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reaction time

The period of time between the detection of a stimulus at a sensory receptor and the performance of the appropriate response by the effector organ. This delay is caused by the time taken ...

reaction time

reaction time   Reference library

Oxford Dictionary of Biochemistry and Molecular Biology (2 ed.)

Reference type:
Subject Reference
Current Version:
2008
Subject:
Science and technology, Life Sciences
Length:
10 words

... time an alternative name for latent period (def....

reaction time

reaction time n.   Quick reference

A Dictionary of Psychology (4 ed.)

Reference type:
Subject Reference
Current Version:
2015

... time n . The time elapsing between the onset of a stimulus ( 1 ) and a response to it, sometimes broken down into physiological time plus central reaction time . Simple reaction time applies when there is only one possible stimulus requiring only one type of response; choice reaction time (also called complex reaction time ) when there are two or more possible stimuli requiring different responses; and discrimination reaction time when the response depends on the detection of a difference in an objectively measurable perceptual dimension...

reaction time

reaction time   Quick reference

A Dictionary of Biology (8 ed.)

Reference type:
Subject Reference
Current Version:
2019
Subject:
Science and technology, Life Sciences
Length:
67 words

...reaction time ( latent period ) The period of time between the detection of a stimulus at a sensory receptor and the performance of the appropriate response by the effector organ. This delay is caused by the time taken for the impulse to travel across the synapses of adjacent neurons. The reaction time for a reflex response, involving only a single linking synapse, is very...

reaction time

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A Dictionary of Public Health (2 ed.)

Reference type:
Subject Reference
Current Version:
2018

...reaction time The time taken to respond to a neural stimulus. The term usually applies to the response time for sensory stimuli such as the brake lights of the car ahead of a highway driver or a warning signal of trouble on a factory production line. The same term is used to describe reaction to reflexes, but that usage is discouraged. Reaction time varies with age, health status, and training, and is adversely affected by narcotics, sedatives, and alcohol intoxication. ...

reaction time

reaction time   Quick reference

A Dictionary of Geography (6 ed.)

Reference type:
Subject Reference
Current Version:
2023

... time The time between any kind of change and the response it elicits in a system. In geomorphology it is the interval between a disturbance or change in controls and observable morphological change. In hydrology, the bigger a catchment, the longer its reaction time. Harrison (2003) Am. Geophys. Union C22A-01 extends this term to glaciers; but there the reaction time may depend on the glacier/climate history in a non-transparent...

reaction time

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The Oxford Dictionary of Sports Science & Medicine (3 ed.)

Reference type:
Subject Reference
Current Version:
2007
Subject:
Science and technology, Medicine and health
Length:
182 words

...is processed centrally. Reaction times of 14–16-hundredths of a second for acoustic stimuli and 16–18-hundredths of a second for optical stimuli are generally regarded as good. 2 A skill-orientated ability underlying tasks for which there is one stimulus and one response, and for which the subject must react as quickly as possible to a stimulus in a single reaction time situation: for example, a sprint start in swimming. See also choice reaction time , digit symbol substitution test , response time , simple reaction time...

reaction time

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A Dictionary of Ecology (5 ed.)

Reference type:
Subject Reference
Current Version:
2015

... time In geomorphology , the time taken for a system to react to a sustained change in external conditions. Representative reaction times are difficult to define, because of variations in the resistance of systems to change and in the magnitude of the external change (e.g. a sand-bed river channel reacts more readily to change than does a rock-floored channel). See also relaxation time...

reaction time

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A Dictionary of Geology and Earth Sciences (5 ed.)

Reference type:
Subject Reference
Current Version:
2020

... time 1. In geomorphology , the time taken for a system to react to a sustained change in external conditions. Representative reaction times are difficult to define, because of variations both in the resistance of systems to change and in the magnitude of the external change. For example, a sand-bed river channel reacts more readily to change than does a rock-floored channel. See also relaxation time . 2. See corona...

reaction time

reaction time   Quick reference

Food and Fitness: A Dictionary of Diet and Exercise (2 ed.)

Reference type:
Subject Reference
Current Version:
2016

... it takes for the sound to reach the ear), and 16–18 hundredths of a second to respond to optical stimuli. Reaction times can be improved by training, but even well-trained, elite sprinters cannot respond physiologically in less than 10 hundredths of a second without anticipating the signal; in electronically-timed competitions, any starts quicker than this are regarded as false starts. You may assess the speed of your reactions by doing the ruler drop test (sometimes called the stick test). ▪ Get a partner to hold the top of a metre rule with the thumb and...

reaction time

reaction time   Reference library

The Oxford Companion to the Body

Reference type:
Subject Reference
Current Version:
2003
Subject:
Science and technology, Life Sciences
Length:
1,081 words

... time Your hand accidentally touches the hot plate of an oven and is withdrawn immediately. A young child runs out in front of your car and you hammer on the brakes. A lottery ball falls into its position upside down and you have to shout out the correct number as fast as you can to a colleague who is checking off the numbers for your syndicate. All three examples of reaction time are the time it takes to make a movement in response to a sensory stimulus. However, even if we try to respond as fast as possible in each situation, the reaction time is quite...

reduced reaction time

reduced reaction time n.   Quick reference

A Dictionary of Psychology (4 ed.)

Reference type:
Subject Reference
Current Version:
2015

...reaction time n . Another name for central reaction time...

complex reaction time

complex reaction time n.   Quick reference

A Dictionary of Psychology (4 ed.)

Reference type:
Subject Reference
Current Version:
2015

...reaction time n. Another name for choice reaction time...

compound reaction time

compound reaction time n.   Quick reference

A Dictionary of Psychology (4 ed.)

Reference type:
Subject Reference
Current Version:
2015

...reaction time n. Another name for choice reaction time...

abbreviated reaction time

abbreviated reaction time n.   Quick reference

A Dictionary of Psychology (4 ed.)

Reference type:
Subject Reference
Current Version:
2015

...reaction time n. Another name for central reaction time...

simple reaction time

simple reaction time n.   Quick reference

A Dictionary of Psychology (4 ed.)

Reference type:
Subject Reference
Current Version:
2015

...reaction time n . Reaction time in a situation in which there is only one possible stimulus requiring only one type of response. Compare choice reaction time , discrimination reaction time...

motor reaction time

motor reaction time   Quick reference

The Oxford Dictionary of Sports Science & Medicine (3 ed.)

Reference type:
Subject Reference
Current Version:
2007

...reaction time The interval between the first change in electrical activity in a muscle and the initiation of a muscle movement. It is a component of reaction time...

discrimination reaction time

discrimination reaction time   Quick reference

The Oxford Dictionary of Sports Science & Medicine (3 ed.)

Reference type:
Subject Reference
Current Version:
2007

...reaction time The reaction time for a task in which different combinations of different stimuli are presented, with a response being made only if the combination includes a given...

discrimination reaction time

discrimination reaction time n.   Quick reference

A Dictionary of Psychology (4 ed.)

Reference type:
Subject Reference
Current Version:
2015

...reaction time n. Reaction time to differences in an objectively measurable perceptual dimension such as brightness, length, or weight. A common procedure for measuring it involves an observer comparing pairs of visual displays, presented simultaneously, and responding by pressing one of two buttons according to which display appears brighter, longer, heavier, or greater in magnitude on whatever dimension is being examined, the time elapsing between stimulus presentation and key-pressing response being the discrimination reaction time. The three...

half-reaction time

half-reaction time   Quick reference

The Oxford Dictionary of Sports Science & Medicine (3 ed.)

Reference type:
Subject Reference
Current Version:
2007

...reaction time The time taken for a chemical reaction to be half completed. For example, a half-reaction time of 30 s for restoration of phosphagen stores following an anaerobic activity, means that in 30 s half the total ATP stores and PC stores are...

choice reaction time

choice reaction time n.   Quick reference

A Dictionary of Psychology (4 ed.)

Reference type:
Subject Reference
Current Version:
2015

... or compound reaction time . See also flanker compatibility effect , Hick’s law , processing speed , Simon effect . Compare discrimination reaction time , simple reaction time . CRT ...

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