A shrunken world – micropsia after a right occipito-parietal ischemic stroke. Issue 5 (3rd September 2019)

• Record Type: Journal Article
• Authors: Van Den Berg, Nils S.; Huitema, Rients B.; Spikman, Jacoba M.; Van Laar, Peter Jan; De Haan, Edward H.F.
• Is Part Of: Neurocase. Volume 25:Issue 5(2019)
• Page Start: 202
• Page End: 208
• Publication Date: 2019-09-03
• Subjects: Micropsia -- metamorphopsia -- visual perceptual impairment -- occipito-parietal infarction -- neuropsychology; Neurology -- Periodicals; Neuropsychology -- Case Report; Mental Disorders -- Case Report; Nervous System Diseases -- Case Report; 616.8
• DOI: 10.1080/13554794.2019.1656751
• Languages: English
• ISSNs: 1355-4794

Abstract

ABSTRACT: Micropsia is a rare condition in which patients perceive the outside world smaller in size than it actually is. We examined a patient who, after a right occipito-parietal stroke, subjectively reported perceiving everything at seventy percent of the actual size. Using experimental tasks, we confirmed the extent of his micropsia at 70%. Visual half-field tests showed an impaired perception of shape, location and motion in the left visual field. As his micropsia concerns the complete visual field, we suggest that it is caused by a higher-order compensation process in order to reconcile the conflicting information from the two hemifields.