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Grinband J, Steffener J, Razlighi QR, Stern Y. BOLD neurovascular coupling does not change significantly with normal aging. Hum Brain Mapp 2017; 38:3538-3551. [PMID: 28419680 DOI: 10.1002/hbm.23608] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 03/28/2017] [Accepted: 03/28/2017] [Indexed: 12/11/2022] Open
Abstract
Studies of cognitive function that compare the blood oxygenation level dependent (BOLD) signal across age groups often require the assumption that neurovascular coupling does not change with age. Tests of this assumption have produced mixed results regarding the strength of the coupling and its relative time course. Using deconvolution, we found that age does not have a significant effect on the time course of the hemodynamic impulse response function or on the slope of the BOLD versus stimulus duration relationship. These results suggest that in cognitive studies of healthy aging, group differences in BOLD activation are likely due to age-related changes in cognitive-neural interactions and information processing rather than to impairments in neurovascular coupling. Hum Brain Mapp 38:3538-3551, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Jack Grinband
- Department of Radiology, Columbia University, New York
| | - Jason Steffener
- Interdisciplinary School of Health Sciences, University of Ottawa, Ontario
| | - Qolamreza R Razlighi
- Department of Neurology, Columbia University, New York.,Department of Biomedical Engineering, Columbia University, New York
| | - Yaakov Stern
- Department of Neurology, Columbia University, New York
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Vasta R, Cerasa A, Gramigna V, Augimeri A, Olivadese G, Pellegrino G, Martino I, Machado A, Cai Z, Caracciolo M, Grova C, Quattrone A. The movement time analyser task investigated with functional near infrared spectroscopy: an ecologic approach for measuring hemodynamic response in the motor system. Aging Clin Exp Res 2017; 29:311-318. [PMID: 27055849 DOI: 10.1007/s40520-016-0566-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2015] [Accepted: 03/21/2016] [Indexed: 11/26/2022]
Abstract
AIMS Movement time analyzer (MTA) is an objective instrument to evaluate the degree of motor impairment as well as to investigate the dopaminergic drug effect in Parkinson's disease patients. The aim of this study is to validate a new ecologic neuroimaging tool for quantifying MTA-related hemodynamic response of the cortical motor system by means of functional near-infrared spectroscopy (fNIRS). MATERIALS 11 right-handed healthy volunteers (six male and five female, age range 27-64 years) were studied with fNIRS and functional magnetic resonance imaging (fMRI) while performing MTA task for each hand. RESULTS MTA performance was better for the dominant hand and younger participants. Both fNIRS and fMRI analyses revealed MTA-related increase of haemoglobin levels in the primary motor and premotor cortices contralateral to the moving hand. This response progressively increased with aging. CONCLUSION These findings supported the translation of fNIRS-based MTA behavioural tool in clinical practice.
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Affiliation(s)
- Roberta Vasta
- Institute of Bioimaging and Molecular Physiology-CNR, 88100, Catanzaro, Italy
| | - Antonio Cerasa
- Institute of Bioimaging and Molecular Physiology-CNR, 88100, Catanzaro, Italy.
| | - Vera Gramigna
- Institute of Bioimaging and Molecular Physiology-CNR, 88100, Catanzaro, Italy
| | - Antonio Augimeri
- Institute of Bioimaging and Molecular Physiology-CNR, 88100, Catanzaro, Italy
| | - Giuseppe Olivadese
- Institute of Bioimaging and Molecular Physiology-CNR, 88100, Catanzaro, Italy
| | - Giovanni Pellegrino
- Multimodal Functional Imaging Laboratory, Biomedical Engineering Department, Montreal Neurological Institute, McGill University, Quebec, H3A 2B4, Canada
| | - Iolanda Martino
- Institute of Bioimaging and Molecular Physiology-CNR, 88100, Catanzaro, Italy
| | - Alexis Machado
- Multimodal Functional Imaging Laboratory, Biomedical Engineering Department, Montreal Neurological Institute, McGill University, Quebec, H3A 2B4, Canada
| | - Zhengchen Cai
- Multimodal Functional Imaging Laboratory, Biomedical Engineering Department, Montreal Neurological Institute, McGill University, Quebec, H3A 2B4, Canada
- Physics Department and PERFORM Centre, Concordia University, Montreal, Canada
| | - Manuela Caracciolo
- Institute of Bioimaging and Molecular Physiology-CNR, 88100, Catanzaro, Italy
| | - Christophe Grova
- Multimodal Functional Imaging Laboratory, Biomedical Engineering Department, Montreal Neurological Institute, McGill University, Quebec, H3A 2B4, Canada
- Neurology and Neurosurgery Department, Neurological Institute, McGill University, Montreal, Canada
- Physics Department and PERFORM Centre, Concordia University, Montreal, Canada
| | - Aldo Quattrone
- Institute of Bioimaging and Molecular Physiology-CNR, 88100, Catanzaro, Italy
- Institute of Neurology, University Magna Graecia, Germaneto, CZ, Italy
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53
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Wijeakumar S, Huppert TJ, Magnotta VA, Buss AT, Spencer JP. Validating an image-based fNIRS approach with fMRI and a working memory task. Neuroimage 2017; 147:204-218. [DOI: 10.1016/j.neuroimage.2016.12.007] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Revised: 11/15/2016] [Accepted: 12/03/2016] [Indexed: 10/20/2022] Open
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54
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Reduction of global interference of scalp-hemodynamics in functional near-infrared spectroscopy using short distance probes. Neuroimage 2016; 141:120-132. [DOI: 10.1016/j.neuroimage.2016.06.054] [Citation(s) in RCA: 93] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 06/21/2016] [Accepted: 06/28/2016] [Indexed: 11/18/2022] Open
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Bendall RCA, Eachus P, Thompson C. A Brief Review of Research Using Near-Infrared Spectroscopy to Measure Activation of the Prefrontal Cortex during Emotional Processing: The Importance of Experimental Design. Front Hum Neurosci 2016; 10:529. [PMID: 27812329 PMCID: PMC5071349 DOI: 10.3389/fnhum.2016.00529] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 10/05/2016] [Indexed: 11/13/2022] Open
Abstract
During the past two decades there has been a pronounced increase in the number of published research studies that have employed near-infrared spectroscopy (NIRS) to measure neural activation. The technique is now an accepted neuroimaging tool adopted by cognitive neuroscientists to investigate a number of fields, one of which is the study of emotional processing. Crucially, one brain region that is important to the processing of emotional information is the prefrontal cortex (PFC) and NIRS is ideally suited to measuring activity in this region. Compared to other methods used to record neural activation, NIRS reduces the discomfort to participants, makes data collection from larger sample sizes more achievable, and allows measurement of activation during tasks involving physical movement. However, the use of NIRS to investigate the links between emotion and cognition has revealed mixed findings. For instance, whilst some studies report increased PFC activity associated with the processing of negative information, others show increased activity in relation to positive information. Research shows differences in PFC activity between different cognitive tasks, yet findings also vary within similar tasks. This work reviews a selection of recent studies that have adopted NIRS to study PFC activity during emotional processing in both healthy individuals and patient populations. It highlights the key differences between research findings and argues that variations in experimental design could be a contributing factor to the mixed results. Guidance is provided for future work in this area in order to improve consistency within this growing field.
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Affiliation(s)
- Robert C A Bendall
- Directorate of Psychology and Public Health, School of Health Sciences, University of Salford Salford, UK
| | - Peter Eachus
- Directorate of Psychology and Public Health, School of Health Sciences, University of Salford Salford, UK
| | - Catherine Thompson
- Directorate of Psychology and Public Health, School of Health Sciences, University of Salford Salford, UK
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56
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Ward LM, Morison G, Simpson WA, Simmers AJ, Shahani U. Using Functional Near Infrared Spectroscopy (fNIRS) to Study Dynamic Stereoscopic Depth Perception. Brain Topogr 2016; 29:515-23. [PMID: 26900069 PMCID: PMC4899499 DOI: 10.1007/s10548-016-0476-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Accepted: 02/08/2016] [Indexed: 11/28/2022]
Abstract
The parietal cortex has been widely implicated in the processing of depth perception by many neuroimaging studies, yet functional near infrared spectroscopy (fNIRS) has been an under-utilised tool to examine the relationship of oxy- ([HbO]) and de-oxyhaemoglobin ([HbR]) in perception. Here we examine the haemodynamic response (HDR) to the processing of induced depth stimulation using dynamic random-dot-stereograms (RDS). We used fNIRS to measure the HDR associated with depth perception in healthy young adults (n = 13, mean age 24). Using a blocked design, absolute values of [HbO] and [HbR] were recorded across parieto-occipital and occipital cortices, in response to dynamic RDS. Control and test images were identical except for the horizontal shift in pixels in the RDS that resulted in binocular disparity and induced the percept of a 3D sine wave that ‘popped out’ of the test stimulus. The control stimulus had zero disparity and induced a ‘flat’ percept. All participants had stereoacuity within normal clinical limits and successfully perceived the depth in the dynamic RDS. Results showed a significant effect of this complex visual stimulation in the right parieto-occipital cortex (p < 0.01, η2 = 0.54). The test stimulus elicited a significant increase in [HbO] during depth perception compared to the control image (p < 0.001, 99.99 % CI [0.008–0.294]). The similarity between the two stimuli may have resulted in the HDR of the occipital cortex showing no significant increase or decrease of cerebral oxygenation levels during depth stimulation. Cerebral oxygenation measures of [HbO] confirmed the strong association of the right parieto-occipital cortex with processing depth perception. Our study demonstrates the validity of fNIRS to investigate [HbO] and [HbR] during high-level visual processing of complex stimuli.
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Affiliation(s)
- Laura M Ward
- Department of Vision Sciences, Glasgow Caledonian University, 70 Cowcaddens Road, Glasgow, G4 0BA, UK
| | - Gordon Morison
- Department of Engineering, Glasgow Caledonian University, 70 Cowcaddens Road, Glasgow, G4 0BA, UK
| | - William A Simpson
- School of Psychology, Plymouth University, Drake Circus, Plymouth, Devon, PL4 8AA, UK
| | - Anita J Simmers
- Department of Vision Sciences, Glasgow Caledonian University, 70 Cowcaddens Road, Glasgow, G4 0BA, UK
| | - Uma Shahani
- Department of Vision Sciences, Glasgow Caledonian University, 70 Cowcaddens Road, Glasgow, G4 0BA, UK.
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57
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Stojanovic-Radic J, Wylie G, Voelbel G, Chiaravalloti N, DeLuca J. Neuroimaging and cognition using functional near infrared spectroscopy (fNIRS) in multiple sclerosis. Brain Imaging Behav 2016; 9:302-11. [PMID: 24916919 DOI: 10.1007/s11682-014-9307-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The present study utilized functional near infrared spectroscopy (fNIRS) to detect neural activation differences in the orbitofrontal brain region between individuals with multiple sclerosis (MS) and healthy controls (HCs) during a working memory (WM) task. Thirteen individuals with MS and 12 HCs underwent fNIRS recording while performing the n-back WM task with four levels of difficulty (0-, 1-, 2-, and 3-back). Subjects were fitted with the fNIRS cap consisting of 30 'optodes' positioned over the forehead. The results revealed different patterns of brain activation in MS and HCs. The MS group showed an increase in brain activation, as measured by the concentration of oxygenated hemoglobin (oxyHb), in the left superior frontal gyrus (LSFG) at lower task difficulty levels (i.e. 1-back), followed by a decrease at higher task difficulty (2- and 3-back) as compared with the HC group. HC group achieved higher accuracy than the MS group on the lower task loads (i.e. 0- and 1-back), however there were no performance differences between the groups at the higher task loads (i.e. 2- and 3-back). Taken together, the results suggest that individuals with MS experience a task with the lower cognitive load as more difficult than the HC group, and the brain activation patterns observed during the task confirm some of the previous findings from functional magnetic resonance imaging (fMRI) studies. This study is the first to investigate brain activation by utilizing the method of fNIRS in MS during the performance of a cognitive task.
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Affiliation(s)
- Jelena Stojanovic-Radic
- Kessler Foundation, Neuropsychology and Neuroscience Laboratory, 300 Executive Drive, Suite 70, West Orange, NJ, 07052, USA
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58
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Iso N, Moriuchi T, Sagari A, Kitajima E, Iso F, Tanaka K, Kikuchi Y, Tabira T, Higashi T. Monitoring Local Regional Hemodynamic Signal Changes during Motor Execution and Motor Imagery Using Near-Infrared Spectroscopy. Front Physiol 2016; 6:416. [PMID: 26793118 PMCID: PMC4707267 DOI: 10.3389/fphys.2015.00416] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Accepted: 12/18/2015] [Indexed: 12/04/2022] Open
Abstract
The aim of this study was to clarify the topographical localization of motor-related regional hemodynamic signal changes during motor execution (ME) and motor imagery (MI) by using near-infrared spectroscopy (NIRS), as this technique is more clinically expedient than established methods (e.g., fMRI). Twenty right-handed healthy subjects participated in this study. The experimental protocol was a blocked design consisting of 3 cycles of 20 s of task performance and 30 s of rest. The tapping sequence task was performed with their fingers under 4 conditions: ME and MI with the right or left hand. Hemodynamic brain activity was measured with NIRS to monitor changes in oxygenated hemoglobin (oxy-Hb) concentration. Oxy-Hb in the somatosensory motor cortex (SMC) increased significantly only during contralateral ME and showed a significant interaction between task and hand. There was a main effect of hand in the left SMC. Although there were no significant main effects or interactions in the supplemental motor area (SMA) and premotor area (PMA), oxy-Hb increased substantially under all conditions. These results clarified the topographical localization by motor-related regional hemodynamic signal changes during ME and MI by using NIRS.
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Affiliation(s)
- Naoki Iso
- Unit of Rehabilitation Sciences, Nagasaki University Graduate School of Biomedical SciencesNagasaki, Japan; Medical Corporation Toujinkai Miharadai HospitalNagasaki, Japan
| | - Takefumi Moriuchi
- Unit of Rehabilitation Sciences, Nagasaki University Graduate School of Biomedical SciencesNagasaki, Japan; Medical Corporation Toujinkai Miharadai HospitalNagasaki, Japan
| | - Akira Sagari
- Unit of Rehabilitation Sciences, Nagasaki University Graduate School of Biomedical SciencesNagasaki, Japan; Japanese Red Cross Society Nagasaki Genbaku HospitalNagasaki, Japan
| | - Eiji Kitajima
- Center for Industry, University and Government Cooperation, Nagasaki University Nagasaki, Japan
| | - Fumiko Iso
- Unit of Physical and Occupational Therapy, Nagasaki University Graduate School of Biomedical Sciences Nagasaki, Japan
| | - Koji Tanaka
- Unit of Physical and Occupational Therapy, Nagasaki University Graduate School of Biomedical Sciences Nagasaki, Japan
| | - Yasuki Kikuchi
- Unit of Physical and Occupational Therapy, Nagasaki University Graduate School of Biomedical Sciences Nagasaki, Japan
| | - Takayuki Tabira
- Department of Occupational Therapy, Faculty of Rehabilitation Sciences, Nishikyushu University Saga, Japan
| | - Toshio Higashi
- Unit of Rehabilitation Sciences, Nagasaki University Graduate School of Biomedical Sciences Nagasaki, Japan
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Bai R, Klaus A, Bellay T, Stewart C, Pajevic S, Nevo U, Merkle H, Plenz D, Basser PJ. Simultaneous calcium fluorescence imaging and MR of ex vivo organotypic cortical cultures: a new test bed for functional MRI. NMR IN BIOMEDICINE 2015; 28:1726-1738. [PMID: 26510537 DOI: 10.1002/nbm.3424] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 09/03/2015] [Accepted: 09/06/2015] [Indexed: 06/05/2023]
Abstract
Recently, several new functional (f)MRI contrast mechanisms including diffusion, phase imaging, proton density, etc. have been proposed to measure neuronal activity more directly and accurately than blood-oxygen-level dependent (BOLD) fMRI. However, these approaches have proved difficult to reproduce, mainly because of the dearth of reliable and robust test systems to vet and validate them. Here we describe the development and testing of such a test bed for non-BOLD fMRI. Organotypic cortical cultures were used as a stable and reproducible biological model of neuronal activity that shows spontaneous activity similar to that of in vivo brain cortex without any hemodynamic confounds. An open-access, single-sided magnetic resonance (MR) "profiler" consisting of four permanent magnets with magnetic field of 0.32 T was used in this study to perform MR acquisition. A fluorescence microscope with long working distance objective was mounted on the top of a custom-designed chamber that keeps the organotypic culture vital, and the MR system was mounted on the bottom of the chamber to achieve real-time simultaneous calcium fluorescence optical imaging and MR acquisition on the same specimen. In this study, the reliability and performance of the proposed test bed were demonstrated by a conventional CPMG MR sequence acquired simultaneously with calcium imaging, which is a well-characterized measurement of neuronal activity. This experimental design will make it possible to correlate directly the other candidate functional MR signals to the optical indicia of neuronal activity in the future.
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Affiliation(s)
- Ruiliang Bai
- Section on Tissue Biophysics and Biomimetics, PPITS, NICHD, National Institutes of Health, Bethesda, Maryland, USA
- Biophysics Program, Institute for Physical Science and Technology, University of Maryland, College Park, USA
| | - Andreas Klaus
- Section on Critical Brain Dynamics, LSN, NIMH, National Institutes of Health, Bethesda, Maryland, USA
| | - Tim Bellay
- Section on Critical Brain Dynamics, LSN, NIMH, National Institutes of Health, Bethesda, Maryland, USA
| | - Craig Stewart
- Section on Critical Brain Dynamics, LSN, NIMH, National Institutes of Health, Bethesda, Maryland, USA
| | - Sinisa Pajevic
- Mathematical and Statistical Computing Laboratory, Division of Computational Bioscience, Center for Information Technology, NIH, Bethesda, Maryland, USA
| | - Uri Nevo
- Department of Biomedical Engineering, Tel-Aviv University, Tel-Aviv, Israel
| | - Hellmut Merkle
- Laboratory for Functional and Molecular Imaging, NINDS, National Institutes of Health, Bethesda, Maryland, USA
| | - Dietmar Plenz
- Section on Critical Brain Dynamics, LSN, NIMH, National Institutes of Health, Bethesda, Maryland, USA
| | - Peter J Basser
- Section on Tissue Biophysics and Biomimetics, PPITS, NICHD, National Institutes of Health, Bethesda, Maryland, USA
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Pu S, Nakagome K, Itakura M, Yamanashi T, Sugie T, Miura A, Satake T, Iwata M, Nagata I, Kaneko K. Self-reported social functioning and prefrontal hemodynamic responses during a cognitive task in schizophrenia. Psychiatry Res 2015; 234:121-9. [PMID: 26382107 DOI: 10.1016/j.pscychresns.2015.09.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 08/10/2015] [Accepted: 09/02/2015] [Indexed: 10/23/2022]
Abstract
Impaired social functioning is a characteristic of schizophrenia that affects patients' quality of life. The aim of the study was to assess prefrontal hemodynamic responses during a cognitive task and establish its influence on psychiatric symptoms, cognitive function, global functioning, and self-reported social functioning in patients with schizophrenia. Thirty-three patients with schizophrenia and 30 age-and sex-matched healthy controls participated in the study. We measured hemodynamic responses in the prefrontal and superior temporal cortical surface areas with 52-channel near-infrared spectroscopy (NIRS) during a verbal fluency task (VFT). Self-reported social functioning was assessed using the Social Functioning Scale (SFS). Regional hemodynamic responses were significantly smaller in the prefrontal and temporal regions in subjects with schizophrenia than in the controls, and prefrontal hemodynamic responses during the VFT showed a strong correlation with SFS total scores. These results suggest an association between self-reported social functioning and prefrontal activation in subjects with schizophrenia. The present study provides evidence that NIRS imaging could be helpful in understanding the neural basis of social functioning.
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Affiliation(s)
- Shenghong Pu
- Division of Neuropsychiatry, Department of Brain and Neuroscience, Tottori University Faculty of Medicine, 36-1 Nishi-cho, Yonago, Tottori 683-8504, Japan.
| | - Kazuyuki Nakagome
- National Center of Neurology and Psychiatry, 4-1-1 Ogawa-Higashi, Kodaira, Tokyo 187-8551, Japan
| | - Masashi Itakura
- Division of Neuropsychiatry, Department of Brain and Neuroscience, Tottori University Faculty of Medicine, 36-1 Nishi-cho, Yonago, Tottori 683-8504, Japan
| | - Takehiko Yamanashi
- Division of Neuropsychiatry, Department of Brain and Neuroscience, Tottori University Faculty of Medicine, 36-1 Nishi-cho, Yonago, Tottori 683-8504, Japan
| | - Takuya Sugie
- Division of Neuropsychiatry, Department of Brain and Neuroscience, Tottori University Faculty of Medicine, 36-1 Nishi-cho, Yonago, Tottori 683-8504, Japan
| | - Akehiko Miura
- Division of Neuropsychiatry, Department of Brain and Neuroscience, Tottori University Faculty of Medicine, 36-1 Nishi-cho, Yonago, Tottori 683-8504, Japan
| | - Takahiro Satake
- Division of Neuropsychiatry, Department of Brain and Neuroscience, Tottori University Faculty of Medicine, 36-1 Nishi-cho, Yonago, Tottori 683-8504, Japan
| | - Masaaki Iwata
- Division of Neuropsychiatry, Department of Brain and Neuroscience, Tottori University Faculty of Medicine, 36-1 Nishi-cho, Yonago, Tottori 683-8504, Japan
| | - Izumi Nagata
- Division of Neuropsychiatry, Department of Brain and Neuroscience, Tottori University Faculty of Medicine, 36-1 Nishi-cho, Yonago, Tottori 683-8504, Japan
| | - Koichi Kaneko
- Division of Neuropsychiatry, Department of Brain and Neuroscience, Tottori University Faculty of Medicine, 36-1 Nishi-cho, Yonago, Tottori 683-8504, Japan
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Balconi M, Molteni E. Past and future of near-infrared spectroscopy in studies of emotion and social neuroscience. JOURNAL OF COGNITIVE PSYCHOLOGY 2015. [DOI: 10.1080/20445911.2015.1102919] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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He JW, Liu H, Peng YB. The Scalp Confounds Near-Infrared Signal from Rat Brain Following Innocuous and Noxious Stimulation. Brain Sci 2015; 5:387-99. [PMID: 26426058 PMCID: PMC4701019 DOI: 10.3390/brainsci5040387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Revised: 09/02/2015] [Accepted: 09/11/2015] [Indexed: 11/16/2022] Open
Abstract
Functional near-infrared imaging (fNIRI) is a non-invasive, low-cost and highly portable technique for assessing brain activity and functions. Both clinical and experimental evidence suggest that fNIRI is able to assess brain activity at associated regions during pain processing, indicating a strong possibility of using fNIRI-derived brain activity pattern as a biomarker for pain. However, it remains unclear how, especially in small animals, the scalp influences fNIRI signal in pain processing. Previously, we have shown that the use of a multi-channel system improves the spatial resolution of fNIRI in rats (without the scalp) during pain processing. Our current work is to investigate a scalp effect by comparing with new data from rats with the scalp during innocuous or noxious stimulation (n = 6). Results showed remarkable stimulus-dependent differences between the no-scalp and intact-scalp groups. In conclusion, the scalp confounded the fNIRI signal in pain processing likely via an autonomic mechanism; the scalp effect should be a critical factor in image reconstruction and data interpretation.
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Affiliation(s)
- Ji-Wei He
- Departments of Psychology, University of Texas at Arlington, Arlington, TX 76019, USA.
- Department of Neurological Surgery, University of California San Francisco, 1700 Owens Street, San Francisco, CA 94158, USA.
| | - Hanli Liu
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX 76019, USA.
| | - Yuan Bo Peng
- Departments of Psychology, University of Texas at Arlington, Arlington, TX 76019, USA.
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Corroyer-Dulmont A, Chakhoyan A, Collet S, Durand L, MacKenzie ET, Petit E, Bernaudin M, Touzani O, Valable S. Imaging Modalities to Assess Oxygen Status in Glioblastoma. Front Med (Lausanne) 2015; 2:57. [PMID: 26347870 PMCID: PMC4541402 DOI: 10.3389/fmed.2015.00057] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Accepted: 08/03/2015] [Indexed: 11/13/2022] Open
Abstract
Hypoxia, the result of an inadequacy between a disorganized and functionally impaired vasculature and the metabolic demand of tumor cells, is a feature of glioblastoma. Hypoxia promotes the aggressiveness of these tumors and, equally, negatively correlates with a decrease in outcome. Tools to characterize oxygen status are essential for the therapeutic management of patients with glioblastoma (i) to refine prognosis, (ii) to adapt the treatment regimen, and (iii) to assess the therapeutic efficacy. While methods that are focal and invasive in nature are of limited use, non-invasive imaging technologies have been developed. Each of these technologies is characterized by its singular advantages and limitations in terms of oxygenation status in glioblastoma. The aim of this short review is, first, to focus on the interest to characterize hypoxia for a better therapeutic management of patients and, second, to discuss recent and pertinent approaches for the assessment of oxygenation/hypoxia and their direct implication for patient care.
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Affiliation(s)
- Aurélien Corroyer-Dulmont
- CNRS, UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; CEA, Direction des Sciences du Vivant (DSV)/Institut d'Imagerie Biomédicale (I2BM), UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; Université de Caen Normandie, UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; Esplanade de la Paix, Normandie Université , Caen , France
| | - Ararat Chakhoyan
- CNRS, UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; CEA, Direction des Sciences du Vivant (DSV)/Institut d'Imagerie Biomédicale (I2BM), UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; Université de Caen Normandie, UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; Esplanade de la Paix, Normandie Université , Caen , France
| | - Solène Collet
- CNRS, UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; CEA, Direction des Sciences du Vivant (DSV)/Institut d'Imagerie Biomédicale (I2BM), UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; Université de Caen Normandie, UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; Esplanade de la Paix, Normandie Université , Caen , France
| | - Lucile Durand
- CNRS, UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; CEA, Direction des Sciences du Vivant (DSV)/Institut d'Imagerie Biomédicale (I2BM), UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; Université de Caen Normandie, UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; Esplanade de la Paix, Normandie Université , Caen , France
| | - Eric T MacKenzie
- CNRS, UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; CEA, Direction des Sciences du Vivant (DSV)/Institut d'Imagerie Biomédicale (I2BM), UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; Université de Caen Normandie, UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; Esplanade de la Paix, Normandie Université , Caen , France
| | - Edwige Petit
- CNRS, UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; CEA, Direction des Sciences du Vivant (DSV)/Institut d'Imagerie Biomédicale (I2BM), UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; Université de Caen Normandie, UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; Esplanade de la Paix, Normandie Université , Caen , France
| | - Myriam Bernaudin
- CNRS, UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; CEA, Direction des Sciences du Vivant (DSV)/Institut d'Imagerie Biomédicale (I2BM), UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; Université de Caen Normandie, UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; Esplanade de la Paix, Normandie Université , Caen , France
| | - Omar Touzani
- CNRS, UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; CEA, Direction des Sciences du Vivant (DSV)/Institut d'Imagerie Biomédicale (I2BM), UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; Université de Caen Normandie, UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; Esplanade de la Paix, Normandie Université , Caen , France
| | - Samuel Valable
- CNRS, UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; CEA, Direction des Sciences du Vivant (DSV)/Institut d'Imagerie Biomédicale (I2BM), UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; Université de Caen Normandie, UMR 6301-Imagerie et stratégies thérapeutiques des pathologies cérébrales et tumorales (ISTCT), CERVOxy group, GIP Cyceron , Caen , France ; Esplanade de la Paix, Normandie Université , Caen , France
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Lu CF, Liu YC, Yang YR, Wu YT, Wang RY. Maintaining Gait Performance by Cortical Activation during Dual-Task Interference: A Functional Near-Infrared Spectroscopy Study. PLoS One 2015; 10:e0129390. [PMID: 26079605 PMCID: PMC4469417 DOI: 10.1371/journal.pone.0129390] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Accepted: 05/07/2015] [Indexed: 11/21/2022] Open
Abstract
In daily life, mobility requires walking while performing a cognitive or upper-extremity motor task. Although previous studies have evaluated the effects of dual tasks on gait performance, few studies have evaluated cortical activation and its association with gait disturbance during dual tasks. In this study, we simultaneously assessed gait performance and cerebral oxygenation in the bilateral prefrontal cortices (PFC), premotor cortices (PMC), and supplemental motor areas (SMA), using functional near-infrared spectroscopy, in 17 young adults performing dual tasks. Each participant was evaluated while performing normal-pace walking (NW), walking while performing a cognitive task (WCT), and walking while performing a motor task (WMT). Our results indicated that the left PFC exhibited the strongest and most sustained activation during WCT, and that NW and WMT were associated with minor increases in oxygenation levels during their initial phases. We observed increased activation in channels in the SMA and PMC during WCT and WMT. Gait data indicated that WCT and WMT both caused reductions in walking speed, but these reductions resulted from differing alterations in gait properties. WCT was associated with significant changes in cadence, stride time, and stride length, whereas WMT was associated with reductions in stride length only. During dual-task activities, increased activation of the PMC and SMA correlated with declines in gait performance, indicating a control mechanism for maintaining gait performance during dual tasks. Thus, the regulatory effects of cortical activation on gait behavior enable a second task to be performed while walking.
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Affiliation(s)
- Chia-Feng Lu
- Translational Imaging Research Center, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
- Department of Radiology, School of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
- Department of Physical Therapy and Assistive Technology, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Yan-Ci Liu
- Department of Physical Therapy and Assistive Technology, National Yang-Ming University, Taipei, Taiwan, ROC
| | - Yea-Ru Yang
- Department of Physical Therapy and Assistive Technology, National Yang-Ming University, Taipei, Taiwan, ROC
- Taipei City Hospital, Taipei, Taiwan, ROC
| | - Yu-Te Wu
- Institute of Biophotonics, National Yang-Ming University, Taipei, Taiwan, ROC
- Department of Biomedical Imaging and Radiological Sciences, National Yang-Ming University, Taipei, Taiwan, ROC
- Brain Research Center, National Yang-Ming University, Taipei, Taiwan, ROC
- * E-mail: (Y-TW); (R-YW)
| | - Ray-Yau Wang
- Department of Physical Therapy and Assistive Technology, National Yang-Ming University, Taipei, Taiwan, ROC
- * E-mail: (Y-TW); (R-YW)
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Ward LM, Aitchison RT, Tawse M, Simmers AJ, Shahani U. Reduced Haemodynamic Response in the Ageing Visual Cortex Measured by Absolute fNIRS. PLoS One 2015; 10:e0125012. [PMID: 25909849 PMCID: PMC4409147 DOI: 10.1371/journal.pone.0125012] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Accepted: 03/19/2015] [Indexed: 11/19/2022] Open
Abstract
The effect of healthy ageing on visual cortical activation is still to be fully explored. This study aimed to elucidate whether the haemodynamic response (HDR) of the visual cortex altered as a result of ageing. Visually normal (healthy) participants were presented with a simple visual stimulus (reversing checkerboard). Full optometric screening was implemented to identify two age groups: younger adults (n = 12, mean age 21) and older adults (n = 13, mean age 71). Frequency-domain Multi-distance (FD-MD) functional Near-Infrared Spectroscopy (fNIRS) was used to measure absolute changes in oxygenated [HbO] and deoxygenated [HbR] haemoglobin concentrations in the occipital cortices. Utilising a slow event-related design, subjects viewed a full field reversing checkerboard with contrast and check size manipulations (15 and 30 minutes of arc, 50% and 100% contrast). Both groups showed the characteristic response of increased [HbO] and decreased [HbR] during stimulus presentation. However, older adults produced a more varied HDR and often had comparable levels of [HbO] and [HbR] during both stimulus presentation and baseline resting state. Younger adults had significantly greater concentrations of both [HbO] and [HbR] in every investigation regardless of the type of stimulus displayed (p<0.05). The average variance associated with this age-related effect for [HbO] was 88% and [HbR] 91%. Passive viewing of a visual stimulus, without any cognitive input, showed a marked age-related decline in the cortical HDR. Moreover, regardless of stimulus parameters such as check size, the HDR was characterised by age. In concurrence with present neuroimaging literature, we conclude that the visual HDR decreases as healthy ageing proceeds.
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Affiliation(s)
- Laura McKernan Ward
- Department of Vision Sciences, Glasgow Caledonian University, Glasgow, United Kingdom
- * E-mail:
| | - Ross Thomas Aitchison
- Department of Vision Sciences, Glasgow Caledonian University, Glasgow, United Kingdom
| | - Melisa Tawse
- Department of Vision Sciences, Glasgow Caledonian University, Glasgow, United Kingdom
| | - Anita Jane Simmers
- Department of Vision Sciences, Glasgow Caledonian University, Glasgow, United Kingdom
| | - Uma Shahani
- Department of Vision Sciences, Glasgow Caledonian University, Glasgow, United Kingdom
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Helmich I, Holle H, Rein R, Lausberg H. Brain oxygenation patterns during the execution of tool use demonstration, tool use pantomime, and body-part-as-object tool use. Int J Psychophysiol 2015; 96:1-7. [DOI: 10.1016/j.ijpsycho.2015.03.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 01/10/2015] [Accepted: 03/02/2015] [Indexed: 11/27/2022]
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Celie BM, Boone J, Smet JE, Vanlander AV, De Bleecker JL, Van Coster RN, Bourgois JG. Forearm deoxyhemoglobin and deoxymyoglobin (deoxy[Hb + Mb]) measured by near-infrared spectroscopy (NIRS) using a handgrip test in mitochondrial myopathy. APPLIED SPECTROSCOPY 2015; 69:342-347. [PMID: 25665184 DOI: 10.1366/14-07604] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The purpose of this paper is to test whether peripheral oxygenation responses measured with near-infrared spectroscopy (NIRS) would differ between patients suffering from mitochondrial myopathy (MM) and healthy controls during an incremental handgrip exercise test. Two groups of subjects were studied: 11 patients with MM and 11 age- and gender-matched untrained healthy controls. A handgrip exercise until exhaustion protocol was used consisting of 2 min periods of work (½ Hz) at different intensities, separated by a 60 s rest period. The changes in deoxyhemoglobin and deoxymyoglobin (deoxy[Hb + Mb]) during each work step were expressed in percent to the maximum deoxy[Hb + Mb]-value measured during arterial occlusion in forearm muscles. A repeated measures analysis of variance was used to compare the increase in deoxy[Hb + Mb] between MM patients and controls with increasing intensity. Statistical analysis revealed a significant difference between both populations (P < 0.001) indicating that the increase in deoxy[Hb + Mb] showed a significantly different pattern in the two populations. In the post hoc analysis significant lower deoxy[Hb + Mb] -values were found for MM patients at every intensity. The results of this paper show significantly different skeletal muscle oxygenation responses, measured with an optical method as NIRS, between MM patients and age- and gender-matched healthy subjects at submaximal and maximal level during an incremental handgrip exercise. This optical method is thus a valuable tool to assess differences in peripheral oxygenation. Moreover, this method could be used as an evaluation tool for follow up in interventional pharmacological studies and rehabilitation programs.
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Affiliation(s)
- Bert M Celie
- Department of Movement and Sports Sciences, Ghent University, Watersportlaan 2, 9000 Ghent, Belgium
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Dupuy O, Gauthier CJ, Fraser SA, Desjardins-Crèpeau L, Desjardins M, Mekary S, Lesage F, Hoge RD, Pouliot P, Bherer L. Higher levels of cardiovascular fitness are associated with better executive function and prefrontal oxygenation in younger and older women. Front Hum Neurosci 2015; 9:66. [PMID: 25741267 PMCID: PMC4332308 DOI: 10.3389/fnhum.2015.00066] [Citation(s) in RCA: 124] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Accepted: 01/27/2015] [Indexed: 01/10/2023] Open
Abstract
AIM Many studies have suggested that physical exercise training improves cognition and more selectively executive functions. There is a growing interest to clarify the neurophysiological mechanisms that underlie this effect. The aim of the current study was to evaluate the neurophysiological changes in cerebral oxygenation associated with physical fitness level and executive functions. METHOD In this study, 22 younger and 36 older women underwent a maximal graded continuous test (i.e., [Formula: see text]O2max ) in order to classify them into a fitness group (higher vs. lower fit). All participants completed neuropsychological paper and pencil testing and a computerized Stroop task (which contained executive and non-executive conditions) in which the change in prefrontal cortex oxygenation was evaluated with near infrared spectroscopy (NIRS). RESULTS Our findings revealed a Fitness × Condition interaction (p < 0.05) such that higher fit women scored better on measures of executive functions than lower fit women. In comparison to lower fit women, higher fit women had faster reaction times in the Executive condition of the computerized Stroop task. No significant effect was observed in the non-executive condition of the test and no interactions were found with age. In measures of cerebral oxygenation (ΔHbT and ΔHbO2), we found a main effect of fitness on cerebral oxygenation during the Stroop task such that only high fit women demonstrated a significant increase in the right inferior frontal gyrus. DISCUSSION/CONCLUSION Higher fit individuals who demonstrate better cardiorespiratory functions (as measured by [Formula: see text]O2max ) show faster reaction times and greater cerebral oxygenation in the right inferior frontal gyrus than women with lower fitness levels. The lack of interaction with age, suggests that good cardiorespiratory functions can have a positive impact on cognition, regardless of age.
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Affiliation(s)
- Olivier Dupuy
- Centre PERFORM, Université ConcordiaMontreal, QC, Canada
- Centre de Recherche de l'Institut de Gériatrie de MontréalMontreal, QC, Canada
- Laboratoire MOVE (EA6314), Faculté des Sciences du Sport de Poitiers, Université de PoitiersPoitiers, France
| | - Claudine J. Gauthier
- Centre de Recherche de l'Institut de Gériatrie de MontréalMontreal, QC, Canada
- Max Planck Institute for Human Cognitive and Brain SciencesLeipzig, Germany
| | - Sarah A. Fraser
- Centre de Recherche de l'Institut de Gériatrie de MontréalMontreal, QC, Canada
- Department of Social Work, McGill UniversityMontreal, QC, Canada
| | | | - Michèle Desjardins
- Centre de Recherche de l'Institut de Gériatrie de MontréalMontreal, QC, Canada
- Departement de Physiologie, Université de MontréalMontreal, QC, Canada
| | - Said Mekary
- Centre de Recherche de l'Institut de Gériatrie de MontréalMontreal, QC, Canada
| | | | - Rick D. Hoge
- Centre de Recherche de l'Institut de Gériatrie de MontréalMontreal, QC, Canada
- Departement de Physiologie, Université de MontréalMontreal, QC, Canada
| | | | - Louis Bherer
- Centre PERFORM, Université ConcordiaMontreal, QC, Canada
- Centre de Recherche de l'Institut de Gériatrie de MontréalMontreal, QC, Canada
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Association between social functioning and prefrontal hemodynamic responses in elderly adults. Behav Brain Res 2014; 272:32-9. [DOI: 10.1016/j.bbr.2014.06.052] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 06/24/2014] [Accepted: 06/24/2014] [Indexed: 11/19/2022]
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Ferreri L, Bigand E, Perrey S, Bugaïska A. The promise of Near-Infrared Spectroscopy (NIRS) for psychological research: A brief review. ANNEE PSYCHOLOGIQUE 2014. [DOI: 10.3917/anpsy.143.0537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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72
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The promise of Near-Infrared Spectroscopy (NIRS) for psychological research: A brief review. ANNEE PSYCHOLOGIQUE 2014. [DOI: 10.4074/s0003503314003054] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Cortical implication in lower voluntary muscle force production in non-hypoxemic COPD patients. PLoS One 2014; 9:e100961. [PMID: 24971775 PMCID: PMC4074123 DOI: 10.1371/journal.pone.0100961] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 06/02/2014] [Indexed: 11/19/2022] Open
Abstract
Recent studies have shown that muscle alterations cannot totally explain peripheral muscle weakness in COPD. Cerebral abnormalities in COPD are well documented but have never been implicated in muscle torque production. The purpose of this study was to assess the neural correlates of quadriceps torque control in COPD patients. Fifteen patients (FEV1 54.1±3.6% predicted) and 15 age- and sex-matched healthy controls performed maximal (MVCs) and submaximal (SVCs) voluntary contractions at 10, 30 and 50% of the maximal voluntary torque of the knee extensors. Neural activity was quantified with changes in functional near-infrared spectroscopy oxyhemoglobin (fNIRS-HbO) over the contralateral primary motor (M1), primary somatosensory (S1), premotor (PMC) and prefrontal (PFC) cortical areas. In parallel to the lower muscle torque, the COPD patients showed lower increase in HbO than healthy controls over the M1 (p<0.05), PMC (p<0.05) and PFC areas (p<0.01) during MVCs. In addition, they exhibited lower HbO changes over the M1 (p<0.01), S1 (p<0.05) and PMC (p<0.01) areas during SVCs at 50% of maximal torque and altered motor control characterized by higher torque fluctuations around the target. The results show that low muscle force production is found in a context of reduced motor cortex activity, which is consistent with central nervous system involvement in COPD muscle weakness.
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A pilot study on the effects of cognitive remediation on hemodynamic responses in the prefrontal cortices of patients with schizophrenia: a multi-channel near-infrared spectroscopy study. Schizophr Res 2014; 153:87-95. [PMID: 24556471 DOI: 10.1016/j.schres.2014.01.031] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2013] [Revised: 01/17/2014] [Accepted: 01/19/2014] [Indexed: 02/04/2023]
Abstract
The regional neuronal changes taking place between before and after cognitive rehabilitation are still not characterized in schizophrenia patients. In addition, it is not known whether these regional changes are predictive or correlated with treatment response. We conducted a preliminary quasi-experimental study to investigate the effects of a Neuropsychological Educational Approach to Cognitive Remediation (NEAR), one of the cognitive remediation therapies, on neurocognitive functioning assessed by the Japanese version of the Brief Assessment of Cognition in Schizophrenia (BACS-J), and on prefrontal and temporal hemodynamic responses during working memory (WM) task (2-back, letter version) using 52-channel near-infrared spectroscopy (NIRS). We assessed 19 patients with schizophrenia or schizoaffective disorder twice with an interval of 6months. Moreover, taking into consideration the possible practice effect, we assessed 12 control patients twice with an interval of 6months. The NEAR group, in comparison with the control group, showed significant improvement in two subcomponents of BACS-J, that is, motor speed and executive function along with the composite scores. The NEAR group also showed a significant increase in brain activation in the bilateral cortical regions associated with WM, and in comparison with the control group the between-group differences were restricted to the right frontopolar area. In addition, the amount of enhancement in some cognitive subcomponents was positively correlated with the magnitude of an increase in hemodynamic response during WM task predominantly in the right hemispheres. These findings suggest that neurocognitive deficits in schizophrenia and their neural dysfunction may be improved by NEAR, and NIRS may be a useful tool to assess the changes of the neural activity underlying the improvement of neurocognitive functioning elicited by neurocognitive rehabilitation.
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Statistical analysis of fNIRS data: A comprehensive review. Neuroimage 2014; 85 Pt 1:72-91. [DOI: 10.1016/j.neuroimage.2013.06.016] [Citation(s) in RCA: 248] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 04/20/2013] [Accepted: 06/07/2013] [Indexed: 11/16/2022] Open
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Alderliesten T, De Vis J, Lemmers P, van Bel F, Benders M, Hendrikse J, Petersen E. Simultaneous quantitative assessment of cerebral physiology using respiratory-calibrated MRI and near-infrared spectroscopy in healthy adults. Neuroimage 2014; 85 Pt 1:255-63. [DOI: 10.1016/j.neuroimage.2013.07.015] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 07/03/2013] [Accepted: 07/04/2013] [Indexed: 10/26/2022] Open
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Sato H, Yahata N, Funane T, Takizawa R, Katura T, Atsumori H, Nishimura Y, Kinoshita A, Kiguchi M, Koizumi H, Fukuda M, Kasai K. A NIRS–fMRI investigation of prefrontal cortex activity during a working memory task. Neuroimage 2013; 83:158-73. [PMID: 23792984 DOI: 10.1016/j.neuroimage.2013.06.043] [Citation(s) in RCA: 209] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 05/29/2013] [Accepted: 06/12/2013] [Indexed: 11/17/2022] Open
Affiliation(s)
- Hiroki Sato
- Hitachi, Ltd., Central Research Laboratory, Hatoyama, Saitama 350-0395, Japan.
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Laughlin MH, Davis MJ, Secher NH, van Lieshout JJ, Arce-Esquivel AA, Simmons GH, Bender SB, Padilla J, Bache RJ, Merkus D, Duncker DJ. Peripheral circulation. Compr Physiol 2013; 2:321-447. [PMID: 23728977 DOI: 10.1002/cphy.c100048] [Citation(s) in RCA: 174] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Blood flow (BF) increases with increasing exercise intensity in skeletal, respiratory, and cardiac muscle. In humans during maximal exercise intensities, 85% to 90% of total cardiac output is distributed to skeletal and cardiac muscle. During exercise BF increases modestly and heterogeneously to brain and decreases in gastrointestinal, reproductive, and renal tissues and shows little to no change in skin. If the duration of exercise is sufficient to increase body/core temperature, skin BF is also increased in humans. Because blood pressure changes little during exercise, changes in distribution of BF with incremental exercise result from changes in vascular conductance. These changes in distribution of BF throughout the body contribute to decreases in mixed venous oxygen content, serve to supply adequate oxygen to the active skeletal muscles, and support metabolism of other tissues while maintaining homeostasis. This review discusses the response of the peripheral circulation of humans to acute and chronic dynamic exercise and mechanisms responsible for these responses. This is accomplished in the context of leading the reader on a tour through the peripheral circulation during dynamic exercise. During this tour, we consider what is known about how each vascular bed controls BF during exercise and how these control mechanisms are modified by chronic physical activity/exercise training. The tour ends by comparing responses of the systemic circulation to those of the pulmonary circulation relative to the effects of exercise on the regional distribution of BF and mechanisms responsible for control of resistance/conductance in the systemic and pulmonary circulations.
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Affiliation(s)
- M Harold Laughlin
- Department of Medical Pharmacology and Physiology, and the Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri, USA.
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Lee CH, Sugiyama T, Kataoka A, Kudo A, Fujino F, Chen YW, Mitsuyama Y, Nomura S, Yoshioka T. Analysis for distinctive activation patterns of pain and itchy in the human brain cortex measured using near infrared spectroscopy (NIRS). PLoS One 2013; 8:e75360. [PMID: 24098378 PMCID: PMC3789686 DOI: 10.1371/journal.pone.0075360] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Accepted: 08/13/2013] [Indexed: 11/18/2022] Open
Abstract
Pain and itch are closely related sensations, yet qualitatively quite distinct. Despite recent advances in brain imaging techniques, identifying the differences between pain and itch signals in the brain cortex is difficult due to continuous temporal and spatial changes in the signals. The high spatial resolution of positron emission tomography (PET) and functional magnetic resonance imaging (fMRI) has substantially advanced research of pain and itch, but these are uncomfortable because of expensiveness, importability and the limited operation in the shielded room. Here, we used near infrared spectroscopy (NIRS), which has more conventional usability. NIRS can be used to visualize dynamic changes in oxygenated hemoglobin and deoxyhemoglobin concentrations in the capillary networks near activated neural circuits in real-time as well as fMRI. We observed distinct activation patterns in the frontal cortex for acute pain and histamine-induced itch. The prefrontal cortex exhibited a pain-related and itch-related activation pattern of blood flow in each subject. Although it looked as though that activation pattern for pain and itching was different in each subject, further cross correlation analysis of NIRS signals between each channels showed an overall agreement with regard to prefrontal area involvement. As a result, pain-related and itch-related blood flow responses (delayed responses in prefrontal area) were found to be clearly different between pain (τ = +18.7 sec) and itch (τ = +0.63 sec) stimulation. This is the first pilot study to demonstrate the temporal and spatial separation of a pain-induced blood flow and an itch-induced blood flow in human cortex during information processing.
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Affiliation(s)
- Chih-Hung Lee
- Department of Dermatology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Takashi Sugiyama
- Advanced Research Institute for Bioscience, Waseda University, Tokyo, Japan
| | - Aiko Kataoka
- Department of Dental Hygiene, Kanagawa Dental University Junior College, Yokosuka, Japan
| | - Ayako Kudo
- Department of Dental Hygiene, Kanagawa Dental University Junior College, Yokosuka, Japan
| | - Fukue Fujino
- Department of Dental Hygiene, Kanagawa Dental University Junior College, Yokosuka, Japan
| | - Yu-Wen Chen
- Department of Nuclear Medicine, Kaohsiung Medical University, Chung-Ho Memorial Hospital, Kaohsiung, Taiwan
| | - Yuki Mitsuyama
- Graduate School of Human Sciences, Waseda University, Saitama, Japan
| | - Shinobu Nomura
- Faculty of Human Sciences, Waseda University, Saitama, Japan
| | - Tohru Yoshioka
- Graduate Institute of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- * E-mail:
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80
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Krainik A, Villien M, Troprès I, Attyé A, Lamalle L, Bouvier J, Pietras J, Grand S, Le Bas JF, Warnking J. Functional imaging of cerebral perfusion. Diagn Interv Imaging 2013; 94:1259-78. [PMID: 24011870 DOI: 10.1016/j.diii.2013.08.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The functional imaging of perfusion enables the study of its properties such as the vasoreactivity to circulating gases, the autoregulation and the neurovascular coupling. Downstream from arterial stenosis, this imaging can estimate the vascular reserve and the risk of ischemia in order to adapt the therapeutic strategy. This method reveals the hemodynamic disorders in patients suffering from Alzheimer's disease or with arteriovenous malformations revealed by epilepsy. Functional MRI of the vasoreactivity also helps to better interpret the functional MRI activation in practice and in clinical research.
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Affiliation(s)
- A Krainik
- Clinique universitaire de neuroradiologie et IRM, CHU de Grenoble, CS 10217, 38043 Grenoble cedex, France; Inserm U836, université Joseph-Fourier, site santé, chemin Fortuné-Ferrini, 38706 La Tronche cedex, France; UMS IRMaGe, unité IRM 3T recherche, CHU de Grenoble, CS 10217, 38043 Grenoble cedex 9, France.
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81
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A wearable multi-channel fNIRS system for brain imaging in freely moving subjects. Neuroimage 2013; 85 Pt 1:64-71. [PMID: 23810973 DOI: 10.1016/j.neuroimage.2013.06.062] [Citation(s) in RCA: 236] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Revised: 06/19/2013] [Accepted: 06/20/2013] [Indexed: 11/21/2022] Open
Abstract
Functional near infrared spectroscopy (fNIRS) is a versatile neuroimaging tool with an increasing acceptance in the neuroimaging community. While often lauded for its portability, most of the fNIRS setups employed in neuroscientific research still impose usage in a laboratory environment. We present a wearable, multi-channel fNIRS imaging system for functional brain imaging in unrestrained settings. The system operates without optical fiber bundles, using eight dual wavelength light emitting diodes and eight electro-optical sensors, which can be placed freely on the subject's head for direct illumination and detection. Its performance is tested on N=8 subjects in a motor execution paradigm performed under three different exercising conditions: (i) during outdoor bicycle riding, (ii) while pedaling on a stationary training bicycle, and (iii) sitting still on the training bicycle. Following left hand gripping, we observe a significant decrease in the deoxyhemoglobin concentration over the contralateral motor cortex in all three conditions. A significant task-related ΔHbO2 increase was seen for the non-pedaling condition. Although the gross movements involved in pedaling and steering a bike induced more motion artifacts than carrying out the same task while sitting still, we found no significant differences in the shape or amplitude of the HbR time courses for outdoor or indoor cycling and sitting still. We demonstrate the general feasibility of using wearable multi-channel NIRS during strenuous exercise in natural, unrestrained settings and discuss the origins and effects of data artifacts. We provide quantitative guidelines for taking condition-dependent signal quality into account to allow the comparison of data across various levels of physical exercise. To the best of our knowledge, this is the first demonstration of functional NIRS brain imaging during an outdoor activity in a real life situation in humans.
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82
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Hassanpour MS, White BR, Eggebrecht AT, Ferradal SL, Snyder AZ, Culver JP. Statistical analysis of high density diffuse optical tomography. Neuroimage 2013; 85 Pt 1:104-16. [PMID: 23732886 DOI: 10.1016/j.neuroimage.2013.05.105] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2013] [Revised: 05/03/2013] [Accepted: 05/21/2013] [Indexed: 11/30/2022] Open
Abstract
High density diffuse optical tomography (HD-DOT) is a noninvasive neuroimaging modality with moderate spatial resolution and localization accuracy. Due to portability and wear-ability advantages, HD-DOT has the potential to be used in populations that are not amenable to functional magnetic resonance imaging (fMRI), such as hospitalized patients and young children. However, whereas the use of event-related stimuli designs, general linear model (GLM) analysis, and imaging statistics are standardized and routine with fMRI, such tools are not yet common practice in HD-DOT. In this paper we adapt and optimize fundamental elements of fMRI analysis for application to HD-DOT. We show the use of event-related protocols and GLM de-convolution analysis in un-mixing multi-stimuli event-related HD-DOT data. Statistical parametric mapping (SPM) in the framework of a general linear model is developed considering the temporal and spatial characteristics of HD-DOT data. The statistical analysis utilizes a random field noise model that incorporates estimates of the local temporal and spatial correlations of the GLM residuals. The multiple-comparison problem is addressed using a cluster analysis based on non-stationary Gaussian random field theory. These analysis tools provide access to a wide range of experimental designs necessary for the study of the complex brain functions. In addition, they provide a foundation for understanding and interpreting HD-DOT results with quantitative estimates for the statistical significance of detected activation foci.
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Affiliation(s)
- Mahlega S Hassanpour
- Department of Physics, CB 1105, Washington University in St. Louis, One Brookings Drive, St. Louis, MO 63130-4899, USA; Department of Radiology, CB 8225, Washington University School of Medicine, 4525 Scott Ave., St. Louis, MO 63110, USA
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83
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Kohmura K, Iwamoto K, Aleksic B, Sasada K, Kawano N, Katayama H, Noda Y, Noda A, Iidaka T, Ozaki N. Effects of sedative antidepressants on prefrontal cortex activity during verbal fluency task in healthy subjects: a near-infrared spectroscopy study. Psychopharmacology (Berl) 2013; 226:75-81. [PMID: 23052571 DOI: 10.1007/s00213-012-2885-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2012] [Accepted: 09/15/2012] [Indexed: 11/29/2022]
Abstract
RATIONALE Japanese researchers have recently conducted studies using near-infrared spectroscopy (NIRS) to help diagnose psychiatric disorders based on changes in brain activity. However, the influence of psychotropic drugs on NIRS measurements has not been clarified. OBJECTIVE To assess the effects of sedative antidepressants on prefrontal cortex activity in healthy subjects using NIRS in a double-blinded, placebo-controlled, crossover trial. METHODS Nineteen healthy males received nocturnal doses of mirtazapine 15 mg, trazodone 25 mg, or placebo for eight consecutive days in rotation, with a washout period of more than 1 week between each rotation. Subjects performed a verbal fluency task during NIRS on a total of seven occasions during the study period: more than a week prior to receiving the first dose of the first medication; and on days 2 and 9 of each rotation. The number of words correctly generated during the task (behavioral performance) was also recorded. Stanford Sleepiness Scale (SSS) scores were determined each day. RESULTS Mirtazapine 15 mg significantly increased oxyhemoglobin (oxy-Hb) concentration change in NIRS on day 9, compared to trazodone 25 mg and placebo. Mirtazapine 15 mg significantly increased SSS on day 2, compared to the other conditions. No significant differences in behavioral performance were observed. CONCLUSIONS Administration of mirtazapine for eight consecutive days affected oxy-Hb changes on NIRS. This result indicates that researchers should consider how certain types of antidepressant could influence brain function when the brain activity of patients with psychiatric disorders is assessed.
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Affiliation(s)
- Kunihiro Kohmura
- Department of Psychiatry, Graduate School of Medicine, Nagoya University, 65 Tsurumai, Showa, Nagoya, Aichi, Japan
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84
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Santosa H, Hong KS. Asymmetry brain function in auditory cortex: a functional near-infrared spectroscopy study. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2013; 2013:1784-1786. [PMID: 24110054 DOI: 10.1109/embc.2013.6609867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Functional near-infrared spectroscopy (fNIRS) can measure the change of hemodynamic response, it enables to determine the concentration changes of oxy-hemoglobin and deoxy-hemoglobin. The aim in this paper is to investigate the forms of lateralization or asymmetry brain function in auditory cortex using fNIRS. This technique shows good promise for assessment of asymmetry functions in the auditory cortex.
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85
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Detectability of absorption and reduced scattering coefficients in frequency-domain measurements using a realistic head phantom. SENSORS 2012; 13:152-64. [PMID: 23262479 PMCID: PMC3574670 DOI: 10.3390/s130100152] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Revised: 12/17/2012] [Accepted: 12/18/2012] [Indexed: 11/17/2022]
Abstract
Detection limits of the changes in absorption and reduced scattering coefficients were investigated using a frequency-domain near-infrared system in a realistic head phantom. The results were quantified in terms of the maximum detectable depth for different activation volumes in the range of 0.8-20 microliters. The non-linear relation between the maximum detectable depth and the magnitude of changes in the absorption coefficient conform well with the Born approximation to the diffusion equation. The minimal detectable changes in the reduced scattering coefficient measured in terms of the phase signal were found to be approximately twice as large as that of the absorption coefficient using the AC signal for the same volume and at the same depth. The phase delay, which can be used to quantify the fast neuronal optical response in the human brain, showed a linear dependence on the reciprocal of the reduced scattering coefficient, as predicted by the Rytov approximation.
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86
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Yao J, Xia J, Maslov KI, Nasiriavanaki M, Tsytsarev V, Demchenko AV, Wang LV. Noninvasive photoacoustic computed tomography of mouse brain metabolism in vivo. Neuroimage 2012; 64:257-66. [PMID: 22940116 DOI: 10.1016/j.neuroimage.2012.08.054] [Citation(s) in RCA: 124] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Revised: 08/13/2012] [Accepted: 08/15/2012] [Indexed: 10/28/2022] Open
Abstract
We have demonstrated the feasibility of imaging mouse brain metabolism using photoacoustic computed tomography (PACT), a fast, noninvasive and functional imaging modality with optical contrast and acoustic resolution. Brain responses to forepaw stimulations were imaged transdermally and transcranially. 2-NBDG, which diffuses well across the blood-brain-barrier, provided exogenous contrast for photoacoustic imaging of glucose response. Concurrently, hemoglobin provided endogenous contrast for photoacoustic imaging of hemodynamic response. Glucose and hemodynamic responses were quantitatively decoupled by using two-wavelength measurements. We found that glucose uptake and blood perfusion around the somatosensory region of the contralateral hemisphere were both increased by stimulations, indicating elevated neuron activity. While the glucose response area was more homogenous and confined within the somatosensory region, the hemodynamic response area had a clear vascular pattern and spread wider than the somatosensory region. Our results demonstrate that 2-NBDG-enhanced PACT is a promising tool for noninvasive studies of brain metabolism.
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Affiliation(s)
- Junjie Yao
- Optical Imaging Laboratory, Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, MO 63130, USA
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87
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Kahlaoui K, Di Sante G, Barbeau J, Maheux M, Lesage F, Ska B, Joanette Y. Contribution of NIRS to the study of prefrontal cortex for verbal fluency in aging. BRAIN AND LANGUAGE 2012; 121:164-173. [PMID: 22285026 DOI: 10.1016/j.bandl.2011.11.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2010] [Revised: 10/12/2011] [Accepted: 11/07/2011] [Indexed: 05/31/2023]
Abstract
Healthy aging is characterized by a number of changes on brain structure and function. Several neuroimaging studies have shown an age-related reduction in hemispheric asymmetry on various cognitive tasks, a phenomenon captured by Cabeza (2002) in the Hemispheric Asymmetry Reduction in Older Adults (HAROLD) model. Although this phenomenon is supported by a range of neuroimaging data on memory and inhibitory processes, there is little evidence concerning changes in hemispheric asymmetry for language processing, and particularly word retrieval, which is assessed with verbal fluency task (VFT). This study aimed to investigate the age-related changes in cerebral oxygenation in the prefrontal cortex for both letter and category VFT, varying the complexity of the criteria (i.e., degree of productivity) and using near-infrared spectroscopy (NIRS). Sixteen younger and 16 older adults participated in this study. For both VF conditions, participants were instructed to pronounce as many nouns as possible as a function of high-productivity (e.g., "animals" or "L") or low-productivity (e.g., "flowers" or "V") criteria. Behavioral data (i.e., accuracy responses) showed comparable performance in younger and older adults for both VF conditions. However, NIRS data showed more reduced activation (i.e., significantly reduced increase in [O(2)Hb] and reduced decrease in [HHb]) in older than younger adults for both VFT. In addition, a bilateral effect was found for both groups, suggesting that VFT requires both executive and language functions. The results are discussed in the context of the current theories of aging.
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Affiliation(s)
- Karima Kahlaoui
- Centre de recherche, Institut universitaire de gériatrie de Montréal, Montréal, Canada.
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88
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Gagnon C, Desjardins-Crépeau L, Tournier I, Desjardins M, Lesage F, Greenwood CE, Bherer L. Near-infrared imaging of the effects of glucose ingestion and regulation on prefrontal activation during dual-task execution in healthy fasting older adults. Behav Brain Res 2012; 232:137-47. [PMID: 22487250 DOI: 10.1016/j.bbr.2012.03.039] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2011] [Revised: 03/17/2012] [Accepted: 03/22/2012] [Indexed: 01/24/2023]
Abstract
RATIONALE Glucose enhancing effects in older adults have mostly been observed for episodic memory, but have recently been found for attentional control performance. Yet, brain activation patterns underlying these effects are still unknown. OBJECTIVE The present study examined the acute effects of glucose ingestion on prefrontal brain activation during the execution of a divided attention task in fasting non-diabetic older adults. METHODS Twenty older adults (60 years and older) took part in the study that included two experimental sessions. After an overnight fast, participants received either a glucose drink (50 g) or a placebo (saccharin) drink, following which they completed a dual-task. During task execution, prefrontal activation was recorded with functional near-infrared spectroscopy (fNIRS). A repeated-measures design was used such that each participant served as his or her own control. The two experimental sessions were counterbalanced among participants and were performed two weeks apart. RESULTS When participants were in the glucose condition, they showed similar dual-task costs for both tasks, whereas in the placebo condition they prioritized one task over the other, with a significantly larger dual-task cost for the non-prioritized task (p<0.01). Differential brain activation was also observed in right ventral-lateral prefrontal regions for oxygenated hemoglobin and deoxygenated hemoglobin, with more activation apparent in the glucose condition (p<0.05). Furthermore, behavioral and activation data were influenced by individual differences in glucose regulation. CONCLUSIONS Glucose ingestion appears to momentarily enhance fasting seniors' capacity to coordinate more equally two concurrent tasks and this is reflected in brain activation patterns.
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Affiliation(s)
- Christine Gagnon
- Université du Québec à Montréal, Case postale 8888, succursale, Centre-Ville, Montréal, QC, H3C 3P8, Canada.
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89
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Senanayake E, Komber M, Nassef A, Massey N, Cooper G. Effective Cerebral Protection Using Near-Infrared Spectroscopy Monitoring with Antegrade Cerebral Perfusion During Aortic Surgery. J Card Surg 2012; 27:211-6. [DOI: 10.1111/j.1540-8191.2012.01420.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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90
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He JW, Tian F, Liu H, Peng YB. Cerebrovascular responses of the rat brain to noxious stimuli as examined by functional near-infrared whole brain imaging. J Neurophysiol 2012; 107:2853-65. [PMID: 22378174 DOI: 10.1152/jn.00050.2011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
While near-infrared (NIR) spectroscopy has been increasingly used to detect stimulated brain activities with an advantage of dissociating regional oxy- and deoxyhemoglobin concentrations simultaneously, it has not been utilized much in pain research. Here, we investigated and demonstrated the feasibility of using this technique to obtain whole brain hemodynamics in rats and speculated on the functional relevance of the NIR-based hemodynamic signals during pain processing. NIR signals were emitted and collected using a 26-optodes array on rat's dorsal skull surface after the removal of skin. Following the subcutaneous injection of formalin (50 μl, 3%) into a hindpaw, several isolable brain regions showed hemodynamic changes, including the anterior cingulate cortex, primary/secondary somatosensory cortexes, thalamus, and periaqueductal gray (n = 6). Time courses of hemodynamic changes in respective regions matched with the well-documented biphasic excitatory response. Surprisingly, an atypical pattern (i.e., a decrease in oxyhemoglobin concentration with a concomitant increase in deoxyhemoglobin concentration) was seen in phase II. In a separate group of rats with innocuous brush and noxious pinch of the same area (n = 11), results confirmed that the atypical pattern occurred more likely in the presence of nociception than nonpainful stimulation, suggesting it as a physiological substrate when the brain processes pain. In conclusion, the NIR whole brain imaging provides a useful alternative to study pain in vivo using small-animal models. Our results support the notion that neurovascular response patterns depend on stimuli, bringing attention to the interpretation of vascular-based neuroimaging data in studies of pain.
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Affiliation(s)
- Ji-Wei He
- Dept. of Psychology Univ. of Texas at Arlington, Arlington, TX 76019-0528, USA
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91
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Bastien D, Gallagher A, Tremblay J, Vannasing P, Thériault M, Lassonde M, Lepore F. Specific functional asymmetries of the human visual cortex revealed by functional near-infrared spectroscopy. Brain Res 2011; 1431:62-8. [PMID: 22137561 DOI: 10.1016/j.brainres.2011.11.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Revised: 11/02/2011] [Accepted: 11/03/2011] [Indexed: 10/15/2022]
Abstract
Based on multiple invasive reports and neuroimaging studies, it is well established that the cytoarchitecture of the visual cortex is related to its functional organization, namely, its retinotopy. The present study aimed to further investigate retinotopic mapping as well as specific vertical and horizontal functional asymmetries within the human visual cortex using functional near-infrared spectroscopy (fNIRS). Black and white wedge checkerboard stimuli were randomly presented to the four visual field (VF) quadrants of eight healthy adults in order to quantify and compare the localization and the amplitude of hemodynamic cortical responses to each VF quadrant. Results showed the expected activation in the contralateral hemisphere, with respect to the side of the stimulated quadrant. We also measured significantly stronger activations in the upper visual cortex when low hemifield stimuli were presented compared to activations in the lower visual cortex when upper hemifield stimuli were shown, especially when the stimulation was presented in the right visual field. These findings confirm the vertical asymmetry of the visual cortex previously reported by neuroimaging and behavioral studies. More importantly, the present work confirms the reliability of the fNIRS technique for functional mapping of the human brain.
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Affiliation(s)
- Danielle Bastien
- Centre de Recherche, Centre Hospitalier Universitaire Sainte-Justine, 3175 Chemin de la Côte Sainte-Catherine, Montréal, Canada H3T 1C5
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92
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Li H, Tak S, Ye JC. Lipschitz-Killing curvature based expected Euler characteristics for p-value correction in fNIRS. J Neurosci Methods 2011; 204:61-67. [PMID: 22074819 DOI: 10.1016/j.jneumeth.2011.10.016] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2011] [Revised: 09/09/2011] [Accepted: 10/18/2011] [Indexed: 11/30/2022]
Abstract
Functional near-infrared spectroscopy (fNIRS) is a non-invasive imaging approach for measuring brain activities based on changes in the cerebral concentrations of hemoglobin. Recently, statistical analysis based on a general linear model (GLM) has become popular. Here, to impose statistical significance on the activation detected by fNIRS, family-wise error (FWE) rate control is important. However, unlike fMRI, in which measurements are densely sampled on a regular lattice and Gaussian smoothing makes the resulting random field homogeneous, the random fields from fNIRS are inhomogeneous due to the interpolation from sparsely and irregularly distributed optode locations. Thus, tube formula based correction has been proposed to address this issue. However, Sun's tube formula cannot be used for general random fields such as F-statistics. To overcome these difficulties, we employ the expected Euler characteristic approach based on Lipschitz-Killing curvature (LKC) to control the family-wise error rate. We compared this correction method with Sun's tube formula for t-statistics to confirm the existing method. Based on this comparison, we show that covariance estimation should be modified to consider channel-wise least-square residual correlation. These new results supplement the existing tool of statistical parameter mapping for fNIRS.
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Affiliation(s)
- Hua Li
- Bio Imaging and Signal Processing Lab., Dept. of Bio and Brain Engineering, KAIST, 373-1 Guseong-dong Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Sungho Tak
- Bio Imaging and Signal Processing Lab., Dept. of Bio and Brain Engineering, KAIST, 373-1 Guseong-dong Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Jong Chul Ye
- Bio Imaging and Signal Processing Lab., Dept. of Bio and Brain Engineering, KAIST, 373-1 Guseong-dong Yuseong-gu, Daejeon 305-701, Republic of Korea.
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93
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Tanimoto K, Kusaka T, Nishida T, Ogawa K, Kato I, Ijichi S, Mikami J, Sobue I, Isobe K, Itoh S. Hemodynamic changes in the breast and frontal cortex of mothers during breastfeeding. Pediatr Res 2011; 70:400-5. [PMID: 21705961 DOI: 10.1203/pdr.0b013e31822a363a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The objective of this study was to confirm physiological reactions in the breast and brain in mothers during breastfeeding and collect basic objective data, aiming at effective support for breastfeeding. Ten healthy women who were exclusively breastfeeding their babies participated in this study. Changes in the concentration of oxygenated Hb (oxyHb) and deoxygenated Hb in the breasts and frontal cortex of these women during breastfeeding lactation were measured using double-channel near-infrared spectroscopy (NIRS). Changes were measured in three conditions: (1) in both breasts; (2) the ipsilateral breast and frontal cortex; and (3) the contralateral breast and frontal cortex. OxyHb and total Hb (totalHb) levels in the bilateral breasts decreased significantly after the onset of breastfeeding in comparison with prebreastfeeding levels. These two values repeatedly increased and decreased thereafter. In the frontal cortex, regardless of which breast was involved, oxyHb and totalHb levels increased significantly in comparison with prebreastfeeding levels. Similar hemodynamic changes occurred simultaneously in the bilateral breasts during breastfeeding regardless of the feeding or nonfeeding side. Hemodynamic changes were also noted in the frontal cortex, but the reactions in the breast and prefrontal cortex were different and not synchronous, confirming that the physiological circulatory dynamics during breastfeeding vary among organs.
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Affiliation(s)
- Kimie Tanimoto
- School of Nursing, Faculty of Medicine, Kagawa University, Kagawa 761-0793, Japan
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94
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Reliability of near infrared spectroscopy (NIRS) for measuring forearm oxygenation during incremental handgrip exercise. Eur J Appl Physiol 2011; 112:2369-74. [PMID: 21952981 DOI: 10.1007/s00421-011-2183-x] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2011] [Accepted: 09/13/2011] [Indexed: 10/17/2022]
Abstract
The purpose of this study was to test the reliability of a new handgrip exercise protocol measuring forearm oxygenation in 20 healthy subjects on two occasions. The retest took place 48 h later and at the same time of the day. The incremental exercise consisted of 2 min steps of cyclic handgrip contraction (1/2 Hz) separated by 1 min of recovery. The exercise started at 20% MVC, was increased with 10% MVC each step and was performed until exhaustion (69.5 and 73% MVC). Near infrared spectroscopy (NIRS) was used to measure deoxygenation (deoxy[Hb + Mb]) and oxygen saturation (SmO(2)) in the forearm muscles. Prior to the exercise protocol an arterial occlusion of the forearm was performed until deoxy(Hb + Mb) did no longer increase. Maximal increase in deoxy[Hb + Mb] during 10 s of each exercise bout was expressed relative to the occlusion amplitude. ICC was used to examine the test-retest reliability. Significant ICC's were reported at 50% (r = 0.466, p = 0.017) and 60% MVC (r = 0.553, p = 0.005). The group mean of the maximum increase in oxygen extraction was 45.6 ± 16.7% and at the retest 44.9 ± 17.0% with an ICC of r = 0.867 (p < 0.001) which could be classified (Landis and Koch 1979) as almost perfect. The absolute SmO(2) values showed reliable ICC's for every submaximal intensity except at 60% MVC. An ICC of r = 0.774 (p < 0.001) was found at maximal intensity. The results of the present study show that deoxy[Hb + Mb] and SmO(2) responses during this protocol are highly reliable and indicate that this protocol could be used to get insight into deoxygenation and oxygen saturation in a population with low exercise tolerance.
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95
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Destrieux C, Hommet C, Domengie F, Boissy JM, De Marco G, Joanette Y, Andersson F, Cottier JP. Influence of age on the dynamics of fMRI activations during a semantic fluency task. J Neuroradiol 2011; 39:158-66. [PMID: 21741093 DOI: 10.1016/j.neurad.2011.05.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Revised: 05/18/2011] [Accepted: 05/19/2011] [Indexed: 11/16/2022]
Abstract
PURPOSE Age-related fMRI changes have not been extensively studied for language, whereas important adaptive mechanisms have been seen in other cognitive fields. This study examined age-related changes in fMRI activation during language tasks and, in particular, their dynamic course. PATIENTS AND METHODS fMRI was performed on 22 young and 21 old healthy right-handed subjects during a silent category word-generation task. Activation and dynamics of BOLD signals were studied separately during the first and second portions of each 30-s block. RESULTS Activation of the left frontal lobe was initially similar in young and old participants; however, it decreased after 30 s in the old participants. On the other hand, additional areas were initially involved only in old subjects and especially in the default mode network. CONCLUSION This study showed age-related differences in the dynamics of fMRI activation during a silent word-generation task, suggesting a different pattern of language function with aging.
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Affiliation(s)
- C Destrieux
- Service de neuroradiologie, CHRU de Tours, 2, boulevard Tonnellé, 37044 Tours, France
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96
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Dubeau S, Desjardins M, Pouliot P, Beaumont E, Gaudreau P, Ferland G, Lesage F. Biophysical model estimation of neurovascular parameters in a rat model of healthy aging. Neuroimage 2011; 57:1480-91. [PMID: 21549843 DOI: 10.1016/j.neuroimage.2011.04.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2011] [Revised: 04/11/2011] [Accepted: 04/14/2011] [Indexed: 11/27/2022] Open
Abstract
Neuronal, vascular and metabolic factors result in a deterioration of the cerebral hemodynamic response with age. The interpretation of neuroimaging studies in the context of aging is rendered difficult due to the challenge in untangling the composite effect of these modifications. In this work we integrate multimodal optical imaging in biophysical models to investigate vascular and metabolic changes occurring in aging. Multispectral intrinsic optical imaging of an animal model of healthy aging, the LOU/c rat, is used in combination with somatosensory stimulation to study the modifications of the hemodynamic response with increasing age. Results are fitted with three macroscopic biophysical models to extract parameters, providing a phenomenological description of vascular and metabolic changes. Our results show that 1) biophysical parameters are estimable from multimodal data and 2) parameter estimates in this population change with aging.
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Affiliation(s)
- S Dubeau
- Department of Electrical Engineering, École Polytechnique de Montréal, Montréal, QC, Canada
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97
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Dubeau S, Ferland G, Gaudreau P, Beaumont E, Lesage F. Cerebrovascular hemodynamic correlates of aging in the Lou/c rat: a model of healthy aging. Neuroimage 2011; 56:1892-901. [PMID: 21497659 DOI: 10.1016/j.neuroimage.2011.03.076] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Revised: 03/07/2011] [Accepted: 03/28/2011] [Indexed: 11/18/2022] Open
Abstract
The LOU/c rat is an inbred strain considered a model of healthy aging. It exhibits a longer free disease lifespan and a low adiposity throughout life. While this animal model has been shown to maintain eating behavior and neuroendocrine, metabolic and cognitive functions with age, no study has yet investigated vascular correlates in this model of healthy aging. In the present work, multispectral optical imaging was used to investigate the hemodynamic response in the somatosensory cortex of LOU/c rats following forepaw stimulation in three age groups, 4, 24 and 40months. Results indicate reduced hemodynamic responses in the contralateral somatosensory cortex between young (4months) and older groups following stimulation. This decrease was associated with an increase in the spatial extent of activation. The ipsilateral response did not change with aging leading to decreased laterality. Estimations of the relative change in the local cerebral metabolic rate of oxygen during stimulation based on multimodal data showed no significant change with age. The exponent describing the relation between blood volume and blood flow changes, Grubb's parameter, did display a significant change with age which may suggest vessel compliance modifications. This work finds its relevance in recent findings underlying the importance of vascular changes with aging and its impact on neurodegenerative disease.
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Affiliation(s)
- S Dubeau
- Electrical Engineering Department, Ecole Polytechnique Montréal, Montreal, Quebec, Canada
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98
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Abstract
Near infrared spectroscopy (NIRS) is an increasingly popular technology for studying brain function. NIRS presents several advantages relative to functional magnetic resonance imaging (fMRI), such as measurement of concentration changes in both oxygenated and deoxygenated hemoglobin, finer temporal resolution, and ease of administration, as well as disadvantages, most prominently inferior spatial resolution and decreased signal-to-noise ratio (SNR). While fMRI has become the gold standard for in vivo imaging of the human brain, in practice NIRS is a more convenient and less expensive technology than fMRI. It is therefore of interest to many researchers how NIRS compares to fMRI in studies of brain function. In the present study we scanned participants with simultaneous NIRS and fMRI on a battery of cognitive tasks, placing NIRS probes over both frontal and parietal brain regions. We performed detailed comparisons of the signals in both temporal and spatial domains. We found that NIRS signals have significantly weaker SNR, but are nonetheless often highly correlated with fMRI measurements. Both SNR and the distance between the scalp and the brain contributed to variability in the NIRS/fMRI correlations. In the spatial domain, we found that a photon path forming an ellipse between the NIRS emitter and detector correlated most strongly with the BOLD response. Taken together these findings suggest that, while NIRS can be an appropriate substitute for fMRI for studying brain activity related to cognitive tasks, care should be taken when designing studies with NIRS to ensure that: 1) the spatial resolution is adequate for answering the question of interest and 2) the design accounts for weaker SNR, especially in brain regions more distal from the scalp.
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Affiliation(s)
- Xu Cui
- Department of Psychiatry and Behavioral Sciences, School of Medicine, Stanford University, Stanford, CA 94305, USA.
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99
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Leff DR, Orihuela-Espina F, Elwell CE, Athanasiou T, Delpy DT, Darzi AW, Yang GZ. Assessment of the cerebral cortex during motor task behaviours in adults: A systematic review of functional near infrared spectroscopy (fNIRS) studies. Neuroimage 2011; 54:2922-36. [PMID: 21029781 DOI: 10.1016/j.neuroimage.2010.10.058] [Citation(s) in RCA: 282] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2010] [Revised: 10/14/2010] [Accepted: 10/15/2010] [Indexed: 10/18/2022] Open
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100
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Cui X, Bray S, Bryant DM, Glover GH, Reiss AL. A quantitative comparison of NIRS and fMRI across multiple cognitive tasks. Neuroimage 2010; 54:2808-21. [PMID: 21047559 DOI: 10.1016/j.neuroimage.2010.10.069] [Citation(s) in RCA: 563] [Impact Index Per Article: 40.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2010] [Revised: 10/21/2010] [Accepted: 10/23/2010] [Indexed: 11/18/2022] Open
Abstract
Near infrared spectroscopy (NIRS) is an increasingly popular technology for studying brain function. NIRS presents several advantages relative to functional magnetic resonance imaging (fMRI), such as measurement of concentration changes in both oxygenated and deoxygenated hemoglobin, finer temporal resolution, and ease of administration, as well as disadvantages, most prominently inferior spatial resolution and decreased signal-to-noise ratio (SNR). While fMRI has become the gold standard for in vivo imaging of the human brain, in practice NIRS is a more convenient and less expensive technology than fMRI. It is therefore of interest to many researchers how NIRS compares to fMRI in studies of brain function. In the present study we scanned participants with simultaneous NIRS and fMRI on a battery of cognitive tasks, placing NIRS probes over both frontal and parietal brain regions. We performed detailed comparisons of the signals in both temporal and spatial domains. We found that NIRS signals have significantly weaker SNR, but are nonetheless often highly correlated with fMRI measurements. Both SNR and the distance between the scalp and the brain contributed to variability in the NIRS/fMRI correlations. In the spatial domain, we found that a photon path forming an ellipse between the NIRS emitter and detector correlated most strongly with the BOLD response. Taken together these findings suggest that, while NIRS can be an appropriate substitute for fMRI for studying brain activity related to cognitive tasks, care should be taken when designing studies with NIRS to ensure that: 1) the spatial resolution is adequate for answering the question of interest and 2) the design accounts for weaker SNR, especially in brain regions more distal from the scalp.
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Affiliation(s)
- Xu Cui
- Department of Psychiatry and Behavioral Sciences, School of Medicine, Stanford University, Stanford, CA 94305, USA.
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