reaction time


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reaction

 [re-ak´shun]
1. opposite action or counteraction; the response of a part to stimulation.
2. the phenomena caused by the action of chemical agents; a chemical process in which one substance is transformed into another substance or substances.
3. in psychology, the mental or emotional state that develops in any particular situation.
4. the specific cellular effect produced by foreign matter, as in testing for allergies. For specific reactions, see under the name, such as pirquet's reaction.
reaction of degeneration the reaction to electrical stimulation of muscles whose nerves have degenerated, consisting of loss of response to a faradic stimulation in a muscle, and to galvanic and faradic stimulation in the nerve.
reaction time the time elapsing between the application of a stimulus and the resulting reaction.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

re·ac·tion time

the interval between the presentation of a stimulus and the responsive reaction to it.
Farlex Partner Medical Dictionary © Farlex 2012

reaction time

n.
The interval of time between application of a stimulus and detection of a response.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

re·ac·tion time

(rē-ak'shŭn tīm)
Interval between presentation of a stimulus and the beginning of an individual's response.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

reaction time

The interval between the application of a stimulus and the first sign of a response.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

reaction time

see LATENT PERIOD (1).
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

reaction time 

The time interval between the onset of a stimulus and the response of a subject. Visual stimulations with a flash of light give rise to reaction times varying between 130 and 180 ms. This figure diminishes significantly with age.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann

re·ac·tion time

(rē-ak'shŭn tīm)
Interval between presentation of a stimulus and responsive reaction to it.
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
Study of effect of cold pressor test on reaction time among first professional medical students.
Even the sound of a ringing mobile phone has a negative influence on the complex reaction time [16].
In terms of reaction time, the individual and the combined effects of temperature and lighting level on all types of reaction time were statistically significant (P < 0.001), except for the individual effect of lighting level on two-sound selective RT (P = 0.065).
The present study was developed to determine the effect of vibration on seated occupant reaction time and drowsiness level.
Thus, a study question was developed to evaluate the simple reaction time in response to auditory stimuli in the rickshaw drivers.
Longer reaction time and higher BMI in females could be attributed to fluid and salt retention due to female sex hormones affecting sensorimotor coordination.
Besides the TTC, the reaction time R in (2) has a significant influence on the resulting values.
Four types of data, EEG, ECG, EOG (Electrooculogram), and the reaction time, were collected from the experiments.
This equipment measures visual or auditory simple (one sound, one light) reaction time and visual multiple-choice (one of two light) reaction time.
In the present paper, we propose a suitable lighting pattern by which to improve the performance of a driver's pedestrian perception in order to shorten the driver's reaction time. Using the developed evaluation method and reasonable parameter values derived from preliminary experiments, we attempt to assess the influence of visual characteristics on a reaction-time-dependent task, such as pedestrian perception at night.
Although there are numerous methods to synthesize thiocyanate from aromatics, the majority of methods require harsh operational conditions, including toxic solvents, long reaction time, separation and purification of the products.