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.
Hallucinations (the internal mental perception of something that occurs in the absence of a real physical external stimulus) are cardinal symptoms of various types of psychoses and can be features of diseases like Schizophrenia, Bipolar Disorder, and other disorders.