Tilt Table Protocol
Tilt Table Protocol - Related Videos
02:32
Generation of Tilted Amygdala Slices from a Mouse Brain
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2025
The video demonstrates the generation of tilted amygdala slices from a mouse brain. The brain is positioned at an angle on the vibratome specimen stage to obtain slices containing the amygdala and axons from the medial prefrontal cortex that form synaptic connections with the amygdala. The brain slices are maintained at the physiological temperature to preserve the tissue for further experiments.
14:09
Tilt Testing with Combined Lower Body Negative Pressure: a "Gold Standard" for Measuring Orthostatic Tolerance
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Cited by 31 •
2013
We describe a "gold standard" for evaluating orthostatic tolerance (OT) using tilt testing with combined lower body negative pressure (LBNP). This can be combined with non-invasive evaluations of cardiovascular reflex control. Normal and abnormal responses are defined.
01:12
Flow Table Test
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2024
The flow table test is an established method used to assess the workability of concrete, particularly useful for evaluating highly flowable concrete mixes. This test employs an apparatus that consists of a wooden board topped with a steel plate, collectively weighing 35 pounds. The board is connected to a base via a hinge and measures 27.6 inches on each side. Concrete is placed within a truncated cone mold that is 8 inches high with an 8-inch base diameter and a 5-inch top diameter. The...
12:10
Single Particle Electron Microscopy Reconstruction of the Exosome Complex Using the Random Conical Tilt Method
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Cited by 35 •
2011
This article describes a standard method to get a three-dimensional (3D) reconstruction of biological macromolecules using negative staining electron microscopy (EM). In this protocol, we explain how to get the 3D structure of the Saccharomyces cerevisiae exosome complex at medium resolution using the random conical tilt reconstruction method (RCT).
01:22
Life Tables
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2025
A life table is a statistical tool that summarizes the mortality and survival patterns of a population, providing detailed insights into the likelihood of survival or death across different age intervals within a cohort. By organizing data on survival probabilities and mortality rates, life tables offer a clear snapshot of population dynamics over time. They are extensively used in demography, public health, actuarial science, and ecology to analyze life expectancy, design health interventions,...
FAQs
An abnormal orthostatic response can indicate that cardiovascular and autonomic regulation is not adequately adapting to the change from lying to upright posture. Researchers examine the combined pattern of blood pressure, heart rate, and symptoms rather than relying on one observation alone. This helps characterize impaired blood-flow control associated with syncope, orthostatic intolerance, and related neurological conditions.
A gradual, controlled tilt creates a standardized postural challenge while allowing physiological responses to be observed as they develop. Comparing measurements during the resting position with those obtained during upright tilt helps reveal how the cardiovascular and autonomic systems compensate for the change. Standardization also makes responses more consistent across clinical evaluations and research studies.
Cerebral responses provide an additional view of how changes in posture affect brain-body regulation. When these responses are monitored alongside blood pressure, heart rate, and symptoms, investigators can relate cardiovascular changes to possible alterations in cerebral responses. This broader perspective is especially relevant to neuroscience studies of fainting, impaired blood-flow control, and autonomic regulation.
The participant first rests on a motorized table while baseline cardiovascular observations are obtained. The table then moves gradually from a lying position toward an upright tilt, with blood pressure, heart rate, and symptoms monitored throughout the positional change. If the study includes them, cerebral responses are recorded as an added measure of brain-body response.
Blood pressure and heart rate describe cardiovascular changes, while reported symptoms indicate how the participant experiences the positional challenge. Cerebral responses may supply complementary information about brain-related effects. Considering these observations together gives a more complete picture of autonomic compensation than any single measurement and supports characterization of the response pattern.
The protocol is useful when investigators or clinicians need to characterize responses related to syncope, orthostatic intolerance, or other neurological conditions involving autonomic regulation. In neuroscience, it offers a standardized way to study brain-body interactions and the mechanisms associated with fainting. Its controlled positional challenge also supports comparison of physiological compensation across assessments.