Stimulation spurs an organism to act. It can also be any specific event that causes someone to do something.

Have you ever had a teacher who made you excited about a subject you didn't like before, causing you to study harder and learn more? That teacher must've provided stimulation: through the teacher, you were motivated to give more effort to the class. Like a stimulant, stimulation causes things to happen. A doctor hitting your knee is a type of stimulation that makes your leg jerk up. In zoos, animals are provided with food-based stimulation to make them exercise.

Definitions of stimulation
  1. noun
    the act of arousing an organism to action
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    galvanisation, galvanization
    stimulation that arouses a person to lively action
    type of:
    arousal, rousing
    the act of arousing
  2. noun
    any stimulating information or event; acts to arouse action
    synonyms: input, stimulant, stimulus
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    elicitation, evocation, induction
    stimulation that calls up (draws forth) a particular class of behaviors
    the sudden stimulation provided by strong drink (or certain drugs)
    something causing excitement or stimulating interest
    negative stimulation, turnoff
    something causing antagonism or loss of interest
    conditioned stimulus
    the stimulus that is the occasion for a conditioned response
    reinforcement, reinforcer, reinforcing stimulus
    (psychology) a stimulus that strengthens or weakens the behavior that produced it
    cue, discriminative stimulus
    a stimulus that provides information about what to do
    positive stimulus
    a stimulus with desirable consequences
    negative stimulus
    a stimulus with undesirable consequences
    positive reinforcer, positive reinforcing stimulus
    a reinforcing stimulus that serves to increase the likelihood of the response that produces it
    negative reinforcer, negative reinforcing stimulus
    a reinforcing stimulus whose removal serves to decrease the likelihood of the response that produced it
    bonus, fillip
    anything that tends to arouse
    delight, joy, pleasure
    something or someone that provides a source of happiness
    annoyance, bother, botheration, infliction, pain, pain in the ass, pain in the neck
    something or someone that causes trouble; a source of unhappiness
    aversive stimulus
    any negative stimulus to which an organism will learn to make a response that avoids it
    concern, headache, vexation, worry
    something or someone that causes anxiety; a source of unhappiness
    grief, sorrow
    something that causes great unhappiness
    type of:
    knowledge acquired through study or experience or instruction
  3. noun
    (physiology) the effect of a stimulus (on nerves or organs etc.)
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    stimulation of activity in an organism or chemical
    galvanisation, galvanization
    stimulation with a galvanic current
    activation by an inner spirit or force or principle
    type of:
    action, activity, natural action, natural process
    a process existing in or produced by nature (rather than by the intent of human beings)
  4. noun
    mutual sexual fondling prior to sexual intercourse
    synonyms: arousal
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    caressing, cuddling, fondling, hugging, kissing, necking, petting, smooching, snuggling
    affectionate play (or foreplay without contact with the genital organs)
    (British informal) cuddle and kiss
    type of:
    sex, sex activity, sexual activity, sexual practice
    activities associated with sexual intercourse
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