A sensory experience that occurs without external stimulation, arising from within the individual’s mind. These perceptions can manifest across any of the senses, including auditory, visual, olfactory, gustatory, and tactile modalities. For instance, an individual might hear voices when no one is speaking or see objects that are not present. These experiences are distinct from illusions, which involve misinterpretations of actual sensory stimuli.
Understanding these internally generated perceptions is crucial within the field of psychology. The presence of such experiences can indicate underlying neurological or psychiatric conditions. Historically, investigations into these phenomena have contributed significantly to the development of diagnostic criteria and treatment approaches for conditions like schizophrenia and other psychotic disorders. Recognizing the specific characteristics of these experiences aids in differential diagnosis and the implementation of appropriate interventions.
