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1,355 results for “manipulation”
Data from: Females manipulate behavior of caring males via prenatal maternal effects
In species with biparental care, there is sexual conflict as each parent is under selection to minimize its personal effort by shifting as much as possible of the workload over to the other parent. Most theoretical and empirical work on the resolution of this conflict has focused on strategies used by both parents, such as negotiation. However, because females produce the eggs, this might afford females with an ability to manipulate male behavior via maternal effects that alter offspring phenotypes. To test this hypothesis, we manipulated the prenatal conditions (i.e., presence or absence of the male), performed a cross-fostering experiment, and monitored the subsequent effects of prenatal conditions on offspring and parental performance in the burying beetle Nicrophorus vespilloides. We found that offspring were smaller at hatching when females laid eggs in presence of a male, suggesting that females invest less in eggs when expecting male assistance. Furthermore, broods laid in the presence of a male gained more weight during parental care, and they did so at the expense of male weight gain. Contrary to our expectations, males cared less for broods laid in the presence of a male. Our results provide experimental evidence that females can alter male behavior during breeding by adjusting maternal effects according to prenatal conditions. However, rather than increasing the male's parental effort, females appeared to suppress the male's food consumption, thereby leaving more food for their brood.
Data from: Imaging and manipulating pituitary function in the awake mouse
Extensive efforts have been made to explore how the activities of multiple brain cells combine to alter physiology through imaging and cell-specific manipulation in different animal models. However, the temporal regulation of peripheral organs by the neuroendocrine factors released by the brain is poorly understood. We have established a suite of adaptable methodologies to interrogate in vivo the relationship of hypothalamic regulation with the secretory output of the pituitary gland, which has complex functional networks of multiple cell types intermingled with the vasculature. These allow imaging and optogenetic manipulation of cell activities in the pituitary gland in awake mouse models, in which both neuronal regulatory activity and hormonal output are preserved. This methodology is now readily applicable for longitudinal studies of short-lived events (e.g. calcium signals controlling hormone exocytosis) and slowly-evolving processes such as tissue remodelling in health and disease over a period of days to weeks.
Figure 1 from: Messas YF, Sobczak JF, Vasconcellos-Neto J (2017) An alternative host of Hymenoepimecis japi (Hymenoptera, Ichneumonidae) on a novel family (Araneae, Araneidae), with notes on behavioral manipulations. Journal of Hymenoptera Research 60: 111-118. https://doi.org/10.3897/jhr.60.14817
Figure 1 - A Mecynogea biggiba resting on its web hub B Typical dome-shaped web of M. biggiba.
A 3UPS/S Spherical Parallel Manipulator Designed for Robot Assisted Hand Rehabilitation after Stroke
<p><span>Hand dysfunction is a common symptom in stroke patients. This paper presents a r<span>obot</span>ic device which assists rehabilitation process in order to reduce the need of physical therapy, i.e., a <span>3UPS/S parallel robot</span>ic device is employed for repetitive robot-assisted rehabilitation. Euler angle representation was used to solve the robot's inverse kinematics. The robot's joint space and rotational workspace are determined for two scenarios. In the first scenario, the workspace is obtained considering the actuator’s stroke limitations, while in the second scenario, the workspace is determined by adding a second condition, i.e. the range of motion of the spherical joints. Singularity analysis is performed using geometric algebra approach. The robot was manufactured using additive manufacturing technology. The solution of the inverse kinematic problem is employed to control the robot. The robot can perform full range of motion during wrist ulnar deviation and radial deviation motions, with the exception of limited wrist flexion and extension motions. The robot has singular configurations within its workspace. Although the spherical joints have roles in reducing the workspace, the primary causes are actuator selection, radiuses of base and moving platforms and the length of the central leg. These factors can be considered to improve the workspace. Singularity can be avoided by carefully selecting the rotation of the moving platform about Z-axis and avoiding same leg lengths.</span></p>
Experimental manipulation of selfish genetic elements links genes to microbial community function
<p>Microbial communities underpin earth’s biological and biogeochemical processes, but their complexity hampers understanding. Here we draw upon predictions from the theory of selfish genetic elements (SGEs), combined with approaches from experimental evolution, comparative metagenomics and biochemistry, and show how naturally occurring SGEs can be used to manipulate genes that underpin community function. Communities comprising hundreds of bacterial genera established from garden compost were propagated with bi-weekly transfer for one year in nitrogen-limited minimal medium with cellulose (paper) as sole carbon source. At each transfer, SGEs from one set of independent communities were collected, pooled and redistributed among this same set of communities (horizontal treatment). A control was included in which SGEs never moved beyond the community in which they were originally present (vertical treatment). SGEs along with genes of ecological relevance were rapidly amplified across horizontal communities and their dynamics tracked. Enrichment of genes implicated in nitrogen metabolism, and particularly ammonification, led to biochemical assays that showed a significant functional difference between communities subject to horizontal versus vertical treatments. This simple experimental strategy offers a powerful new approach for unravelling dynamical processes underpinning microbial community function.</p>
Figure 4 from: Dupont S, Price B, Blagoderov V (2015) IMp: The customizable LEGO® Pinned Insect Manipulator. ZooKeys 481: 131-138. https://doi.org/10.3897/zookeys.481.8788
Figure 4 - The IMp models being used with the micro-IMp holding a specimen positioned for viewing.
The impacts of whole-lake acidification and eutrophication on the accumulation of lead in sediments from manipulated lakes in the Experimental Lakes Area (IISD-ELA)
<p>Measured elemental Pb concentrations, radioisotopic activity profiles, calculated dates and mass accumulation rates</p> <p> </p> <p>Original Publication: Baud, A., Smol, J.P., Meyer-Jacob, C., Paterson, M., Francus, P., Gregory-Eaves, I., 2022. The impacts of whole-lake acidification and eutrophication on the accumulation of lead in sediments from manipulated lakes in the Experimental Lakes Area (IISD-ELA). Environ. Pollut., 120829. https://doi.org/10.1016/j.envpol.2022.120829</p>
Full Data Set for the Paper: An Evaluation of Open Source Trajectory Planners for Robotic Manipulators with Focus on Human-Robot Collaboration
<p>This data sets contain the full evaluation data for the paper "An Evaluation of Open Source Trajectory Planners for Robotic Manipulators with Focus on Human-Robot Collaboration".</p>
Effectiveness of Kinesiotaping and Manipulation Therapies in Drooling Management Among Children With Oral Dysphagia
ClinicalTrials.gov study NCT04266626. IPD Sharing: NO. Countries: 1. Publications: 0.
Effects of the T12-L1 Vertebral Manipulation on Body Temperature, Arterial Tension and Cardiac Frequency
ClinicalTrials.gov study NCT05315622. IPD Sharing: NO. Countries: 1. Publications: 0.
Exercise Substrate Utilisation and Endurance Performance Following Short-term Manipulation of Dietary Fat Intake
ClinicalTrials.gov study NCT02568592. IPD Sharing: NO. Countries: 1. Publications: 0.
Virtual Reality Viewing of Unaltered Streetscape Versus Digitally Manipulated Opposite Streetscape to Assess Psychosocial Response in Participants
ClinicalTrials.gov study NCT07216534. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Physiological Manipulation and Surface Electrical Stimulation in Post Stroke Dysphagia Patients
ClinicalTrials.gov study NCT06840938. IPD Sharing: UNDECIDED. Countries: 1. Publications: 0.
Influence of Flexion Distraction Manipulation on Measures of Performance and Postural Control
ClinicalTrials.gov study NCT06965920. IPD Sharing: UNDECIDED. Countries: 1. Publications: 0.
Study of Metformin Plus Oligomeric Procyanidin Complex for Pharmacologic Manipulation of AGE (Advanced Glycation Endproducts) Levels in Prostate Cancer Patients
ClinicalTrials.gov study NCT03465345. IPD Sharing: NO. Countries: 1. Publications: 0.
Uterine Manipulation During Minimally Invasive Surgery for Early Stage Endometrial Cancer
ClinicalTrials.gov study NCT04586959. IPD Sharing: NO. Countries: 1. Publications: 0.
Duration of Spinal Manipulation Effects as Influenced by Orthotics
ClinicalTrials.gov study NCT01704807. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Immediate Effect of Cervical and Sacroiliac Manipulation on the Autonomic Nervous System and Balance
ClinicalTrials.gov study NCT06642688. IPD Sharing: NO. Countries: 1. Publications: 0.
Application of Elbow Manipulation in Archers
ClinicalTrials.gov study NCT06826300. IPD Sharing: NO. Countries: 1. Publications: 0.
Hyperbaric Oxygen and Manipulative Therapies to Regain Function Post Stroke
ClinicalTrials.gov study NCT03352232. 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.