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The information contained on this page is provided as general health information and is not intended to substitute as medical advice and direction from your physician or health care provider. Please direct any questions related to your health care provider. In an emergency, call 9-1-1 or go to the nearest emergency center.


Stimulus

Definition

A stimulus is anything that can trigger a physical or behavioral change. The plural of stimulus is stimuli.

Stimuli can be external or internal.

An example of external stimuli:

  • Your body responding to a medicine

An example of internal stimuli:

  • Your vital signs changing due to a change in the body

Stimuli include:

  • Irritants
  • Sights
  • Smells
  • Sounds
  • Temperature changes

References

Taber's Cyclopedic Medical Dictionary, 23rd ed. F.A. Davis Company; 2017. www.tabers.com/tabersonline/. Accessed January 26, 2017.