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The stimulus is the external or internal object or set of objects which is intended to generate either an Overt Response or Covert Response in the subject as part of a Behavioral Experimental Paradigm Condition.

Definition Source

JT and AL


Parent Entity

BFO: Object Aggregate


In an auditory oddball paradigm, the role of the stimulus is usually filled by the auditory tone or cluster of tones that are presented to the subject.

Logical Restrictions

An experimental Behavioral Experimental Paradigm Condition requires something that plays the role of a stimulus.


A stimulus is categorized as either an Explicit Stimulus or Implicit Stimulus. An Explicit Stimulus is characterized by its Stimulus Modality.

Original suggestions included: "The occurrent or continuant (i.e., the thingie) which elicits activity from the subject in the experiment". Its suggested definition in other fields includes:

  • Anything that may have an impact or influence on a system
  • (physiology) Something external that elicits or influences a physiological or psychological activity or response.
  • (psychology) Anything effectively impinging upon any of the sensory apparatuses of a living organism, including physical phenomena both internal and external to the body.
  • Anything that induces a person to take action

Created Date



JT and AL

Curation Status

curation complete Dec 2010


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