ArticlePsychogeriatrics : the official journal of the Japanese Psychogeriatric Society2022
Visual illusions in Parkinson's disease: an interview survey of symptomatology.
Article in Psychogeriatrics : the official journal of the Japanese Psychogeriatric Society, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 12 citations in OpenAlex.
- Visual Hallucinations in Serotonergic Psychedelics and Lewy Body Diseases.Schizophrenia bulletin · 2025Review
- The 7 Muses of Neuro-Creative Cycle: How some patients with Parkinson's disease can unleash latent creativity.AIMS neuroscience · 2025Article
- Exploring the Spectrum of Visual Illusions and Other Minor Hallucinations in Patients with Parkinson's Disease in Lithuania.Medicina (Kaunas, Lithuania) · 2024Article
- Parkinson disease psychosis: from phenomenology to neurobiological mechanisms.Nature reviews. Neurology · 2024Review
- Diplopia in Movement Disorders: A Systematic Review of the Literature.Journal of personalized medicine · 2024Review
- Susceptibility to geometrical visual illusions in Parkinson's disorder.Frontiers in psychology · 2023Article
Corrections and comments
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Authors and funding
7 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundSeveral types of visual illusions can occur in Parkinson's disease (PD). However, the prevalence and types of specific illusions experienced by patients with PD remain unclear. This study aimed to investigate the types of illusions.
methodsA questionnaire of visual illusions was developed through a literature review in consultation with clinicians and neurologists. Based on the questionnaire, 40 consecutive patients with PD were asked a series of Yes/No questions regarding 20 types of visual illusions since the onset of PD. If participants answered 'Yes', they were then asked to detail their experience(s).
resultsIn total, 30 patients with PD had experienced visual illusions since disease onset; among them, 25 were still experiencing them at the time of the study. The most commonly observed illusion types were dysmorphopsia, complex visual illusions, metachromatopsia, and diplopia. Other observed illusions included textural illusions, macropsia, micropsia, teleopsia, pelopsia, kinetopsia, akinetopsia, Zeitraffer/Zeitlupen phenomena, tilt illusion, upside-down illusion, and palinopsia. Additionally, aberrant perception of surface orientation (inclination) was reported, which is yet to be reported in association with any disease. Visual illusions had detrimental effects on the patients' daily lives in some cases.
conclusionsSystematic interviews regarding the incidence and details of visual illusions experienced by patients with PD could offer important information regarding their quality of life.
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