- plural form of stimulus
Stimuli are things that provoke a response or activity, or that cause organs or tissues in the body to react in a certain way.
Bright lights that make your eyes squint shut are an example of visual stimuli.
- Stimuli comprise chemical, mechanical, thermal, photic and electrical changes in the environment of the organism.
- The threshold-value of the stimuli adequate for the various senses may be extraordinarily lowered.
- It is easy to realize how such a rhythm can be modified by the reception of stimuli, and can consequently serve as the basis for the movement of the stimulated organ.
- The second is Fechner's method; it consists of recording the changes in feeling-tone produced in a subject by bringing him in contact with a series of conditions, objects or stimuli graduated according to a scientific plan and presented singly in pairs or in groups.
- When muscle that has remained inactive for some time is excited by a series of single and equal stimuli succeeding at intervals too prolonged to cause summation the succeeding contractions exhibit progressive increase up to a certain degree.