Research Topics
Genomes and GenesSpecies | Yoko HoshiSummaryAffiliation: Tokyo Institute of Psychiatry Country: Japan Publications
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Detail Information
Publications
Reevaluation of near-infrared light propagation in the adult human head: implications for functional near-infrared spectroscopyYoko Hoshi
Tokyo Institute of Psychiatry, Department of Integrated Neuroscience, 2 1 8 Kamikitazawa, Setagaya Ku, Tokyo 156 8585, Japan
J Biomed Opt 10:064032. 2005..These results indicate that the NIR signal is very sensitive to hemodynamic changes associated with functional brain activation in the case that changes in the extracerebral tissue are ignorable...
Functional near-infrared spectroscopy: current status and future prospectsYoko Hoshi
Tokyo Institute of Psychiatry, Integrated Neuroscience Research Team, 2 1 8 Kamikitazawa, Tokyo 156 8585, Japan
J Biomed Opt 12:062106. 2007..This review demonstrates the strengths and the advantages of NIRS, clarifies the problems, and identifies the limitations of NIRS measurements. Finally, its future prospects are described...- Spatiotemporal characteristics of hemodynamic changes in the human lateral prefrontal cortex during working memory tasksYoko Hoshi
Department of Integrated Neuroscience, Tokyo Institute of Psychiatry, Kamikitazawa 2 1 8, Setagaya Ku, Tokyo 156 8585, Japan
Neuroimage 20:1493-504. 2003..The remaining 2 of the 12 participants had no regions commonly activated by these tasks. These results suggest that although the PFC is implicated in the CE, there is no stereotyped anatomical PFC substrate for the CE... - Functional near-infrared optical imaging: utility and limitations in human brain mappingYoko Hoshi
Department of Integrated Neuroscience, Tokyo Institute of Psychiatry, 2 1 8 Kamikitazawa, Setagaya Ku, Tokyo 156 8585, Japan
Psychophysiology 40:511-20. 2003.... - Interpretation of near-infrared spectroscopy signals: a study with a newly developed perfused rat brain modelY Hoshi
Biophysics Group, Research Institute for Electronic Science, Hokkaido University, Sapporo 060 0812, Japan
J Appl Physiol 90:1657-62. 2001.... - Resting hypofrontality in schizophrenia: A study using near-infrared time-resolved spectroscopyYoko Hoshi
Integrated Neuroscience Research Team, Tokyo Institute of Psychiatry, 2 1 8 Kamikitazawa, Setagaya Ku, Tokyo 156 8585, Japan
Schizophr Res 84:411-20. 2006..This does not necessarily represent frontal dysfunction, but may reflect anatomical and/or functional changes in frontal microcirculation... - Recognition of human emotions from cerebral blood flow changes in the frontal region: a study with event-related near-infrared spectroscopyYoko Hoshi
Integrated Neuroscience Research Team, Tokyo Institute of Psychiatry, Tokyo, Japan
J Neuroimaging 21:e94-101. 2011..The forehead region is easily accessible to NIRS measurements, whereas the role of the anterior prefrontal cortex (PFC) in the processing of emotion remains to be elucidated... - Movement interference attenuates somatosensory high-frequency oscillations: contribution of local axon collaterals of 3b pyramidal neuronsMasato Tanosaki
Department of Integrated Neuroscience, Tokyo Institute of Psychiatry, 2 1 8 Kamikitazawa, Setagaya Ku, Japan
Clin Neurophysiol 113:993-1000. 2002..We examined the effects of movement interference on high-frequency oscillations (HFOs) and N20m in 10 healthy subjects... - Selective attention regulates spatial and intensity information processing in the human primary somatosensory cortexYoshinobu Iguchi
Department of Integrated Neuroscience, Tokyo Institute of Psychiatry, 2 1 8 Kamikitazawa Setagaya ku Tokyo 156 8585, Japan
Neuroreport 13:2335-9. 2002..The results suggest that a conscious regulation of stimulus intensity coding in the SI cortex underlies the attention-dependent enhancement of spatial finger information processing... - Attention induces reciprocal activity in the human somatosensory cortex enhancing relevant- and suppressing irrelevant inputs from fingersYoshinobu Iguchi
Department of Integrated Neuroscience, Tokyo Institute of Psychiatry, Japan
Clin Neurophysiol 116:1077-87. 2005..We studied whether attention regulates information processing in the human primary somatosensory cortex (SI) by selective enhancement of relevant- and suppression of irrelevant information... - Near-infrared spectroscopy analysis of frontal lobe dysfunction in schizophreniaToshikazu Shinba
Department of Stress Disorders Research and Integrative Neuroscience, Tokyo Institute of Psychiatry, Tokyo, Japan
Biol Psychiatry 55:154-64. 2004..These results support the usefulness of NIRS data in investigating frontal lobe dysfunction and evaluating psychopathologic condition in schizophrenic patients... - Contribution of primary somatosensory area 3b to somatic cognition: a neuromagnetic studyMasato Tanosaki
Department of Integrated Neuroscience, Tokyo Institute of Psychiatry, Tokyo, Japan
Neuroreport 13:1519-22. 2002..The result indicates that such circuitry plays a fundamental role in magnitude estimation of somatic stimuli... - Effect of stimulus frequency on human cerebral hemodynamic responses to electric median nerve stimulation: a near-infrared spectroscopic studyMasato Tanosaki
Department of Integrated Neuroscience, Tokyo Institute of Psychiatry, 2 1 8 Kamikitazawa, Setagaya Ku, Tokyo 156 8585, Japan
Neurosci Lett 352:1-4. 2003..Since temporal activation patterns are different in two somatosensory areas, real-time optical monitoring is necessary in evaluation of hemodynamic responses to electric nerve stimulation... - Co-activation of the secondary somatosensory and auditory cortices facilitates frequency discrimination of vibrotactile stimuliYoshinobu Iguchi
Integrated Neuroscience Research Team, Tokyo Institute of Psychiatry, 2 1 8 Kamikitazawa, Tokyo 156 8585, Japan
Neuroscience 148:461-72. 2007.... - Tactile interference to the face affects magnetic responses elicited by electric thumb stimulationMasato Tanosaki
Department of Integrated Neuroscience, Tokyo Institute of Psychiatry, 2 1 8 Kamikitazawa, Setagaya Ku, Tokyo 156 8585, Japan
Clin Neurophysiol 114:2118-23. 2003..We examined the effect of tactile interference to the face on somatosensory evoked magnetic fields (SEFs) following electric thumb stimulation... - A perfused rat brain model maintaining the connection between the central and peripheral nervous systemsNorio Kobayashi
Biophysics Group, Institute for Electronic Science, Hokkaido University, Sapporo 060-0812, Japan
J Neurosci Methods 132:191-8. 2004..The present model, in which we can change cerebral blood flow (CBF) and/or cerebral metabolism without directly affecting the systemic circulation, will provide a new approach to brain research... - Diversity of neural-hemodynamic relationships associated with differences in cortical processing during bilateral somatosensory activation in ratsMasahito Nemoto
Integrated Neuroscience Research Team, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
Neuroimage 59:3325-38. 2012.... - Role of the prefrontal cortex in the cognitive control of reaching movements: near-infrared spectroscopy studyKotaro Goto
Hokkaido University, Graduate School of Education, Sapporo, Japan
J Biomed Opt 16:127003. 2011..These findings suggest that the DLPFC is engaged in higher order cognitive control, while the right VLPFC is engaged in both higher and lower order cognitive controls... - Extraction of depth-dependent signals from time-resolved reflectance in layered turbid mediaChie Sato
Tokyo Institute of Psychiatry, Department of Integrated Neuroscience, 2 1 8 Kamikitazawa, Setagaya Ku, Tokyo 156 8585, Japan
J Biomed Opt 10:064008. 2005..These results suggest the potential that mu(a) of the lower layer can be determined by our procedure... - Quantitative evaluation of the relative contribution ratio of cerebral tissue to near-infrared signals in the adult human head: a preliminary studyShunji Kohri
Laboratory of Biophysics, Research Institute for Electronic Science, Hokkaido University, Sapporo, Japan
Physiol Meas 23:301-12. 2002..Thus, our present method opened the door to the possibility of selectively obtaining optical signals attributed to cerebral tissue... - Regional cerebral blood flow changes associated with emotions in childrenYoko Hoshi
Department of Integrated Neuroscience, Tokyo Institute of Psychiatry, Tokyo, Japan
Pediatr Neurol 27:275-81. 2002..Our newly developed system will open a window into brain physiology in children... - Reduction of image artifacts induced by change in the optode coupling in time-resolved diffuse optical tomographyRyo Fukuzawa
University of Electro Communications, Department of Mechanical Engineering and Intelligent Systems, Chofu, Tokyo, Japan
J Biomed Opt 16:116022. 2011..Moreover, numerical simulations, phantom experiments, and in vivo studies have validated this algorithm... - Near-infrared spectroscopic study on the effects of chewing on short-term memoryMayumi Wada
School of Dental Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
Appetite 57:749-52. 2011..Chewing did not improve task performance. Therefore, chewing-induced hemodynamic responses were unrelated to the performance in short-term memory tasks... - Towards the next generation of near-infrared spectroscopyYoko Hoshi
Integrated Neuroscience Research Project, Tokyo Metropolitan Institute of Medical Science, 2 1 6 Kamikitazawa, Setagaya Ku, Tokyo 156 8506, Japan
Philos Trans A Math Phys Eng Sci 369:4425-39. 2011..Finally, near-infrared optical tomography--the next generation of NIRS--is described as a potential technique to overcome the limitations of NIRS... - Intraoperative monitoring of depth-dependent hemoglobin concentration changes during carotid endarterectomy by time-resolved spectroscopyChie Sato
Integrated Neuroscience Research Team, Tokyo Institute of Psychiatry, Tokyo, Japan
Appl Opt 46:2785-92. 2007..In addition, the combined evaluation of mu(a) changes with the DE-fit and MLB methods will provide us with more available information about the hemodynamic changes in the depth direction... - Specific somatosensory processing in somatosensory area 3b for human thumb: a neuromagnetic studyM Tanosaki
Department of Psychophysiology, Tokyo Institute of Psychiatry, 2 1 8 Kamikitazawa, Setagaya Ku, 156 8585, Tokyo, Japan
Clin Neurophysiol 112:1516-22. 2001..We examined the relation between somatosensory N20m primary responses and high-frequency oscillations (HFOs) after thumb and middle finger stimulation... - Variation of temporal characteristics in human cerebral hemodynamic responses to electric median nerve stimulation: a near-infrared spectroscopic studyM Tanosaki
Department of Integrated Neuroscience, Tokyo Institute of Psychiatry, 2 1 8 Kamikitazawa, Setagaya Ku, Tokyo 156 8585, Japan
Neurosci Lett 316:75-8. 2001..Thus, taking account of the temporal activation patterns is necessary for proper interpretation of the hemodynamic response following electric nerve stimulation... - Functional near-infrared spectroscopy: potential and limitations in neuroimaging studiesYoko Hoshi
Department of Integrated Neuroscience, Tokyo Institute of Psychiatry, Tokyo 156-8585, Japan
Int Rev Neurobiol 66:237-66. 2005 - [Near-infrared optical imaging of human brain function--a novel approach to the brain and the mind]Yoko Hoshi
Department of Integrated Neuroscience, Tokyo Institute of Psychiatry
Seishin Shinkeigaku Zasshi 104:381-93. 2002..It is, thus, expected that NIRS will open a window into brain physiology in subjects who are difficult to examine with PET and fMRI such as children, the elderly, and patients with psychoneurological problems... - Blood oxygenation level-dependent functional magnetic resonance imaging of bilateral but asymmetrical responses to gustatory stimulation in the rat insular cortexIkuhiro Kida
Integrated Neuroscience Research Team, Tokyo Institute of Psychiatry, Setagaya Ku, Tokyo, Japan
Neuroimage 56:1520-5. 2011..We think that BOLD fMRI of taste function in rodents will improve our understanding of taste information processing... - Selective spatial attention induces short-term plasticity in human somatosensory cortexY Iguchi
Department of Integrated Neuroscience, Tokyo Institute of Psychiatry, 2-1-8 Kamikitazawa Setagaya-ku, Tokyo 156-8585, Japan
Neuroreport 12:3133-6. 2001..The task-dependent and immediate switchover of cortical finger representation demonstrates a dynamic SI activation for spatial information processing... - A resistance gene in disguise for schizophrenia?Nagafumi Doi
Department of Neuropsychiatry, University of Tokyo, Tokyo, Japan
Am J Med Genet B Neuropsychiatr Genet 144:165-73. 2007..485 T most likely confers resistance but not susceptibility to schizophrenia. An interaction between a nuclear resistance gene and a presumptive pathogenic gene in the mitochondrial DNA was suggested... - Relationship between fluctuations in the cerebral hemoglobin oxygenation state and neuronal activity under resting conditions in manY Hoshi
Biophysics Group, Research Institute for Electronic Science, Hokkaido University, Sapporo, Japan
Neurosci Lett 245:147-50. 1998..The results suggest that spontaneous neuronal activity is responsible for fluctuations in the hemoglobin oxygenation state in the resting state... - Relationship between infant and mother circadian rest-activity rhythm pre- and postpartum, in comparison to an infant with free-running rhythmKyoko Nishihara
Integrated Neuroscience Research Team, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
Chronobiol Int 29:363-70. 2012..The finding of this study indicates the free-running rhythm of infant is not reset by maternal entrainment factors... - Neural mechanisms for generation of tactile interference effects on somatosensory evoked magnetic fields in humansMasato Tanosaki
Department of Integrated Neuroscience, Tokyo Institute of Psychiatry, 2 1 8 Kamikitazawa, Setagaya ku 156 8585, Japan
Clin Neurophysiol 113:672-80. 2002..We examined modification of somatosensory evoked fields following electric middle finger stimulation with interference to the same and surrounding digits in 13 subjects... - Impaired interhemispheric integration in brain oxygenation and hemodynamics in schizophreniaF Okada
Health Administration Center, Hokkaido University, Sapporo, Japan
Eur Arch Psychiatry Clin Neurosci 244:17-25. 1994..On the other hand, half the schizophrenics showed dysregulated patterns between hemispheres which never appeared in normal volunteers. Certain schizophrenic symptoms may be related to defective interhemispheric integration... - Visuospatial imagery is a fruitful strategy for the digit span backward task: a study with near-infrared optical tomographyY Hoshi
Biophysics Group, Research Institute for Electronic Science, Hokkaido University, North Ward, North 12, West 6, Sapporo, Japan
Brain Res Cogn Brain Res 9:339-42. 2000..These results suggest that visuospatial imagery is a useful strategy for the DB task. Optical tomography described here is a new modality of neuropsychological studies... - Simple algorithm for the measurement of absorption coefficients of a two-layered medium by spatially resolved and time-resolved reflectanceMiho Shimada
High Energy Accelerator Research Organization, KEK, Tsukuba, Ibaraki, Japan
Appl Opt 44:7554-63. 2005.... - Cerebral hemodynamics during the induction of antenatal periventricular leukomalacia by hemorrhagic hypotension in chronically instrumented fetal sheepTadashi Matsuda
Department of Pediatrics, Hokkaido University Graduate School of Medicine, Sapporo, Japan
Am J Obstet Gynecol 194:1057-63. 2006..Our purpose was to determine the characteristics of cerebral ischemia during the induction of antenatal periventricular leukomalacia by hemorrhagic hypotension in premature fetal sheep... - Temporal classification of multichannel near-infrared spectroscopy signals of motor imagery for developing a brain-computer interfaceRanganatha Sitaram
Institute for Infocomm Research, Singapore
Neuroimage 34:1416-27. 2007..We also discuss here future extension of our system to develop a word speller application based on a cursor control paradigm incorporating online pattern classification of single-trial NIRS data... - Persistence problem in schizophrenia and mitochondrial DNANagafumi Doi
Am J Med Genet B Neuropsychiatr Genet 144:1-4. 2007..This hypothesis, coupled with the report which suggests mitochondrial dysfunction in schizophrenia, may encourage a new direction in genetic study of this puzzling disorder...