Charles Bonnet syndrome

complex visual hallucinations without delusions or the loss of insightful cognition, typically seen in older adults who have severe visual impairment. Such hallucinations are usually nonthreatening and often pleasant and are not indicative of mental illness or psychological disorder. Also called Bonnet syndrome. [Charles Bonnet (1720–1793), Swiss naturalist and philosopher]

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Psychology term of the day

May 9th 2024

illumination unit

formerly, the amount of light produced by one foot-candle: now replaced by the lux.