submitted to Geophysical Research Letters.</p> <p>Including the simulation input parameter file and the necessary output data for analysis described in the article. The output data consists of waveform data at certain locations (|MLAT| = 3 deg).</p>
Data Set of selected strong motion parameters and Fourier Amplitude Spectra for the East Anatolian Fault Zone, Türkiye (January 2019 - February 2024)
<p>This product represents a high-quality Data Set useful for seismological studies in the East Anatolian Fault Zone, Türkiye and is addressed to the community that study the seismic source and ground motion.</p> <p>The dataset considers 9,442 events in a magnitude range Ml from 2.0 to 5.5. The period covered by the dataset includes seismicity between January 1, 2019 and February 29, 2024 for a total of 270,704 seismic phases (148,223 P and 122,481 S). In addition to the earthquake catalog, the dataset includes selected strong motion parameters such as selected Peak Ground Acceleration (PGA), Peak Ground Velocity (PGV), as well as Fourier Amplitude Spectra (FAS).</p> <p>The dataset is distributed through the following tables, which are descrived in the "Table of contents" below.</p> <ul> <li><strong>events_catalog.csv</strong> is the file of earthquake;</li> <li><strong>stations.csv </strong>is the file of stations;</li> <li><strong>PGA_PGV.csv </strong>is the file of PGA and PGV;</li> <li><strong>FAS.tar.gz </strong>is the folder which contains (in .csv format) the 98 FAS from 0.05 to 47.20 Hz.</li> </ul> <p>For full details on the dataset and its scientific context, please refer to the paper:</p> <p><strong>L. Colavitti, D. Bindi, G. Tarchini, D. Scafidi, and D. Spallarossa (2025)</strong>. <br><em>"A high-quality Data Set for seismological studies in the East Anatolian Fault Zone, Türkiye"</em>, <br><em>Earth System Science Data</em>, <strong>17(6)</strong>, 3089-3108. <a href="https://doi.org/10.5194/essd-17-3089-2025">https://doi.org/10.5194/essd-17-3089-2025</a>.</p>
ECT Pulse Amplitude and Medial Temporal Lobe Engagement
ClinicalTrials.gov study NCT02999269. IPD Sharing: YES. Countries: 1. Publications: 2.
Effectiveness of the Precision Spinal Cord Stimulator System at Sub-Perception Amplitude
ClinicalTrials.gov study NCT02314000. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Title: Safety and Feasibility of Individualized Low Amplitude Seizure Therapy (iLAST)
ClinicalTrials.gov study NCT03895658. IPD Sharing: YES. Countries: 1. Publications: 3.
A comparative analysis of song amplitude across and within bird species
Open the record for dataset details and reuse information.
Amplitude modulations of cortical sensory responses in pulsatile evidence accumulation
Open the record for dataset details and reuse information.
Upper body biomechanical model for the analysis of the wrist motion amplitude
<p>The following files are available:</p> <p>- The Visual3D files (.cmo) corresponding to the upper body biomechanical model</p> <p>- Videos of a pilot data acquisition from a healthy individual</p> <p>- Videos of the biomechanical models of 11 individuals with Parkinson's disease, used to assess the motion amplitude of the wrist with and without the use of an active orthosis, for four scenarios: Extension Without Orthosis (ENO), Extension With Orthosis (EWO), Flexion Without Orthosis (FNO) and Flexion With Orthosis (FWO)</p>
Hearing sensitivity and amplitude coding in bats are differentially shaped by echolocation calls and social calls
Differences in auditory perception between species are influenced by phylogenetic origin and the perceptual challenges imposed by the natural environment, e.g. detecting prey- or predator-generated sounds and communication signals. Bats are well suited for comparative studies on auditory perception since they predominantly rely on echolocation to perceive the world, while their social calls and most environmental sounds have low frequencies. We tested if hearing sensitivity and stimulus level coding in bats differ between high and low frequency ranges by measuring auditory brainstem responses (ABRs) of 86 bats belonging to 11 species. In most species, auditory sensitivity was equally good at both high and low frequency ranges, while amplitude was more finely coded for higher frequency ranges. Additionally, we conducted a phylogenetic comparative analysis by combining our ABR data with published data on 27 species. Species-specific peaks in hearing sensitivity correlated with peak frequencies of echolocation calls and pup isolation calls, suggesting that changes in hearing sensitivity evolved in response to frequency changes of echolocation and social calls. Overall, our study provides the most comprehensive comparative assessment of bat hearing capacities to date and highlights the evolutionary pressures acting on their sensory perception.
Spectral-power associations reflect amplitude modulation and within-frequency interactions on the sub-second timescale and cross-frequency interactions on the seconds timescale
<p>We investigated the global structure of intrinsic cross-frequency dynamics by systematically examining power-based temporal associations among a broad range of oscillation frequencies both within and across EEG-based current sources (sites). We focused on power-based associations that could reveal unique timescale dependence independently of interacting frequencies. Large spectral-power fluctuations across all sites occurred at two characteristic timescales, sub-second and seconds, yielding distinct patterns of cross-frequency associations. On the fast sub-second timescale, within-site (local) associations were consistently between pairs of <i>beta</i>-<i>gamma</i> frequencies differing by a constant Delta-<i>f</i> (particularly Delta-<i>f </i>~ 10 Hz at posterior sites and Delta-<i>f </i>~ 16 Hz at lateral sites) suggesting that higher-frequency oscillations are organized into Delta-<i>f</i> amplitude-modulated packets, whereas cross-site (long-distance) associations were all within-frequency (particularly in the >30 Hz and 6-12 Hz ranges, suggestive of feedforward and feedback interactions). On the slower seconds timescale, within-site (local) associations were characterized by a broad range of frequencies selectively associated with ~10 Hz at posterior sites and associations among higher (>20 Hz) frequencies at lateral sites, whereas cross-site (long-distance) associations were characterized by a broad range of frequencies at posterior sites selectively associated with ~10 Hz at other sites, associations among higher (>20 Hz) frequencies among lateral and anterior sites, and prevalent associations at ~10 Hz. Regardless of timescale, within-site (local) cross-frequency associations were weak at anterior sites indicative of frequency-specific operations. Overall, these results suggest that the fast sub-second-timescale coordination of spectral power is limited to local amplitude modulation and insulated within-frequency long-distance interactions (likely feedforward and feedback interactions), while characteristic patterns of cross-frequency interactions emerge on the slower seconds timescale. The results also suggest that the occipital <i>alpha</i> oscillations play a role in organizing higher-frequency oscillations into ~10 Hz amplitude-modulated packets to communicate with other regions. Functional implications of these timescale-dependent cross-frequency associations await future investigations.</p>
Data from: A test of the eavesdropping avoidance hypothesis as an explanation for the structure of low amplitude aggressive signals in the song sparrow
Low amplitude signals function in private exchanges of information between signalers and nearby receivers. The eavesdropping avoidance hypothesis proposes that selection favors quiet threat signals in order to avoid the costs of eavesdroppers. If true, then selection should favor other acoustic traits in addition to low amplitude that lead to quiet signals transmitting less effectively through the environment compared to broadcast signals. The "warbled" soft songs of male song sparrows differ from "crystallized" soft songs and from broadcast songs in a number of acoustic traits, suggesting that these songs may transmit less effectively. We tested this prediction in a field experiment by playing broadcast songs, crystallized soft songs, and warbled soft songs through a loudspeaker at the same amplitude and recording the propagated songs at five distances, at two heights, and in two different habitat types. Counter to our prediction, we found no evidence that either form of soft song transmits differently than broadcast song when all were played loudly. If anything, soft songs transmitted more effectively when all songs were played quietly. Our results do not support one prediction made by the eavesdropping avoidance hypothesis, although the possibility remains that reduced amplitude alone is sufficient to reduce eavesdropping. The question of why warbled soft song differs in acoustic structure remains unresolved.
Data from: Deciphering information encoded in birdsong: male songbirds with fertile mates respond most strongly to complex, low-amplitude songs used in courtship
Research on the function of acoustic signals has focused on high-amplitude, long-range song (LRS) and largely ignored low-amplitude songs produced by many species during close-proximity, conspecific interactions. Low-amplitude songs can be structurally identical to LRS (soft LRS) or they can be widely divergent, sharing few spectral and temporal attributes with LRS (short-range song (SRS)). SRS is often more complex than LRS and is frequently sung by males during courtship. To assess function, we performed two playback experiments on males of a socially monogamous songbird. We compared responses of males whose mates were fertile or non-fertile to differences in song structure (SRS v. LRS and soft LRS), amplitude (SRS and soft LRS v. LRS), and tempo (slow v. fast SRS). Males responded more strongly to SRS than to LRS or soft LRS, indicating that song structure had a greater effect on response than song amplitude. SRS tempo did not detectably affect male response. Importantly, males responded more strongly to SRS when their mates were fertile, presumably because hearing SRS can indicate that a male's mate is being courted by an intruding male and a strong response can deter extra-pair competitors. We conclude that low-amplitude songs can function in both inter- and intra-sexual communication and should receive greater attention in future studies of mate choice and male-male competition.
Data from: Limits on information transduction through amplitude and frequency regulation of transcription factor activity
Signaling pathways often transmit multiple signals through a single shared transcription factor (TF) and encode signal information by differentially regulating TF dynamics. However, signal information will be lost unless it can be reliably decoded by downstream genes. To understand the limits on dynamic information transduction, we apply information theory to quantify how much gene expression information the yeast TF Msn2 can transduce to target genes in the amplitude or frequency of its activation dynamics. We find that although the amount of information transmitted by Msn2 to single target genes is limited, information transduction can be increased by modulating promoter cis-elements or by integrating information from multiple genes. By correcting for extrinsic noise, we estimate an upper bound on information transduction. Overall, we find that information transduction through amplitude and frequency regulation of Msn2 is limited to error-free transduction of signal identity, but not signal intensity information.
Supplementary data for paper: Extremum seeking to control the amplitude and frequency of a pulsed jet for bluff body drag reduction
<p>Data accompanying the Experiments in Fluids paper entitled: Extremum seeking to control the amplitude and frequency of a pulsed jet for bluff body drag reduction. http://dx.doi.org/10.1007/s00348-016-2243-4.</p> <p>Zipped files contain the folders of data, while the .mat files contain Matlab scripts to generate the plots in the paper.</p>
Thomson scattering amplitudes on the axis at the midplane of the GDT
<p>Thomson scattering amplitudes on the axis at the midplane of the GDT</p>
03/04 - Spatial and Amplitude Dynamics of Neurostimulation: Insights from the Acute Intrahippocampal Kainate Seizure Mouse Model
<p>Dataset #3 of 4</p>
01/04 - Spatial and Amplitude Dynamics of Neurostimulation: Insights from the Acute Intrahippocampal Kainate Seizure Mouse Model
<p>Dataset #1 of 4</p>
Relative traveltimes and amplitude ratios of seismic triplications for the four earthquakes in the southwestern Siberia and resulting best-fit LVL velocity models
<p>For details about the data, please see the published paper titled "A partial molten low-velocity layer atop the mantle transition zone beneath the western Junggar: implication for the formation of subduction-induced sub-slab mantle plume" in the journal G-Cubed.</p>
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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.