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.
1 Halluciations, and more frequently delusions, are a prominent and common part of the illness. 2  Disorganized schizophrenia (Hebephrenic Schizophrenia) - In this case the person is verbally incoherent and may have moods and emotions that are not appropriate to the situation.