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61 results for “olfaction”
Data from: Olfaction contributes to pelagic navigation in a coastal shark
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Data from: De novo transcriptome analysis of the common New Zealand stick insect Clitarchus hookeri (Phasmatodea) reveals genes involved in olfaction, digestion and sexual reproduction
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Morphology of nares associated with stereo-olfaction in baleen whales
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Data from: Sex-specific responses to sexual familiarity, and the role of olfaction in Drosophila
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Data from: Weak olfaction increases seed scatter-hoarding by Siberian chipmunks: implication in shaping plant-animal interactions
Scatter-hoarding of seeds by animals plays an essential role in seed dispersal of plants and in shaping plant–animal interactions in forest ecosystems, but the function of scatter-hoarding behavior is still unclear. We hypothesize that weak olfactory cues between seeds and scatter-hoarding animals would increase scatter-hoarding. Using a rodent–plant system of Siberian chipmunks Tamias sibiricus and Korean pines Pinus koraiensis, we tested the effects on seed scatter-hoarding intensity by measuring and modifying the seed odor intensities and the abilities of the animals to detect seed odor. Siberian chipmunks seemed to scatter-hoard more seeds with weaker odor signals, and Siberian chipmunks with reduced olfactory ability scatter-hoarded more seeds, supporting our hypothesis. Our studies suggest that olfaction may have played an important role in the evolution of the strength of seed odor and scatter-hoarding behavior of animals, and in shaping plant–animal interactions.
Data from: Loss of olfaction in sea snakes provides new perspectives on the aquatic adaptation of amniotes
Marine amniotes, a polyphyletic group, provide an excellent opportunity for studying convergent evolution. Their sense of smell tends to degenerate, but this process has not been explored by comparing fully-aquatic species with their amphibious relatives in an evolutionary context. Here, we sequenced the genomes of fully-aquatic and amphibious sea snakes, and identified repertoires of chemosensory receptor genes involved in olfaction. Snakes possess large numbers of the olfactory receptor (OR) genes and the type-2 vomeronasal receptor (V2R) genes, and expression profiling in the olfactory tissues suggests that snakes use the ORs in the main olfactory system (MOS) and the V2Rs in the vomeronasal system (VNS). The number of OR genes has decreased in sea snakes, and fully-aquatic species lost the MOS which is responsible for detecting airborne odors. In contrast, sea snakes including fully-aquatic species retain a number of V2R genes and a well-developed VNS for smelling underwater. This study suggests that the sense of smell also degenerated in sea snakes, particularly in fully-aquatic species, but their residual olfactory capability is distinct from that of other fully-aquatic amniotes. Amphibious species show an intermediate status between terrestrial and fully-aquatic snakes, implying their importance in understanding the process of aquatic adaptation.
Data from: Direct behavioral and neurophysiological evidence for retronasal olfaction in mice
The neuroscience of flavor perception is hence becoming increasingly important to understand food flavor perception that guides food selection, ingestion and appreciation. We recently provided evidence that rats can use the retronasal mode of olfaction, an essential element of human flavor perception. We showed that in rats, like humans, odors can acquire a taste. We and others also defined how the input of the olfactory bulb (OB) -not functionally imageable in humans- codes retronasal smell in anesthetized rat. The powerful awake transgenic mouse, however, would be a valuable additional model in the study of flavor neuroscience. We used a go/no-go behavioral task to test the mouse's ability to detect and discriminate the retronasal odor amyl acetate. In this paradigm a tasteless aqueous odor solution was licked by water-restricted head-fixed mice from a lick spout. Orthonasal contamination was avoided. The retronasal odor was successfully discriminated by mice against pure distilled water in a concentration-dependent manner. Bulbectomy removed the mice's ability to discriminate the retronasal odor but not tastants. The OB showed robust optical calcium responses to retronasal odorants in these awake mice. These results suggest that mice, like rats, are capable of smelling retronasally. This direct neuro-behavioral evidence establishes the mouse as a useful additional animal model for flavor research.
A push-pull strategy for integrated control of Bactrocera minax (Diptera, Tephritidae) based on olfaction and vision
<p>All raw data in the picture or table of this article.</p>
Olfactive Stimulation Interventions With Mothers' Milk on Preterm Pain Response
ClinicalTrials.gov study NCT04062513. IPD Sharing: Not stated. Countries: 0. Publications: 1.
The Effects of ECT and/or iTBS on Olfaction and Cognition in Patients With Depression
ClinicalTrials.gov study NCT02804347. IPD Sharing: UNDECIDED. Countries: 0. Publications: 32.
Data from: Direct behavioral and neurophysiological evidence for retronasal olfaction in mice
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Data from: Weak olfaction increases seed scatter-hoarding by Siberian chipmunks: implication in shaping plant-animal interactions
Open the record for dataset details and reuse information.
Data from: Loss of olfaction in sea snakes provides new perspectives on the aquatic adaptation of amniotes
Open the record for dataset details and reuse information.
Role of iRhom2 in Olfaction: Implications for Odorant Receptor Regulation and Activity-dependent Adaptation
GEO Series GSE268171. Mus musculus. 24 samples. Type: Expression profiling by high throughput sequencing.
Clinical datasets related DeNoPa olfaction, cerebrospinal fluid readouts and alpha-synuclein seeding aggregation assay
<p>These dataset files are associated with the manuscript: </p> <p>Mollenhauer B*, Li J*, Schade S, Weber S, Trenkwalder C, Concha-Marambio L, Tomlinson JJ, aSCENT-PD Investigators and Schlossmacher MG. <em>Persistent Hyposmia as Surrogate for alpha-Synuclein-Linked Brain Pathology. </em>Submitted 2023</p> <p>3 files:</p> <p>Data dictionary.csv</p> <p>Baseline_cut.csv</p> <p>Time_cut.csv</p> <p>The file "Data dictionary.csv" contains description of the two data files and the variables within.</p> <p>Clinical data used for this study is from the DeNoPa Cohort, led by Dr. Brit Mollenhauer, Department of Neurology, University of Goettingen, Kassel, Germany and the Paracelsus-Elena-Klinik. See references below for additional details.</p> <p>Mollenhauer B, Trautmann E, Sixel-Döring F, Wicke T, Ebentheuer J, Schaumburg M, Lang E, Focke NK, Kumar KR, Lohmann K, Klein C, Schlossmacher MG, Kohnen R, Friede T, Trenkwalder C; DeNoPa Study Group. Nonmotor and diagnostic findings in subjects with de novo Parkinson disease of the DeNoPa cohort. Neurology. 2013 Oct 1;81(14):1226-34. doi: 10.1212/WNL.0b013e3182a6cbd5</p> <p>Concha-Marambio L, Weber S, Farris CM, Dakna M, Lang E, Wicke T, Ma Y, Starke M, Ebentheuer J, Sixel-Döring F, Muntean ML, Schade S, Trenkwalder C, Soto C, Mollenhauer B. Accurate Detection of α-Synuclein Seeds in Cerebrospinal Fluid from Isolated Rapid Eye Movement Sleep Behavior Disorder and Patients with Parkinson's Disease in the DeNovo Parkinson (DeNoPa) Cohort. Mov Disord. 2023 Apr;38(4):567-578. doi: 10.1002/mds.29329</p>
Olfaction and Inflammation in Chronic Rhinosinusitis With Nasal Polyps
ClinicalTrials.gov study NCT04104594. IPD Sharing: NO. Countries: 1. Publications: 0.
Efficacy of Olfactive Training on Loss of Smell and Taste Caused by SARS CoV2 COVID-19 (Covid-Smell)
ClinicalTrials.gov study NCT07190911. IPD Sharing: NO. Countries: 1. Publications: 0.
Evaluation of the Therapeutic Approach of Aromatherapy by Olfaction of Essential Oils in Association With Hypnosis in the Management of Patients Followed for Cancer
ClinicalTrials.gov study NCT05714995. IPD Sharing: NO. Countries: 1. Publications: 0.
Mechanical and Sensorial Training in the Olfactive Rehabilitation of Patients With Total Laryngectomy
ClinicalTrials.gov study NCT07122037. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Smart Olfaction App to Reduce Relapse
ClinicalTrials.gov study NCT07007195. IPD Sharing: NO. 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.