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.
248
datasets available to search
ShareScore release 0.9.0
Dataset results
248 results for “rhythmicity”
Data from: Circadian rhythmicity persists through the Polar night and midnight sun in Svalbard reindeer
Open the record for dataset details and reuse information.
Data for: Isochrony and rhythmic interaction in ape duetting
Open the record for dataset details and reuse information.
Data from: Rhythmic motor behavior influences perception of visual time
Temporal processing is fundamental for an accurate synchronization between motor behavior and sensory processing. Here we investigate how motor timing during rhythmic tapping influences perception of visual time. Participants listen to a sequence of four auditory tones played at 1 Hz and continue the sequence (without auditory stimulation) by tapping four times with their finger. During finger tapping, they are presented with an empty visual interval and are asked to judge its length compared to a previously internalized interval of 150 ms. The visual temporal estimates show non-monotonic changes locked to the finger tapping: perceived time is maximally expanded at half time between the two consecutive finger taps, and maximally compressed near tap onsets. Importantly, the temporal dynamics of the perceptual time distortion scales linearly with the timing of the motor tapping, with maximal expansion being always anchored to the center of the inter-tap interval. These results reveal an intrinsic coupling between distortion of perceptual time and production of self-timed motor rhythms, suggesting the existence of a timing mechanism that keeps perception and action accurately synchronized.
Stressful daylight: Differences in diel rhythmicity between albino and pigmented fish
<p>In laboratory experiments, variously colored strains of animals, including those with albino phenotypes, are commonly used. The melanocortin theory suggests, however, that coloration phenotypes alter animal physiology and behavior. Animals with the albino phenotype show photoreceptor degradation associated with lowered visual accuracy, escape reactions, etc., presumably accompanied by prevailing nocturnal activity and lowered aggressiveness. This assumption was tested in small groups of albino and pigmented European catfish, Silurus glanis, during the circadian cycle. The frequency of agonistic interactions was observed during mutual contests for shelters, and subsequently, blood plasma, brain, gill, and liver samples were collected to evaluate stress parameters. In an experimental arena with shelters, the light/dark rhythmicity of locomotor activity and aggressiveness of the two phenotypes were comparable; the acrophase was observed at night, and a lower peak was observed at dawn. In an experimental stream without shelters, the acrophase of locomotor activity occurred at night for only the pigmented phenotype. In the evaluation of four antioxidants and one oxidative stress indicator, representing a total of 15 indices, albino fish showed significant rhythmicity for eight indices, whereas pigmented catfish showed significant rhythmicity for five indices. The production of blood stress parameters in the acrophase during the day occurred only in albino fish.</p> <p>A complex model was fitted with the aim of evaluating the links between behavioral and biochemical indices. Time periodicity was modeled using a sine wave and confirmed parallel courses of agonistic interactions in the catfish groups; the acrophase at dawn was associated with a 4.08-fold (conf. int. 3.53–4.7) increase in such interactions. The changes in glucose and superoxide dismutase concentrations varied with phenotype, while the effects of cortisol, lactate and catalase did not. In summary, the rhythmicity of locomotor activity and changes in the aggressiveness of catfish were influenced by shelter availability, and the effect of light-induced stress was more apparent in albino fish than in pigmented conspecific fish. The results suggested that animals with pigmentation patterns naturally occurring in the wild show more reasonable values during experiments than animals with an albino phenotype.</p>
Model integration of circadian and sleep-wake driven contributions to rhythmic gene expression reveals distinct regulatory principles
Open the record for dataset details and reuse information.
Data from: Neuronal morphologies built for reliable physiology in a rhythmic motor circuit
It is often assumed that highly-branched neuronal structures perform compartmentalized computations. However, previously we showed that the Gastric Mill (GM) neuron in the crustacean stomatogastric ganglion (STG) operates like a single electrotonic compartment, despite having thousands of branch points and total cable length >10 mm (Otopalik et al., 2017a; 2017b). Here we show that compact electrotonic architecture is generalizable to other STG neuron types, and that these neurons present direction-insensitive, linear voltage integration, suggesting they pool synaptic inputs across their neuronal structures. We also show, using simulations of 720 cable models spanning a broad range of geometries and passive properties, that compact electrotonus, linear integration, and directional insensitivity in STG neurons arise from their neurite geometries (diameters tapering from 10-20 µm to < 2 µm at their terminal tips). A broad parameter search reveals multiple morphological and biophysical solutions for achieving different degrees of passive electrotonic decrement and computational strategies in the absence of active properties.
Data from: Neural mechanisms of rhythm-based temporal prediction: delta phase-locking reflects temporal predictability but not rhythmic entrainment
Predicting the timing of upcoming events enables efficient resource allocation and action preparation. Rhythmic streams, such as music, speech, and biological motion, constitute a pervasive source for temporal predictions. Widely accepted entrainment theories postulate that rhythm-based predictions are mediated by synchronizing low-frequency neural oscillations to the rhythm, as indicated by increased phase concentration (PC) of low-frequency neural activity for rhythmic compared to random streams. However, we show here that PC enhancement in scalp recordings is not specific to rhythms but is observed to the same extent in less periodic streams if they enable memory-based prediction. This is inconsistent with the predictions of a computational entrainment model of stronger PC for rhythmic streams. Anticipatory change in alpha activity and facilitation of electroencephalogram (EEG) manifestations of response selection are also comparable between rhythm- and memory-based predictions. However, rhythmic sequences uniquely result in obligatory depression of preparation-related premotor brain activity when an on-beat event is omitted, even when it is strategically beneficial to maintain preparation, leading to larger behavioral costs for violation of prediction. Thus, while our findings undermine the validity of PC as a sign of rhythmic entrainment, they constitute the first electrophysiological dissociation, to our knowledge, between mechanisms of rhythmic predictions and of memory-based predictions: the former obligatorily lead to resonance-like preparation patterns (that are in line with entrainment), while the latter allow flexible resource allocation in time regardless of periodicity in the input. Taken together, they delineate the neural mechanisms of three distinct modes of preparation: continuous vigilance, interval-timing-based prediction and rhythm-based prediction.
Discrete Versus Rhythmic Gait Training
ClinicalTrials.gov study NCT02650440. IPD Sharing: UNDECIDED. Countries: 1. Publications: 0.
Partnered Rhythmic Rehabilitation in Prodromal Alzheimer's Disease
ClinicalTrials.gov study NCT04029623. IPD Sharing: YES. Countries: 1. Publications: 0.
Rhythmic Entrainment in Bilingual Speakers With Dysarthria
ClinicalTrials.gov study NCT03645265. IPD Sharing: YES. Countries: 1. Publications: 0.
Rhythmic Auditory Stimulation on Neural Activity During Finger-tapping in PD Patients
ClinicalTrials.gov study NCT05839821. IPD Sharing: NO. Countries: 0. Publications: 6.
Increasing Physical Activity in COPD Through Rhythmically Enhanced Music
ClinicalTrials.gov study NCT03655028. IPD Sharing: NO. Countries: 1. Publications: 0.
Data from: Social synchronization of circadian rhythmicity in female mice depends on the number of cohabiting animals
Open the record for dataset details and reuse information.
Data from: Mutual stabilization of rhythmic vocalization and whole-body movement
Open the record for dataset details and reuse information.
Data from: Neuronal morphologies built for reliable physiology in a rhythmic motor circuit
Open the record for dataset details and reuse information.
Data from: Neural mechanisms of rhythm-based temporal prediction: delta phase-locking reflects temporal predictability but not rhythmic entrainment
Open the record for dataset details and reuse information.
Data from: Rhythmic motor behavior influences perception of visual time
Open the record for dataset details and reuse information.
Stressful daylight: Differences in diel rhythmicity between albino and pigmented fish
Open the record for dataset details and reuse information.
Co-expression networks in Chlamydomonas reveal significant rhythmicity in batch cultures and empower gene function discovery
Open the record for dataset details and reuse information.
Autonomous rhythmic activity in glioma networks drives brain tumor growth
GEO Series GSE215365. Homo sapiens. 4 samples. Type: Expression profiling by high throughput sequencing.
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.