Aleman and Laroi's definition of hallucinations

   In 2008 the neuroscientists André Aleman (b. 1975) and Frank Laroi defined hallucinations as follows: "A hallucination can be defined as a conscious sensory experience that occurs in the absence of corresponding external stimulation of the relevant sensory organ and has a sufficient sense of reality to resemble a veridical perception. In addition, the subject does not feel he or she has direct and voluntary control over the experience."

   References

   Aleman, A., Laroi, F. (2008). Hallucinations. The science of idiosyncratic perception.New York, NY: American Psychological Association.