Comparison of changes in oxygenated hemoglobin during the tree-drawing task between patients with schizophrenia and healthy controls

Shinya Nakano,1,2 Yoshihisa Shoji,1,3 Kiichiro Morita,1,3 Hiroyasu Igimi,1,4 Mamoru Sato,1,3 Youhei Ishii,1 Akihiko Kondo,1 Naohisa Uchimura1,3 1Cognitive and Molecular Research Institute of Brain Diseases, Kurume University, Kurume, Japan; 2Department of Clinical Laboratory Medicine, Kurume Univer...

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Autores principales:	Nakano S, Shoji Y, Morita K, Igimi H, Sato M, Ishii Y, Kondo A, Uchimura N
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2018
Materias:	tree-drawing task near-infrared spectroscopy (NIRS) oxygenated hemoglobin schizophrenia Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571 Neurology. Diseases of the nervous system RC346-429
Acceso en línea:	https://doaj.org/article/7c298720c1594b5fa7e1d61daaeb1ba1
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spelling	oai:doaj.org-article:7c298720c1594b5fa7e1d61daaeb1ba12021-12-02T00:23:52ZComparison of changes in oxygenated hemoglobin during the tree-drawing task between patients with schizophrenia and healthy controls1178-2021https://doaj.org/article/7c298720c1594b5fa7e1d61daaeb1ba12018-04-01T00:00:00Zhttps://www.dovepress.com/comparison-of-changes-in-oxygenated-hemoglobin-during-the-tree-drawing-peer-reviewed-article-NDThttps://doaj.org/toc/1178-2021Shinya Nakano,1,2 Yoshihisa Shoji,1,3 Kiichiro Morita,1,3 Hiroyasu Igimi,1,4 Mamoru Sato,1,3 Youhei Ishii,1 Akihiko Kondo,1 Naohisa Uchimura1,3 1Cognitive and Molecular Research Institute of Brain Diseases, Kurume University, Kurume, Japan; 2Department of Clinical Laboratory Medicine, Kurume University Hospital, Kurume, Japan; 3Department of Neuropsychiatry, Kurume University School of Medicine, Kurume, Japan; 4Department of Neuropsychiatry, Horikawa Hospital, Medical Corporation Association Horikawakai, Kurume, Japan Background: Tree-drawing test is used as a projective psychological test that expresses the abnormal internal experience in patients with schizophrenia (SZ). Despite the widely accepted view that the cognitive function is involved in characteristic tree-drawing in patients with SZ, no study has psychophysiologically examined it. The present study aimed to investigate the involvement of cognitive function during tree-drawing in patients with SZ. For that purpose, we evaluated the brain function in patients with SZ during a tree-drawing task by using near-infrared spectroscopy (NIRS) and compared them with those in healthy controls. Patients and methods: The subjects were 28 healthy controls and 28 patients with SZ. Changes in the oxygenated hemoglobin ([oxy-Hb]) concentration in both the groups during the task of drawing a tree imagined freely (free-drawing task) and the task of copying an illustration of a tree (copying task) were measured by using NIRS. Results: Because of the difference between the task conditions, [oxy-Hb] levels in controls during the free-drawing task were higher than that during the copying task at the bilateral frontal pole regions and left inferior frontal region. Because of the difference between the groups, [oxy-Hb] levels at the left middle frontal region, bilateral inferior frontal regions, bilateral inferior parietal regions, and left superior temporal region during the free-drawing task in patients were lower than that in controls. Conclusion: [oxy-Hb] during the tree-drawing task in patients with SZ was lower than that in healthy controls. Our results suggest that brain dysfunction in patients with SZ might be associated with their tree-drawing. Keywords: tree-drawing test, near-infrared spectroscopy, cognitive function, mnemonic retrieval, executive function, working memory, attentionNakano SShoji YMorita KIgimi HSato MIshii YKondo AUchimura NDove Medical Pressarticletree-drawing tasknear-infrared spectroscopy (NIRS)oxygenated hemoglobinschizophreniaNeurosciences. Biological psychiatry. NeuropsychiatryRC321-571Neurology. Diseases of the nervous systemRC346-429ENNeuropsychiatric Disease and Treatment, Vol Volume 14, Pp 1071-1082 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	tree-drawing task near-infrared spectroscopy (NIRS) oxygenated hemoglobin schizophrenia Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571 Neurology. Diseases of the nervous system RC346-429
spellingShingle	tree-drawing task near-infrared spectroscopy (NIRS) oxygenated hemoglobin schizophrenia Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571 Neurology. Diseases of the nervous system RC346-429 Nakano S Shoji Y Morita K Igimi H Sato M Ishii Y Kondo A Uchimura N Comparison of changes in oxygenated hemoglobin during the tree-drawing task between patients with schizophrenia and healthy controls
description	Shinya Nakano,1,2 Yoshihisa Shoji,1,3 Kiichiro Morita,1,3 Hiroyasu Igimi,1,4 Mamoru Sato,1,3 Youhei Ishii,1 Akihiko Kondo,1 Naohisa Uchimura1,3 1Cognitive and Molecular Research Institute of Brain Diseases, Kurume University, Kurume, Japan; 2Department of Clinical Laboratory Medicine, Kurume University Hospital, Kurume, Japan; 3Department of Neuropsychiatry, Kurume University School of Medicine, Kurume, Japan; 4Department of Neuropsychiatry, Horikawa Hospital, Medical Corporation Association Horikawakai, Kurume, Japan Background: Tree-drawing test is used as a projective psychological test that expresses the abnormal internal experience in patients with schizophrenia (SZ). Despite the widely accepted view that the cognitive function is involved in characteristic tree-drawing in patients with SZ, no study has psychophysiologically examined it. The present study aimed to investigate the involvement of cognitive function during tree-drawing in patients with SZ. For that purpose, we evaluated the brain function in patients with SZ during a tree-drawing task by using near-infrared spectroscopy (NIRS) and compared them with those in healthy controls. Patients and methods: The subjects were 28 healthy controls and 28 patients with SZ. Changes in the oxygenated hemoglobin ([oxy-Hb]) concentration in both the groups during the task of drawing a tree imagined freely (free-drawing task) and the task of copying an illustration of a tree (copying task) were measured by using NIRS. Results: Because of the difference between the task conditions, [oxy-Hb] levels in controls during the free-drawing task were higher than that during the copying task at the bilateral frontal pole regions and left inferior frontal region. Because of the difference between the groups, [oxy-Hb] levels at the left middle frontal region, bilateral inferior frontal regions, bilateral inferior parietal regions, and left superior temporal region during the free-drawing task in patients were lower than that in controls. Conclusion: [oxy-Hb] during the tree-drawing task in patients with SZ was lower than that in healthy controls. Our results suggest that brain dysfunction in patients with SZ might be associated with their tree-drawing. Keywords: tree-drawing test, near-infrared spectroscopy, cognitive function, mnemonic retrieval, executive function, working memory, attention
format	article
author	Nakano S Shoji Y Morita K Igimi H Sato M Ishii Y Kondo A Uchimura N
author_facet	Nakano S Shoji Y Morita K Igimi H Sato M Ishii Y Kondo A Uchimura N
author_sort	Nakano S
title	Comparison of changes in oxygenated hemoglobin during the tree-drawing task between patients with schizophrenia and healthy controls
title_short	Comparison of changes in oxygenated hemoglobin during the tree-drawing task between patients with schizophrenia and healthy controls
title_full	Comparison of changes in oxygenated hemoglobin during the tree-drawing task between patients with schizophrenia and healthy controls
title_fullStr	Comparison of changes in oxygenated hemoglobin during the tree-drawing task between patients with schizophrenia and healthy controls
title_full_unstemmed	Comparison of changes in oxygenated hemoglobin during the tree-drawing task between patients with schizophrenia and healthy controls
title_sort	comparison of changes in oxygenated hemoglobin during the tree-drawing task between patients with schizophrenia and healthy controls
publisher	Dove Medical Press
publishDate	2018
url	https://doaj.org/article/7c298720c1594b5fa7e1d61daaeb1ba1
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Comparison of changes in oxygenated hemoglobin during the tree-drawing task between patients with schizophrenia and healthy controls

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