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Galton hypothesized that differences in intelligence would be reflected in variation of sensory discrimination and speed of response to stimuli, and he built various machines to test different measures of this, including RT to visual and auditory stimuli. His tests involved a selection of over 10,000 men, women and children from the London public.
The speed of the rotarod is mechanically driven, and may either be held constant, or accelerated. [3] A human analog to rotarod test might be treadmill running. Hamster, gerbil, and mouse owners can observe the principle in action when an animal climbs on the outside of its wheel, instead of inside of it. In the rotarod test, however, the ...
The open field test can be used to assess memory by evaluating the ability of the animal to recognize a stimulus or object. Another animal test that is used to assess memory using that same concept is the novel object recognition test. [6]
The main strength of the tail suspension test is its predictive validity– performance on the test can be altered by drugs that improve depressive symptoms in people. Specifically, if antidepressant agents are administered before the test, the animal will struggle for a longer period of time than if not and exhibit more escape behaviors. [1]
A continuous performance task, continuous performance test, or CPT, is any of several kinds of neuropsychological test that measures a person's sustained and selective attention. Sustained attention is the ability to maintain a consistent focus on some continuous activity or stimuli , and is associated with impulsivity .
Other studies have proposed that ultrasonic vocalizations are by-products of a rat’s physiological response to temperature (for example, helping to return venous blood to the rat’s heart). However, it has now been widely accepted that rats emit ultrasonic vocalizations as social signals. [ 2 ]
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Nerve impulses are extremely slow compared to the speed of electricity, where the electric field can propagate with a speed on the order of 50–99% of the speed of light; however, it is very fast compared to the speed of blood flow, with some myelinated neurons conducting at speeds up to 120 m/s (432 km/h or 275 mph) [citation needed].