Spherical Treadmill
Spherical Treadmill - Related Videos
01:23
Spherical Coordinates
0 Views •
2023
Spherical coordinate systems are preferred over Cartesian, polar, or cylindrical coordinates for systems with spherical symmetry. For example, to describe the surface of a sphere, Cartesian coordinates require all three coordinates. On the other hand, the spherical coordinate system requires only one parameter: the sphere's radius. As a result, the complicated mathematical calculations become simple. Spherical coordinates are used in science and engineering applications like electric and...
08:04
Using a Split-belt Treadmill to Evaluate Generalization of Human Locomotor Adaptation
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Cited by 14 •
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We describe a protocol for investigating human locomotor adaptation using the split-belt treadmill, which has two belts that can drive each leg at a different speed. We specifically focus on a paradigm designed to test the generalization of adapted locomotor patterns to different walking contexts (e.g., gait speeds, walking environments).
09:25
The Treadmill Fatigue Test: A Simple, High-throughput Assay of Fatigue-like Behavior for the Mouse
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Cited by 93 •
2016
Fatigue is a common, undertreated and frequently poorly-understood symptom in many diseases and disorders. New preclinical assays of fatigue may help to improve current understanding and future treatment of fatigue. To that end, the current protocol provides a novel means of measuring fatigue-like behavior in the mouse.
01:18
Actin Treadmilling
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2023
Actin filaments undergo polymerization and depolymerization from either end. The polymerization and depolymerization rates depend on the cytosolic concentration of free G-actins. The polymerization rate is generally higher at the plus or barbed end, while the depolymerization rate is higher at the minus or pointed end. At a steady state, critical concentration describes the concentration of free G-actin monomers at which the polymerization rate at the plus end is equal to that of the...
10:52
Reconstitution of Basic Mitotic Spindles in Spherical Emulsion Droplets
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Cited by 19 •
2016
The assembly and positioning of the mitotic spindle depend on the combined forces generated by microtubule dynamics, motor proteins and cross-linkers. Here we present our recently developed methods in which the geometrical confinement of spherical emulsion droplets is used for the bottom-up reconstitution of basic mitotic spindles.
FAQs
As an animal walks or runs, forces produced by its legs rotate the lightweight sphere. Optical sensors or cameras detect that movement and provide the basis for reconstructing locomotion and orientation. This links the animal’s physical actions to measurable behavioral variables, allowing researchers to examine how movement changes during an experiment.
Optical sensors and cameras convert sphere movement into behavioral measurements. Their recordings support reconstruction of locomotion, orientation, and activity patterns rather than relying only on direct visual observation. These measurements help identify how an animal responds to experimental conditions and connect changes in sensory processing with changes in motor behavior.
Researchers can present controlled visual, olfactory, or other sensory stimuli while monitoring movement on the apparatus. Comparing locomotion, orientation, or activity across these conditions helps reveal how animals integrate sensory information during behavior. The approach is especially useful when the goal is to relate a specific stimulus to navigation, motor control, or behavioral responses.
The animal is maintained in a controlled position above a freely rotating ball, while its walking or running moves the sphere. Optical sensors or cameras record the resulting rotation, and researchers apply defined sensory conditions during observation. The recorded movement is then used to reconstruct locomotion, orientation, and responses associated with the experimental stimulus.
Data from a spherical treadmill can describe locomotion, orientation, and activity patterns. These measurements allow researchers to evaluate how an animal moves, changes direction, or responds behaviorally while sensory conditions are controlled. Because movement is recorded during stimulation, the apparatus can connect observable actions with navigation and sensory integration rather than measuring activity in isolation.
The apparatus combines controlled sensory stimulation with precise movement tracking while the animal remains in a defined position. This makes it possible to study navigation, motor control, sensory integration, and activity patterns in insects and other small animals. It also supports research linking neural and sensory processes to the behavioral outcomes produced during locomotion.