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).
Voices are the most common type of hallucination in schizophrenia. Many people with the disorder hear voices. The voices may talk to the person about his or her behavior, order the person to do things, or warn the person of danger.
There are likely to be other possible causes, so ask your doctor about your symptoms. 1  Some of the more common possible causes of hallucinations include:  High fever - A high fever, especially in children, can evoke hallucinations, consciousness changes, or dream-like states that resemble hallucinogenic states.