Excited audience members in Australia. Stimulation or sensory excitation is the action of various agents or forms of energy (stimuli) on receptors that generate impulses that travel through nerves to the brain (afferents).
Auditory Hallucinations. Theses auditory, or aural, hallucinations are the most common type of schizophrenia hallucination. They are a disruption of the normal hearing process, involving hearing annoyances such as clicks, hums, or screeches, and can be as complex as hearing complete voices.
In schizophrenia, the hallucination may be an auditory input also derived from demons, and the patient may hear these inputs not audible to the observer. The hallucination in schizophrenia may therefore be an illusionâa false interpretation of a real sensory image formed by demons.