Event Abstract Back to Event Single word-related changes in cerebral oxy-Hb during discrimination task in schizophrenic patients: comparison with healthy subjects Mamoru Satou1, 2, 3* and Kiichiro Morita1, 2* 1 Kurume University, School of Medicine, Neuropsychiatry, Japan 2 Kurume University, Cognitive and Molecular Research Institute of Brain Diseases, Japan 3 Kurume University, Neuropsychiatry, Japan Near-infrared spectroscopy (NIRS) is an optical imaging method that allows non-invasive in-vivo measurements of changes in oxygenated (oxy-Hb) and deoxygenated (deoxy-Hb) hemoglobin concentrations in brain. For the present study,we examine 30 patients with schizophrenia(age: 30.6±7.6) and age, sex- matched 30 healthy volunteers (age: 31.6±7.8) by means of multi-channel NIRS during performance of two kind of Shiritori task (standard and creative word). Two kinds of stimulus were appeared in front TV monitor. Single word (noun) for the target stimulus and and ‘a.i.u’for non-target stimulus with 10-12 s intervals. All subjects were asked to say '‘a.i.u’ as a non-target and do Shiritori as target stimulus. Averaged subtracted (target minus non-target) waveforms for the 20 target were measured, the changes in oxy-Hb were converted to numeric values every 100 ms. the approximated value of area change in oxy-Hb concentration during the performance of each task was also determined as the index [oxy-Hb]. The present data was obtained from the subjects produce more than 16 words. [oxy-Hb] were evaluated from four ROIs (religions of interest) as a frontal pole, middle prefrontal, association and temporal areas. [Oxy-Hb] in patients withschizophrenia were significantly smaller than those in healthy controls on frontal pole and middle prefrontal areas under standard and creative tasks. [oxy-Hb] on the left side were significantly larger than those on the right side in middle prefrontal area in healthy subjects. Single event-related [oxy-Hb] using discriminative Shiritori tasks are useful for evaluating psychophysiological indices. Keywords: Executive Function, Psychophysiology, Schizophrenia, near-infrared spectroscopy, Shiritori Conference: XII International Conference on Cognitive Neuroscience (ICON-XII), Brisbane, Queensland, Australia, 27 Jul - 31 Jul, 2014. Presentation Type: Poster Topic: Cognition and Executive Processes Citation: Satou M and Morita K (2015). Single word-related changes in cerebral oxy-Hb during discrimination task in schizophrenic patients: comparison with healthy subjects. Conference Abstract: XII International Conference on Cognitive Neuroscience (ICON-XII). doi: 10.3389/conf.fnhum.2015.217.00321 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 19 Feb 2015; Published Online: 24 Apr 2015. * Correspondence: Prof. Mamoru Satou, Kurume University, School of Medicine, Neuropsychiatry, Kurume, Japan, yshoji@med.kurume-u.ac.jp Prof. Kiichiro Morita, Kurume University, School of Medicine, Neuropsychiatry, Kurume, Japan, Kiichiro@med.kurume-u.ac.jp Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. Abstract Info Abstract The Authors in Frontiers Mamoru Satou Kiichiro Morita Google Mamoru Satou Kiichiro Morita Google Scholar Mamoru Satou Kiichiro Morita PubMed Mamoru Satou Kiichiro Morita Related Article in Frontiers Google Scholar PubMed Abstract Close Back to top Javascript is disabled. Please enable Javascript in your browser settings in order to see all the content on this page.