Stimulus Definition In Biology

Though it can be a synonym for stimulant they are not always used interchangeably.

Stimulus definition in biology. The ability to respond to a stimulus is called irritability and is a necessary condition for life. The temperature is the stimulus and the individual then protects themselves. 3 that which can evoke a response or has an influence on a system to act.

The ability of an organism or organ to detect external stimuli so that an appropriate reaction can be made is called sensitivity. From longman dictionary of contemporary english. A biologic stimulus is any external change in the environment that can be detected by an organism.

Something that causes part of the body to react. A stimulant is often a chemical or drug that increases activity think caffeine. Conditioned stimuli begin as neutral stimuli that do not illicit a.

The money you spend on your membership is a stimulus for hitting the gym. Simply put a conditioned stimulus makes an organism react to something because it is associated with something else. Stimulus in biology topic.

Something that causes growth or activity. In financial and economic contexts a stimulus may be an incentive. In physiology a stimulus is a detectable change in the physical or chemical structure of an organism s internal or external environment.

An influence that acts usually from outside the body to partly change bodily activity as by exciting a receptor or sense organ light heat and sound are common physical stimuli. A conditioned stimulus is a substitute stimulus that triggers the same response in an organism as an unconditioned stimulus. Stim u lus ˈstɪmjələs noun plural stimuli laɪ 1 countable usually singular uncountable help.