Background Rotation
Background Rotation - Related Videos
01:18
Thermodynamic Background
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2026
The law of mass action states that "the rate of a chemical reaction is directly proportional to the product of the molar concentrations of the reactants." It means that the more 'active mass' or 'concentration' of the reactants present, the faster the reaction will proceed.In a chemical reaction, there are forward and reverse reactions. The forward reaction is the process where the reactants combine to form products. The reverse reaction is the process where the products break down to form the...
05:56
Mental Rotation
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2023
Source: Laboratory of Jonathan Flombaum—Johns Hopkins University Visual mental imagery refers to the ability to conjure images in one’s mind’s eye. This allows people to process visual material above and beyond the constraints of a current point-of-view; for example, a person could imagine, using their mind’s eye, how something might look in a different color, or what it would look like if it were made from a different material or rotated and seen from a different perspective. Mental imagery...
15:04
Rejection of Fluorescence Background in Resonance and Spontaneous Raman Microspectroscopy
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Cited by 5 •
2011
We discuss the construction and operation of a complex nonlinear optical system that uses ultrafast all-optical switching to isolate Raman from fluorescence signals. Using this system we are able to successfully separate Raman and fluorescence signals utilizing pulse energies and average powers that remain biologically safe.
07:48
Rotational Inertia
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2023
Source: Nicholas Timmons, Asantha Cooray, PhD, Department of Physics & Astronomy, School of Physical Sciences, University of California, Irvine, CA Inertia is the resistance of an object to being accelerated. In linear kinematics, this concept is directly related to the mass of an object. The more massive an object, the more force is required to accelerate that object. This is seen directly in Newton's second law, which states that force is equal to mass times acceleration. For rotation,...
02:27
Background and Environment Affect Phenotype
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2021
Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype. An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
FAQs
The changing visual pattern provides optic flow, a structured pattern of motion across the visual field. The brain evaluates that signal alongside vestibular information about bodily motion and proprioceptive information about body position. When these sources do not agree, the comparison becomes especially informative for studying how visual motion contributes to judgments of orientation and self-location.
Vection emerges when visual motion suggests that the observer is moving although the body is not. Background rotation is useful because it creates a controlled mismatch between visual evidence and signals from the vestibular and proprioceptive systems. Studying that mismatch helps psychologists examine how the brain resolves competing cues when constructing self-motion and orientation judgments.
Background rotation lets investigators separate visual contributions from bodily contributions without necessarily moving the participant. Comparing the rotating scene with the observer’s stationary body provides a way to examine cue conflict rather than treating perception as a response to visual input alone. This distinction is important for interpreting changes in self-location, orientation, or balance-related responses.
An experiment can keep the observer physically stationary while presenting a scene that turns around them. Researchers then examine whether the visual change is associated with vection, altered spatial orientation, or postural responses. The manipulation is valuable because it links a controlled visual event to perceptual and behavioral outcomes without requiring the body itself to rotate.
Researchers can use the manipulation to study several outcomes at once: perceived self-motion, spatial orientation, postural responses, and the effects of conflict between visual and bodily cues. These outcomes help connect subjective experience with orientation and balance-related behavior, making the paradigm relevant to broader research on how people remain located and stable in space.
In virtual-environment research, rotating visual scenes provide a way to investigate how simulated motion influences perception when bodily cues may differ. The same logic supports navigation studies and balance assessment, where researchers need to understand responses to changing visual orientation. Thus, the paradigm connects laboratory motion-perception research with practical questions about spatial behavior.