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Dong Y, Mao M, Wu Y, Che C, Song Q, Sun W, Zhang C. Frontal and parietal cortices activation during walking is repeatable in older adults based on fNIRS. Heliyon 2024; 10:e30197. [PMID: 38756562 PMCID: PMC11096826 DOI: 10.1016/j.heliyon.2024.e30197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 04/19/2024] [Accepted: 04/22/2024] [Indexed: 05/18/2024] Open
Abstract
Purpose This study aimed to explore the test-retest reliability of fNIRS in measuring frontal and parietal cortices activation during straight walking and turning walking in older adults, in order to provide a theoretical foundation for selecting assessment tools for clinical research on motor control and some diseases such as Parkinson's disease in older adults. Methods 18 healthy older participants (69.1 ± 0.7 years) were included in this study. The participants completed straight walking and figure-of-eight turning walking tasks at self-selected speeds. Intra-class correlation coefficients (ICCs) and Bland-Altman scatter plots were used to assess the test-retest reliability of oxyhemoglobin (HbO2) changes derived from fNIRS. p < 0.05 was considered statistically significant. Results The test-retest reliability of HbO2 in prefrontal cortex (ICC, 0.67-0.78) was good and excellent, in frontal motor cortex (ICC, 0.51-0.61) and parietal sensory cortex (ICC, 0.53-0.62) is fair and good when the older adults performed straight and turning walking tasks. Bland-Altman diagram shows that the data consistency is fair and good. Conclusion fNIRS can be used as a clinical measurement method to evaluate the brain activation of the older adults when walking in a straight line and turning, and the results are acceptable repeatability and consistency. However, it is necessary to strictly control the testing process and consider the possible changes in the repeated measurements.
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Affiliation(s)
- Yuqi Dong
- Graduate School, Shandong Sport University, Jinan, China
| | - Min Mao
- Graduate School, Shandong Sport University, Jinan, China
- School of Nursing and Rehabilitation, Shandong University, Jinan, China
| | - Yunzhi Wu
- Graduate School, Shandong Sport University, Jinan, China
| | - Chengzhang Che
- Graduate School, Shandong Sport University, Jinan, China
| | - Qipeng Song
- Graduate School, Shandong Sport University, Jinan, China
| | - Wei Sun
- Graduate School, Shandong Sport University, Jinan, China
| | - Cui Zhang
- Graduate School, Shandong Sport University, Jinan, China
- Sports Biomechanics Lab, Shandong Institute of Sport Science, Jinan, China
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Jouybari AF, Ferraroli N, Bouri M, Alaoui SH, Kannape OA, Blanke O. Augmenting locomotor perception by remapping tactile foot sensation to the back. J Neuroeng Rehabil 2024; 21:65. [PMID: 38678291 PMCID: PMC11055306 DOI: 10.1186/s12984-024-01344-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 03/19/2024] [Indexed: 04/29/2024] Open
Abstract
BACKGROUND Sensory reafferents are crucial to correct our posture and movements, both reflexively and in a cognitively driven manner. They are also integral to developing and maintaining a sense of agency for our actions. In cases of compromised reafferents, such as for persons with amputated or congenitally missing limbs, or diseases of the peripheral and central nervous systems, augmented sensory feedback therefore has the potential for a strong, neurorehabilitative impact. We here developed an untethered vibrotactile garment that provides walking-related sensory feedback remapped non-invasively to the wearer's back. Using the so-called FeetBack system, we investigated if healthy individuals perceive synchronous remapped feedback as corresponding to their own movement (motor awareness) and how temporal delays in tactile locomotor feedback affect both motor awareness and walking characteristics (adaptation). METHODS We designed the system to remap somatosensory information from the foot-soles of healthy participants (N = 29), using vibrotactile apparent movement, to two linear arrays of vibrators mounted ipsilaterally on the back. This mimics the translation of the centre-of-mass over each foot during stance-phase. The intervention included trials with real-time or delayed feedback, resulting in a total of 120 trials and approximately 750 step-cycles, i.e. 1500 steps, per participant. Based on previous work, experimental delays ranged from 0ms to 1500ms to include up to a full step-cycle (baseline stride-time: µ = 1144 ± 9ms, range 986-1379ms). After each trial participants were asked to report their motor awareness. RESULTS Participants reported high correspondence between their movement and the remapped feedback for real-time trials (85 ± 3%, µ ± σ), and lowest correspondence for trials with left-right reversed feedback (22 ± 6% at 600ms delay). Participants further reported high correspondence of trials delayed by a full gait-cycle (78 ± 4% at 1200ms delay), such that the modulation of motor awareness is best expressed as a sinusoidal relationship reflecting the phase-shifts between actual and remapped tactile feedback (cos model: 38% reduction of residual sum of squares (RSS) compared to linear fit, p < 0.001). The temporal delay systematically but only moderately modulated participant stride-time in a sinusoidal fashion (3% reduction of RSS compared a linear fit, p < 0.01). CONCLUSIONS We here demonstrate that lateralized, remapped haptic feedback modulates motor awareness in a systematic, gait-cycle dependent manner. Based on this approach, the FeetBack system was used to provide augmented sensory information pertinent to the user's on-going movement such that they reported high motor awareness for (re)synchronized feedback of their movements. While motor adaptation was limited in the current cohort of healthy participants, the next step will be to evaluate if individuals with a compromised peripheral nervous system, as well as those with conditions of the central nervous system such as Parkinson's Disease, may benefit from the FeetBack system, both for maintaining a sense of agency over their movements as well as for systematic gait-adaptation in response to the remapped, self-paced, rhythmic feedback.
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Affiliation(s)
- Atena Fadaei Jouybari
- Laboratory of Cognitive Neuroscience, Faculty of Life Sciences, Neuro-X Institute, Swiss Federal Institute of Technology (EPFL), Geneva, 1012, Switzerland
| | - Nathanael Ferraroli
- Laboratory of Cognitive Neuroscience, Faculty of Life Sciences, Neuro-X Institute, Swiss Federal Institute of Technology (EPFL), Geneva, 1012, Switzerland
| | - Mohammad Bouri
- REHAssist Group, EPFL, Station 9, STI IMT MED, Lausanne, Switzerland
| | - Selim Habiby Alaoui
- Laboratory of Cognitive Neuroscience, Faculty of Life Sciences, Neuro-X Institute, Swiss Federal Institute of Technology (EPFL), Geneva, 1012, Switzerland
| | - Oliver Alan Kannape
- Laboratory of Cognitive Neuroscience, Faculty of Life Sciences, Neuro-X Institute, Swiss Federal Institute of Technology (EPFL), Geneva, 1012, Switzerland
- Virtual Medicine Center, HUG-NeuroCentre, Department of Clinical Neurosciences, University Hospitals Geneva, Geneva, Switzerland
| | - Olaf Blanke
- Laboratory of Cognitive Neuroscience, Faculty of Life Sciences, Neuro-X Institute, Swiss Federal Institute of Technology (EPFL), Geneva, 1012, Switzerland.
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Yan H, Zhang Y, Feng Y, Li Y, Zhang Y, Lee Y, Chen M, Shi Z, Liang Y, Hei Y, Duan X. Assessing mental demand in consecutive interpreting: Insights from an fNIRS study. Acta Psychol (Amst) 2024; 243:104132. [PMID: 38232507 DOI: 10.1016/j.actpsy.2024.104132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 09/27/2023] [Accepted: 01/08/2024] [Indexed: 01/19/2024] Open
Abstract
Consecutive interpreting involves a demanding language task where mental workload (MWL) is crucial for assessing interpreters' performance. An elevated cognitive load in interpreters may lead to the interpretation failures. The widely used NASA-TLX questionnaire effectively measures MWL. However, a global score was employed in previous interpretation studies, overlooking the distinct contributions of MWL components to the interpreters' performance. Accordingly, we recruited twenty novice interpreters who were postgraduate students specializing in interpreting to complete the consecutive interpreting task. Throughout the process, we used functional near-infrared spectroscopy (fNIRS) to monitor the hemodynamic response in participants' brains. The NASA-TLX was used to measure the MWL during interpreting with six components, including mental demand, physical demand, temporal demand, performance, effort, and frustration. Five interpretation experts were invited to assess the interpretation quality. The Bayes factor approach was employed to explore the components that contributes the most to the interpretation quality. It indicated that mental demand strongly contributed to the interpretation quality. Moreover, the mediation analysis revealed a positive correlation between mental demand and brain activation in three brain areas, which, in turn, was negatively correlated with interpretation quality, indicating the predictive role of mental demand in interpretation quality through the mediating of brain activation. The functions of the mediating brain areas, including the inferior frontal gyrus, middle temporal gyrus, and inferior temporal gyrus, aligned with the three efforts proposed by Gile's effort model, which emphasizes the significance of three fundamental efforts in achieving successful interpreting. These findings have implications for interpreter learning and training.
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Affiliation(s)
- Hao Yan
- Key Laboratory for Artificial Intelligence and Cognitive Neuroscience of Language, Xi'an International Studies University, Xi'an 710128, China; Department of Linguistics, Xidian University, Xi'an 710126, China.
| | - Yi Zhang
- Key Laboratory for Artificial Intelligence and Cognitive Neuroscience of Language, Xi'an International Studies University, Xi'an 710128, China.
| | - Yanqin Feng
- Department of Linguistics, Xidian University, Xi'an 710126, China.
| | - Yang Li
- Key Laboratory for Artificial Intelligence and Cognitive Neuroscience of Language, Xi'an International Studies University, Xi'an 710128, China.
| | - Yueting Zhang
- Key Laboratory for Artificial Intelligence and Cognitive Neuroscience of Language, Xi'an International Studies University, Xi'an 710128, China.
| | - Yujun Lee
- Key Laboratory for Artificial Intelligence and Cognitive Neuroscience of Language, Xi'an International Studies University, Xi'an 710128, China; Department of English, North Sichuan Medical University, Nanchong 637000, China.
| | - Maoqing Chen
- Department of Nursing, North Sichuan Medical University, Nanchong 637000, China.
| | - Zijuan Shi
- Department of Nursing, North Sichuan Medical University, Nanchong 637000, China.
| | - Yuan Liang
- Key Laboratory for Artificial Intelligence and Cognitive Neuroscience of Language, Xi'an International Studies University, Xi'an 710128, China.
| | - Yuqin Hei
- School of English Studies, Xi'an International Studies University, Xi'an 710128, China.
| | - Xu Duan
- Key Laboratory for Artificial Intelligence and Cognitive Neuroscience of Language, Xi'an International Studies University, Xi'an 710128, China.
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Patelaki E, Foxe JJ, McFerren AL, Freedman EG. Maintaining Task Performance Levels Under Cognitive Load While Walking Requires Widespread Reallocation of Neural Resources. Neuroscience 2023; 532:113-132. [PMID: 37774910 PMCID: PMC10842245 DOI: 10.1016/j.neuroscience.2023.09.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 08/25/2023] [Accepted: 09/20/2023] [Indexed: 10/01/2023]
Abstract
This study elucidates the neural mechanisms underlying increasing cognitive load while walking by employing 2 versions of a response inhibition task, the '1-back' version and the more cognitively demanding '2-back' version. By using the Mobile Brain/Body Imaging (MoBI) modality, electroencephalographic (EEG) activity, three-dimensional (3D) gait kinematics and task-related behavioral responses were collected while young adults (n = 61) performed either the 1-back or 2-back response inhibition task. Interestingly, increasing inhibitory difficulty from 1-back to 2-back during walking was not associated with any detectable costs in response accuracy, response speed, or gait consistency. However, the more difficult cognitive task was associated with distinct EEG component changes during both successful inhibitions (correct rejections) and successful executions (hits) of the motor response. During correct rejections, ERP changes were found over frontal regions, during latencies related to sensory gain control, conflict monitoring and working memory storage and processing. During hits, ERP changes were found over left-parietal regions during latencies related to orienting attention and subsequent selection and execution of the motor plan. The pattern of attenuation in walking-related EEG amplitude changes, during 2-back task performance, is thought to reflect more effortful recalibration of neural processes, a mechanism which might be a key driver of performance maintenance in the face of increased cognitive demands while walking. Overall, the present findings shed light on the extent of the neurocognitive capacity of young adults and may lead to a better understanding of how factors such as aging or neurological disorders could impinge on this capacity.
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Affiliation(s)
- Eleni Patelaki
- The Frederick J. and Marion A. Schindler Cognitive Neurophysiology Laboratory, The Del Monte Institute for Neuroscience, Department of Neuroscience, University of Rochester School of Medicine and Dentistry, 601 Elmwood Avenue, Rochester, NY 14642, USA; Department of Biomedical Engineering, University of Rochester, 201 Robert B. Goergen Hall, Rochester, NY 14627, USA
| | - John J Foxe
- The Frederick J. and Marion A. Schindler Cognitive Neurophysiology Laboratory, The Del Monte Institute for Neuroscience, Department of Neuroscience, University of Rochester School of Medicine and Dentistry, 601 Elmwood Avenue, Rochester, NY 14642, USA
| | - Amber L McFerren
- The Frederick J. and Marion A. Schindler Cognitive Neurophysiology Laboratory, The Del Monte Institute for Neuroscience, Department of Neuroscience, University of Rochester School of Medicine and Dentistry, 601 Elmwood Avenue, Rochester, NY 14642, USA
| | - Edward G Freedman
- The Frederick J. and Marion A. Schindler Cognitive Neurophysiology Laboratory, The Del Monte Institute for Neuroscience, Department of Neuroscience, University of Rochester School of Medicine and Dentistry, 601 Elmwood Avenue, Rochester, NY 14642, USA.
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Gattoni C, Martinez-Gonzalez B, Li C, Marcora SM. Assessing Cognitive-Motor Interference in Military Contexts: Validity and Reliability of Two Dual-tasking Tests. Mil Med 2023; 188:e2900-e2908. [PMID: 37098225 PMCID: PMC10464878 DOI: 10.1093/milmed/usad048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 11/14/2022] [Accepted: 02/12/2023] [Indexed: 04/27/2023] Open
Abstract
INTRODUCTION Cognitive-motor interference is the decrease in cognitive performance and/or physical performance occurring when a cognitive task and a physical task are performed concurrently (dual task) compared to when they are performed in isolation (single task). The aim of this study was to investigate the construct validity and test-retest reliability of two cognitive-motor interference tests in military contexts. MATERIALS AND METHODS Twenty-two soldiers, officers, and cadets performed a 10-min loaded marching, a 10-min Psychomotor Vigilance Task, and the two tasks combined (visit 1). During visit 2, a 5-min running time trial, a 5-min Word Recall Task, and the two tasks combined. These tests were repeated by 20 participants after 2 weeks (visits 3 and 4). RESULTS Significant impairments were shown on both running distance (P < .001) and number of words recalled (P = .004) in the dual-task condition compared to the single-task condition. Significantly shorter step length (P < .001) and higher step frequency (P < .001) were found during the loaded marching in the dual-task condition compared to the single-task condition. No significant differences were observed in mean reaction time (P = .402) and number of lapses (P = .479) during the Psychomotor Vigilance Task. Good-to-excellent reliability was found for all the cognitive and physical variables in both single- and dual-task conditions, except for the number of lapses. CONCLUSION These findings suggest that the Running + Word Recall Task test is a valid and reliable dual-tasking test that could be used to assess cognitive-motor interference in military contexts.
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Affiliation(s)
- Chiara Gattoni
- School of Sport and Exercise Sciences, University of Kent, Canterbury, Kent CT2 7NH, UK
| | - Borja Martinez-Gonzalez
- School of Sport and Exercise Sciences, University of Kent, Canterbury, Kent CT2 7NH, UK
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Centro Sportivo Universitario Record, Bologna 40127, Italy
| | - Caroline Li
- School of Computing, University of Kent, Chatham Maritime, Kent ME4 4AG, UK
| | - Samuele Maria Marcora
- School of Sport and Exercise Sciences, University of Kent, Canterbury, Kent CT2 7NH, UK
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Centro Sportivo Universitario Record, Bologna 40127, Italy
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Greenfield J, Delcroix V, Ettaki W, Derollepot R, Paire-Ficout L, Ranchet M. Left and Right Cortical Activity Arising from Preferred Walking Speed in Older Adults. SENSORS (BASEL, SWITZERLAND) 2023; 23:3986. [PMID: 37112327 PMCID: PMC10141493 DOI: 10.3390/s23083986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 04/03/2023] [Accepted: 04/12/2023] [Indexed: 06/19/2023]
Abstract
Cortical activity and walking speed are known to decline with age and can lead to an increased risk of falls in the elderly. Despite age being a known contributor to this decline, individuals age at different rates. This study aimed to analyse left and right cortical activity changes in elderly adults regarding their walking speed. Cortical activation and gait data were obtained from 50 healthy older individuals. Participants were then grouped into a cluster based on their preferred walking speed (slow or fast). Analyses on the differences of cortical activation and gait parameters between groups were carried out. Within-subject analyses on left and right-hemispheric activation were also performed. Results showed that individuals with a slower preferred walking speed required a higher increase in cortical activity. Individuals in the fast cluster presented greater changes in cortical activation in the right hemisphere. This work demonstrates that categorizing older adults by age is not necessarily the most relevant method, and that cortical activity can be a good indicator of performance with respect to walking speed (linked to fall risk and frailty in the elderly). Future work may wish to explore how physical activity training influences cortical activation over time in the elderly.
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Affiliation(s)
- Julia Greenfield
- Laboratory of Industrial and Human Automation Control, Mechanical Engineering and Computer Science, UMR 8201—LAMIH, University Polytechnic Hauts-de-France, F-59313 Valenciennes, France
| | - Véronique Delcroix
- Laboratory of Industrial and Human Automation Control, Mechanical Engineering and Computer Science, UMR 8201—LAMIH, University Polytechnic Hauts-de-France, F-59313 Valenciennes, France
| | - Wafae Ettaki
- Laboratory of Industrial and Human Automation Control, Mechanical Engineering and Computer Science, UMR 8201—LAMIH, University Polytechnic Hauts-de-France, F-59313 Valenciennes, France
| | - Romain Derollepot
- Health, Safety and Transport Department, Laboratory Ergonomics and Cognitive Sciences Applied to Transport (TS2-LESCOT), University Gustave Eiffel, The French Institute of Science and Technology for Transport, Development and Networks (IFSTTAR), University of Lyon, F-69675 Lyon, France
| | - Laurence Paire-Ficout
- Health, Safety and Transport Department, Laboratory Ergonomics and Cognitive Sciences Applied to Transport (TS2-LESCOT), University Gustave Eiffel, The French Institute of Science and Technology for Transport, Development and Networks (IFSTTAR), University of Lyon, F-69675 Lyon, France
| | - Maud Ranchet
- Health, Safety and Transport Department, Laboratory Ergonomics and Cognitive Sciences Applied to Transport (TS2-LESCOT), University Gustave Eiffel, The French Institute of Science and Technology for Transport, Development and Networks (IFSTTAR), University of Lyon, F-69675 Lyon, France
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Patelaki E, Foxe JJ, Mazurek KA, Freedman EG. Young adults who improve performance during dual-task walking show more flexible reallocation of cognitive resources: a mobile brain-body imaging (MoBI) study. Cereb Cortex 2023; 33:2573-2592. [PMID: 35661873 PMCID: PMC10016048 DOI: 10.1093/cercor/bhac227] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 05/09/2022] [Accepted: 05/10/2022] [Indexed: 11/14/2022] Open
Abstract
INTRODUCTION In young adults, pairing a cognitive task with walking can have different effects on gait and cognitive task performance. In some cases, performance clearly declines whereas in others compensatory mechanisms maintain performance. This study investigates the preliminary finding of behavioral improvement in Go/NoGo response inhibition task performance during walking compared with sitting, which was observed at the piloting stage. MATERIALS AND METHODS Mobile brain/body imaging (MoBI) was used to record electroencephalographic (EEG) activity, 3-dimensional (3D) gait kinematics and behavioral responses in the cognitive task, during sitting or walking on a treadmill. RESULTS In a cohort of 26 young adults, 14 participants improved in measures of cognitive task performance while walking compared with sitting. These participants exhibited walking-related EEG amplitude reductions over frontal scalp regions during key stages of inhibitory control (conflict monitoring, control implementation, and pre-motor stages), accompanied by reduced stride-to-stride variability and faster responses to stimuli compared with those who did not improve. In contrast, 12 participants who did not improve exhibited no EEG amplitude differences across physical condition. DISCUSSION The neural activity changes associated with performance improvement during dual tasking hold promise as cognitive flexibility markers that can potentially help assess cognitive decline in aging and neurodegeneration.
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Affiliation(s)
- Eleni Patelaki
- The Frederick J. and Marion A. Schindler Cognitive Neurophysiology Laboratory, The Del Monte Institute for Neuroscience, Department of Neuroscience, University of Rochester School of Medicine and Dentistry, 601 Elmwood Avenue, Rochester, NY 14642, United States
- Department of Biomedical Engineering, University of Rochester, 201 Robert B. Goergen Hall Rochester, NY 14627, United States
| | - John J Foxe
- The Frederick J. and Marion A. Schindler Cognitive Neurophysiology Laboratory, The Del Monte Institute for Neuroscience, Department of Neuroscience, University of Rochester School of Medicine and Dentistry, 601 Elmwood Avenue, Rochester, NY 14642, United States
| | - Kevin A Mazurek
- The Frederick J. and Marion A. Schindler Cognitive Neurophysiology Laboratory, The Del Monte Institute for Neuroscience, Department of Neuroscience, University of Rochester School of Medicine and Dentistry, 601 Elmwood Avenue, Rochester, NY 14642, United States
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Joseph Building 4-184W, 200 First Street SW, Rochester, MN 55905, United States
- Well Living Lab, Well Living Lab, Inc., 221 First Avenue SW, Rochester, MN 55902, United States
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Hoang I, Paire-Ficout L, Derollepot R, Perrey S, Devos H, Ranchet M. Increased prefrontal activity during usual walking in aging. Int J Psychophysiol 2022; 174:9-16. [DOI: 10.1016/j.ijpsycho.2022.01.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 10/10/2021] [Accepted: 01/24/2022] [Indexed: 10/19/2022]
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Asahara R, Ishii K, Liang N, Hatanaka Y, Hihara K, Matsukawa K. Regional difference in prefrontal oxygenation before and during overground walking in humans: a wearable multichannel NIRS study. Am J Physiol Regul Integr Comp Physiol 2022; 322:R28-R40. [PMID: 34843411 DOI: 10.1152/ajpregu.00192.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Using wireless multichannel near-infrared spectroscopy, regional difference in cortical activity over the prefrontal cortex (PFC) was examined before and during overground walking and in response to changes in speed and cognitive demand. Oxygenated-hemoglobin concentration (Oxy-Hb) as index of cortical activity in ventrolateral PFC (VLPFC), dorsolateral PFC (DLPFC), and frontopolar cortex (FPC) was measured in 14 subjects, whereas heart rate was measured as estimation of exercise intensity in six subjects. The impact of mental imagery on prefrontal Oxy-Hb was also explored. On both sides, Oxy-Hb in VLPFC, DLPFC, and lateral FPC was increased before the onset of normal-speed walking, whereas Oxy-Hb in medial FPC did not respond before walking onset. During the walking, Oxy-Hb further increased in bilateral VLPFC, whereas Oxy-Hb was decreased in DLPFC and lateral and medial FPC. Increasing walking speed did not alter the increase in Oxy-Hb in VLPFC but counteracted the decrease in Oxy-Hb in DLPFC (but not in lateral and medial FPC). Treadmill running evoked a greater Oxy-Hb increase in DLPFC (n = 5 subjects). Furthermore, increasing cognitive demand during walking, by deprivation of visual feedback, counteracted the decrease in Oxy-Hb in DLPFC and lateral and medial FPC, but it did not affect the increase in Oxy-Hb in VLPFC. Taken together, the profound and localized Oxy-Hb increase is a unique response for the VLPFC. The regional heterogeneity of the prefrontal Oxy-Hb responses to natural overground walking was accentuated by increasing walking speed or cognitive demand, suggesting functional distinction within the PFC.
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Affiliation(s)
- Ryota Asahara
- Department of Integrative Physiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan.,Human Informatics and Interaction Research Institute, grid.208504.bNational Institute of Advanced Industrial Science and Technology, Tsukuba, Japan
| | - Kei Ishii
- Department of Integrative Physiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan.,Human Informatics and Interaction Research Institute, grid.208504.bNational Institute of Advanced Industrial Science and Technology, Tsukuba, Japan
| | - Nan Liang
- Department of Integrative Physiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan.,Cognitive Motor Neuroscience, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yukari Hatanaka
- Department of Integrative Physiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kei Hihara
- Department of Integrative Physiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kanji Matsukawa
- Department of Integrative Physiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan.,Department of Applied Clinical Research, University of Texas Southwestern Medical Center, Dallas, Texas
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Gupta SS, Taori TJ, Ladekar MY, Manthalkar RR, Gajre SS, Joshi YV. Classification of cross task cognitive workload using deep recurrent network with modelling of temporal dynamics. Biomed Signal Process Control 2021. [DOI: 10.1016/j.bspc.2021.103070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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