Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
638
datasets available to search
ShareScore release 0.9.0
Dataset results
638 results for “Oscillation”
Major oscillations in spontaneous home‑cage activity in C57BL/6 mice housed under constant conditions
Open the record for dataset details and reuse information.
Data from: Genetic and paleomodelling evidence of the population expansion of the cattle egret Bubulcus ibis in Africa during the climatic oscillations of the Late Pleistocene
Open the record for dataset details and reuse information.
Organelle calcium-derived voltage oscillations in pacemaker neurons drive the motor program for food-seeking behavior in Aplysia
Open the record for dataset details and reuse information.
Global diversification of Anelosimus spiders driven by long distance overwater dispersal and Neogene climate oscillations
Open the record for dataset details and reuse information.
Data from: T cell morphodynamics reveal periodic shape oscillations in 3D migration
Open the record for dataset details and reuse information.
Data from: Genomic evidence of rapid and stable adaptive oscillations over seasonal time scales in Drosophila
Open the record for dataset details and reuse information.
Data from: Phylogeographic patterns of the desert poplar in northwest China shaped by both geology and climatic oscillations
Open the record for dataset details and reuse information.
LAM output for: The excitation of the Madden-Julian Oscillation as part of atmospheric adjustment to equatorial heating
Open the record for dataset details and reuse information.
Evolution of specialization in a plant-microbial mutualism is explained by the oscillation theory of speciation
Open the record for dataset details and reuse information.
h/e Oscillations in Interlayer Transport of Delafossites
<p>Microstructures can be carefully designed to reveal the quantum phase of the wave-like nature of electrons in a metal. Here we report phase coherent oscillations of the out-of-plane magnetoresistance in the layered delafossites PdCoO<sub>2</sub> and PtCoO<sub>2</sub>. The oscillation period is equivalent to that determined by the magnetic flux quantum, <em>h/e</em>, threading an area defined by the atomic interlayer separation and the sample width; here <em>h</em> is Planck’s constant and <em>e</em> is the charge of an electron. The phase of the electron wave function appears robust over length scales exceeding 10mm and persisting up to temperatures of T>50K. We show that the experimental signal stems from a periodic field-modulation of the out-of-plane hopping. These results demonstrate extraordinary single-particle quantum coherence lengths in the delafossites.</p>
Dataset related to the publication "Mechanical oscillations in lasing microspheres", DOI: 10.1063/1.4997182
<p>This folder contains the raw data from which the graphs in paper "Mechanical oscillations in lasing microsphere", DOI: 10.1063/1.4997182, have been obtained.</p>
Data from: Feedback cooling of a room temperature mechanical oscillator close to its motional groundstate
<p>Source data for figures.</p>
Janus microdimer swimming in oscillating magnetic field
<p><span><span>Artificial microswimmers powered by magnetic fields have numerous applications, such as drug delivery, biosensing for minimally invasive medicine and environmental remediation. Recently, a Janus microdimer surface walker that can be propelled by an oscillating magnetic field near a surface was reported by Li <i>et al.</i>[2018]. To clarify the mechanism for the surface walker, we numerically studied in detail a Janus microdimer swimming near a wall actuated by an oscillating magnetic field. The results showed that a Janus microdimer in an oscillating magnetic field can produce magnetic torque in the<i> y</i>-direction, which eventually propels the Janus microdimer along the <i>x</i>-direction near a wall. Furthermore, we found that the Janus microdimer can also move along a special direction in an oscillating magnetic field with two orientations without a wall. The knowledge obtained in this study is fundamental for understanding the interactions between a Janus microdimer and surfaces in an oscillating magnetic field and is useful for controlling Janus microdimer motion with or without a wall.</span></span></p>
Lorentzian filter correction of turbulence measurements on oscillating floating platforms: impact on wind spectra and eddy covariance fluxes
<p class="MsoTitle">Turbulence and eddy covariance measurements on a floating platform over water surfaces can be contaminated by platform oscillations, which may affect the calculated air–water exchange. The conventional method for decontamination of the platform oscillations from the wind velocity measurements requires the installation of an additional sensitive, and often costly, motion sensor. This paper examines a new mathematical decontamination method, termed Lorentzian filter, which avoids the need for such an instrument. The method, based on the Lorentzian function, capitalizes on the pseudo-harmonic behavior of the platform oscillations and reduces the amplitude of turbulent wind velocity data detected as artifacts at the specific natural frequencies of the platform. The Lorentzian filter was applied to wind velocity data measured by sonic anemometer and eddy covariance system over the Dead Sea, Israel, for 30 days. We examined three approaches of dealing with motion contamination: Lorentzian filter decontamination, motion sensor decontamination, and non-filtered raw wind velocity. Using the 3D wind velocity series, we examined the wind spectra, the co-spectra of water vapor concentration and horizontal wind speed with vertical wind speed and H2O and momentum fluxes. The Lorentzian filter performed very well in decontaminating the wind spectrum, meaning that it efficiently identified the contamination in the natural oscillation frequency and returned a decontaminated wind velocity time series. The co-spectra and fluxes were less prone to the contamination of platform oscillations, presumably due to low correlations between the spurious wind velocity components and other measured scalars, such as water vapor.</p>
Rotation-Dilation Coupled Flexure Oscillator with negative dilation
<p>Mock-up of a RDCO flexure oscillator showing a negative dilation, i.e, contraction, coupled to the rotation of the system. The mock-up was fabricated by laser cutting a 5 mm thick Polyoxymethylene (POM) sheet. It has an outer diameter of 200 mm and an angular stroke of ±18 degrees.</p> <p>This is a video supplement to the article "Design of a Flexure Rotational Time Base with Varying Inertia" published in the "Journal of Mechanical Design".</p>
Rotation-Dilation Coupled Flexure Oscillator with positive dilation
<p>Mock-up of a RDCO flexure oscillator showing a positive dilation coupled to the rotation of the system. The mock-up was fabricated by laser cutting a 5 mm thick Polyoxymethylene (POM) sheet. It has an outer diameter of 200 mm and an angular stroke of ±25 degrees.</p> <p>This is a video supplement to the article "Design of a Flexure Rotational Time Base with Varying Inertia" published in the "Journal of Mechanical Design".</p>
Data from: Surface color and predictability determine contextual modulation of V1 firing and gamma oscillations
The integration of direct bottom-up inputs with contextual information is a core feature of neocortical circuits. In area V1, neurons may reduce their firing rates when their receptive field input can be predicted by spatial context. Gamma-synchronized (30–80 Hz) firing may provide a complementary signal to rates, reflecting stronger synchronization between neuronal populations receiving mutually predictable inputs. We show that large uniform surfaces, which have high spatial predictability, strongly suppressed firing yet induced prominent gamma synchronization in macaque V1, particularly when they were colored. Yet, chromatic mismatches between center and surround, breaking predictability, strongly reduced gamma synchronization while increasing firing rates. Differences between responses to different colors, including strong gamma-responses to red, arose from stimulus adaptation to a full-screen background, suggesting prominent differences in adaptation between M- and L-cone signaling pathways. Thus, synchrony signaled whether RF inputs were predicted from spatial context, while firing rates increased when stimuli were unpredicted from context.
Data from: Generating electricity while walking with a medial-lateral oscillating load carriage device
Biomechanical energy harvesters generate electricity, from human movement, to power portable electronics. We developed an energy harvesting module to be used in conjunction with a load carriage device that allows carried mass in a backpack to oscillate in the medial-lateral direction. The energy harvesting module was designed to tune medial-lateral oscillations of the carried mass to create favourable device-user interaction. We tested seven energy harvesting conditions and compared them to walking with the device when the weight was rigidly fixed to the backpack frame. For each energy harvesting condition, we changed the external load resistance: altering how much electricity was being generated and how much the carried mass would oscillate. We then correlated device behaviour to the biomechanical response of the user. The energy harvesting load carriage system generated electricity at no additional metabolic cost to the user, when compared to walking with the carried weight rigidly fixed. The device was able to generate up to 0.22±0.03 W of electricity, while walking with 9 kg of carried weight. The device also reduced the interaction forces experienced by the user, in the medial-lateral direction, compared to walking with the device when the mass was rigidly fixed.
Data from: Travelling Wave Pulse Coupled Oscillator (TWPCO) Using a Self-Organizing Scheme for Energy-efficient Wireless Sensor Networks
Recently, Pulse Coupled Oscillator (PCO)-based travelling waves have attracted substantial attention by researchers in wireless sensor network (WSN) synchronization. Because WSNs are generally artificial occurrences that mimic natural phenomena, the PCO utilizes firefly synchronization of attracting mating partners for modelling the WSN. However, given that sensor nodes are unable to receive messages while transmitting data packets (due to deafness), the PCO model may not be efficient for sensor network modelling. To overcome this limitation, the current study proposed a new scheme called the Travelling Wave Pulse Coupled Oscillator (TWPCO). For this, the study used a self-organizing scheme for energy-efficient WSNs that adopted travelling wave biologically inspired network systems based on phase locking of the PCO model to counteract deafness. From the simulation, it was found that the proposed TWPCO scheme attained a steady state after a number of cycles. It also showed superior performance compared to other mechanisms, with a reduction in the total energy consumption of 25 %. The results showed that the performance improved by 13 % in terms of data gathering. Based on the results, the proposed scheme avoids the deafness that occurs in the transmit state in WSNs and increases the data collection throughout the transmission states in WSNs.
Data from: Cross-frequency synchronization connects networks of fast and slow oscillations during visual working memory maintenance
Neuronal activity in sensory and fronto-parietal (FP) areas underlies the representation and attentional control, respectively, of sensory information maintained in visual working memory (VWM). Within these regions, beta/gamma phase-synchronization supports the integration of sensory functions, while synchronization in theta/alpha bands supports the regulation of attentional functions. A key challenge is to understand which mechanisms integrate neuronal processing across these distinct frequencies and thereby the sensory and attentional functions. We investigated whether such integration could be achieved by cross-frequency phase synchrony (CFS). Using concurrent magneto- and electroencephalography, we found that CFS was load-dependently enhanced between theta and alpha–gamma and between alpha and beta-gamma oscillations during VWM maintenance among visual, FP, and dorsal attention (DA) systems. CFS also connected the hubs of within-frequency-synchronized networks and its strength predicted individual VWM capacity. We propose that CFS integrates processing among synchronized neuronal networks from theta to gamma frequencies to link sensory and attentional functions.
ScienceDex guides
Understand access before you commit
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.