Abstract
Visual hallucinations occur in approximately 30% of acutely hospitalized chronic patients with schizophrenia (Small et al. 1966). Two lines of evidence suggest that the visual field distribution of visual hallucinations in schizophrenia may be of interest. First, visual hallucinations are more frequently perceived in the visual hemifield contralateral to the side of the headache in migraine (Haas 1982) and contralateral to the seizure focus in epilepsy having an occipital (Lishman 1978) or parietal (Lance 1976) lobe focus. Second, stimulation of the visual association cortex produces contralateral visual field hallucinations in neurosurgical patients (Penfield and Perot 1963). We now report a study of the spatial location of visual hallucinations in patients with chronic schizophrenia.
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