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What you see is not necessarily what you perceive: Picture agnosia and Alzheimer's disease
Author(s) -
SugimotoShiromaru Azusa,
Mori Yukiko,
Futamura Akinori,
Midorikawa Akira,
Koyama Shinichi,
Kawamura Mitsuru
Publication year - 2016
Publication title -
neurology and clinical neuroscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.125
0ISSN - 2049-4173
DOI - 10.1111/ncn3.12034
Subject(s) - agnosia , visual agnosia , medicine , perception , test (biology) , line drawings , disease , cognitive psychology , audiology , psychology , neuroscience , pathology , paleontology , engineering drawing , engineering , biology
Background Picture agnosia has become more significant as a symptom in diagnosing neurodegenerative diseases. However, there is no standardized test for picture agnosia. Aim To design a picture test for picture agnosia and better understand related 3‐D visual perception. Methods A total of 10 Alzheimer's disease patients and 10 healthy older adults were recruited as participants. We designed a picture test consisting of real objects, colored photographs and line drawings, and compared response times. Results The average response time to drawings was significantly longer than for real objects and photographs ( P < 0.05). Conclusion We believe the present results provide a foundation for designing a diagnostic picture test.