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Tactile perception of textile fabrics based on friction and brain activation

Friction 2023年第7期11卷 1320-1333页

作者： Wei TANG Shousheng ZHANG Chuang YU Hua ZHU Si CHEN Yuxing PENG School of Mechatronic Engineering China University of Mining and TechnologyXuzhou 221116China Fluid Machinery Center Jiangsu UniversityZhenjiang 212013China

Tactile perception plays a critical role in the interaction of humans and *** begins with the mechanical stimulation induced by friction and is processed in the somatosensory *** quantify the tactile perceptions of textile fabrics,the mechanical properties of fabrics and the features extracted from the friction and vibration signals were correlated with the subjective sensation rated by ***,the technique of functional magnetic resonance imaging(fMRI)was used to identify the brain areas responsible for the tactile perception of textile *** results showed that during the tactile perception of textile fabrics,the coefficient of friction increased with the increasing normal load,indicating that the deformation mechanism of skin was relevant to the friction of skin against *** features of spectral centroid(SC),coefficient of friction,and diameter and critical buckling force of fiber had a strong correlation with the perceived fineness,slipperiness,and prickliness of fabrics,*** postcentral gyrus,supramarginal gyrus,and precentral gyrus,with the corresponding functional regions of the primary somatosensory cortex(SI),secondary somatosensory cortex(SII),primary motor cortex(MI),and secondary motor cortex(MII),were involved with the perceptions of fabric *** fiber properties and fabric surface structures that caused the multidimensional feelings tended to induce the large area,intensity,and percent signal change(PSC)of brain *** study is meaning for evaluating the tactile stimulation of textile fabrics and understanding the cognitive mechanism in the tactile perception of textile fabrics.

关键词： tactile perception friction brain activation characteristic features textile fabric

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Effects of acupuncture stimulation on brain activation induced by cue-elicited alcohol craving

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Neural Regeneration Research 2022年第5期17卷 1059-1064页

作者： Hyeok Gyu Kwon Seong Hun Choi Joon Ho Seo Chae Ha Yang Mi Young Lee Department of Physical Therapy College of Health ScienceEulji UniversityGyeonggiRepublic of Korea Department of Anatomy and Histology College of Oriental MedicineDaegu Haany UniversityGyeongsanRepublic of Korea Department of Rehabilitation Gyeongbuk Regional Rehabilitation HospitalGyeongsanRepublic of Korea Department of Physiology College of Korean MedicineDaegu Haany UniversityDaeguRepublic of Korea Department of Physical Therapy College of Biomedical ScienceDaegu Haany UniversityGyeongsanRepublic of Korea

Acupuncture has been shown to be effective on alcohol use ***,the underlying mechanism remains poorly *** investigate the effects of Shenmen(HT7)acupoint on brain activation induced by cue-elicited alcohol craving,30 right-handed healthy light to moderate alcohol drinkers were recruited from the *** were randomly assigned to undergo acupuncture either at HT7(experimental acupoint,n=15)or Jingqu(LU8,control acupoint,n=15)*** randomized controlled study was performed in Daegu Haany University and Daegu-Gyeongbuk Medical Innovation Foundation,Republic of *** and data collection were conducted from December 2018 to May *** results showed that after acupuncture at HT7 acupoint,the activation of orbitofrontal cortex and dorsolateral prefrontal cortex was greatly increased,while the activation of dorsolateral prefrontal cortex was obviously reduced,and subject's craving for alcohol was reduced when he/she seeing alcohol-related video clips involving various alcohols(beer,wine,or soju)or drinking *** at HT7 more greatly reduced subject's alcohol cravings than acupuncture at LU8 *** findings suggest that acupuncture can improve the self-control of mild to moderate social drinkers through the activation of the orbitofrontal cortex and dorsolateral prefrontal cortex,thereby reducing the craving for *** study protocol was approved by the Institutional Review Board of Daegu Haany University Korean Medicine Hospital,Republic of Korea(approval ***-D-18026-PRO-02)on November 30,2018.

关键词： acupuncture addiction alcohol brain activation craving cue functional MRI Shenmen(HT7)acupoint

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Changes in brain activation in stroke patients after mental practice and physical exercise: a functional MRI study

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Neural Regeneration Research 2014年第15期9卷 1474-1484页

作者： Hua Liu Luping Song Tong Zhang Capital Medical University School of Rehabilitation Medicine China Rehabilitation Research Center

Mental practice is a new rehabilitation method that reters to the mental rehearsal ot motor imagery content with the goal of improving motor performance. However, the relationship between activated regions and motor recovery after mental practice training is not well understood. In this study, 15 patients who suffered a firstever subcortical stroke with neurological deficits affecting the right hand, but no significant cognitive impairment were recruited. 10 patients underwent mental practice combined with physical practice training, and 5 patients only underwent physical practice training. We observed brain activation regions after 4 weeks of training, and explored the correlation of activation changes with functional recovery of the affected hands. The results showed that, after 4 weeks of mental practice combined with physical training, the Fugl-Meyer assessment score for the affected right hand was significantly increased than that after 4 weeks of practice training alone. Functional MRI showed enhanced activation in the left primary somatosensory cortex, attenuated activation intensity in the right primary motor cortex, and enhanced right cerebellar activation observed during the motor imagery task using the affected right hand after mental practice training. The changes in brain cortical activity were related to functional recovery of the hand. Experimental findings indicate that cortical and cerebellar functional reorganization following mental practice contributed to the improvement of hand function.

关键词： nerve regeneration brain activation cortical activation somatosensory cortex corticalreorganization stroke mental practice functional recovery motor imagery neural regeneration

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Improvement of Physical Fitness Test Assessment Criteria Based on fNIRS Technology:Taking Pull-Up as an Example

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Journal of Shanghai Jiaotong university(Science) 2022年第2期27卷 219-225页

作者：巩斌禹香华方宇王正杨皓陈国栋吕娜 School of Mechanical and Automotive Engineering Shanghai University of Engineering ScienceShanghai201620China Shanghai Jiao Tong University Affiliated Sixth People’s Hospital Shanghai200233China School of Mechanical and Electrical Engineering Soochow UniversitySuzhouJiangsu215006China School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai200240China

Pull-up,as an important physical fitness test event of the“National Student Physical Health Standard”,is known as a difficult physical fitness test *** improve the assessment criteria of pull-ups,this paper uses the functional near-infrared spectroscopy(fNIRS)to monitor the changes and activation of oxyhemoglobin(HbO)signals in the brain motor cortex of people with different body mass indexes(BMIs)during the pullup *** the relationship between BMIs and evaluation criteria is *** collecting and analyzing experimental data of 18 recruited college students,it is found that the number of pull-ups performed by people with different BMIs is different when they reach the peak state of brain *** results of the study indicate that different assessment criteria should be adopted for different BMI *** is suggested that the BMI should be introduced as one of the test indexes in the examination of pull-ups event in“National Student Physical Health Standard”.

关键词： functional near-infrared spectroscopy(fNIRS) body mass index(BMI) pull-up brain activation

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Neural mechanism of proposer's decision-making in the ultimatum and dictator games

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Neural Regeneration Research 2013年第4期8卷 357-362页

作者： Hongming Zheng Liqi Zhu School of Economics and Management Southwest Jiaotong University Center for Magnetic Resonance Imaging Research Institute of PsychologyChinese Academy of Sciences

Previous studies have demonstrated that reactions to unfair offers in the ultimatum game are correlated with negative emotion. However, little is known about the difference in neural activity between a proposer＇s decision-making in the ultimatum game compared with the dictator game. The present functional magnetic resonance imaging study revealed that proposing fair offers in the dictator game elicited greater activation in the right supramarginal gyrus, right medial frontal gyrus and left anterior cingulate cortex compared with proposing fair offers in the ultimatum game in 23 Chinese undergraduate and graduate students from Beijing Normal University in China. However, greater activation was found in the right superior temporal gyrus and left cingulate gyrus for the reverse contrast. ＂The results indicate that proposing fair offers in the dictator game is more strongly associated with cognitive control and conflicting information processing compared with proposing fair offers in the ultimatum game.

关键词： neural regeneration neuroimaging functional magnetic resonance imaging decision-making fair behavior neural mechanism brain brain activation cognition emotion grants-supported paper photographs-containing paper neuroregeneration

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Mechanism of Kinect-based virtual reality training for motor functional recovery of upper limbs after subacute stroke

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Neural Regeneration Research 2013年第31期8卷 2904-2913页

作者： Xiao Bao Yurong Mao Qiang Lin Yunhai Qiu Shaozhen Chen Le Li Ryan S.Cates Shufeng Zhou Dongfeng Huang Department of Rehabilitation Medicine the First Affiliated Hospital Sun Yat-sen University Key Laboratory of Health Informatics of Chinese Academy of Sciences Shenzhen Institutes of Advanced Technology Department of Pharmaceutical Sciences College of Pharmacy University of South Florida

The Kinect-based virtual reality system for the Xbox 360 enables users to control and interact with the game console without the need to touch a game controller, and provides rehabilitation training for stroke patients with lower limb dysfunctions. However, the underlying mechanism remains un- clear. In this study, 18 healthy subjects and five patients after subacute stroke were included. The five patients were scanned using functional MRI prior to training, 3 weeks after training and at a 12-week follow-up, and then compared with healthy subjects. The FugI-Meyer Assessment and Wolf Motor Function Test scores of the hemiplegic upper limbs of stroke patients were significantly increased 3 weeks after training and at the 12-week follow-up. Functional MRI results showed that contralateral primary sensorimotor cortex was activated after Kinect-based virtual reality training in the stroke patients compared with the healthy subjects. Contralateral primary sensorimotor cortex, the bilateral supplementary motor area and the ipsilateral cerebellum were also activated during hand-clenching in all 18 healthy subjects. Our findings indicate that Kinect-based virtual reality training could promote the recovery of upper limb motor function in subacute stroke patients, and brain reorganization by Kinect-based virtual reality training may be linked to the contralateral sen- sorimotor cortex.

关键词： neural regeneration neurological rehabilitation rehabilitation training neural plasticity virtual reality functional MRI stroke Kinect-based virtual reality training upper limb cerebral cortex brain activation region of interest grants-supported paper neuroregeneration

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Significant change of sensitivity index d' in sensory processing of human brain during wake-sleep transition

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Neural Regeneration Research 2011年第24期6卷 1894-1897页

作者： Chuang Gao Fengjuan Zhang Wei Wei Yang Zhang Shanyu Ke Key Laboratory of Human Being Development and Mental Health Huazhong Normal University Wuhan 430079 Hubei Province China College of Science Huazhong Agricultural University Wuhan 430079 Hubei Province China

The sensor area in the brain remains active during the wake-sleep transition. However, the behavioral mechanisms of sensor sensitivity involved in the transition from a state of wakefulness to a sleep state remain poorly understood. To detect sensitivity index （d） changes during the wake-sleep transition, the present study recorded response times of wakefulness versus wake-sleep transition in 14 healthy undergraduate volunteers. During wake-sleep transition testing, morphological changes in the time courses of behavior response revealed 2 typical phases （stages A and B）. In stage A, subject behavior responses exhibited temporal fluctuations, and all subjects displayed a high accuracy rate. In stage B, subjects did not exhibit behavioral responses. The sensitivity index d＇ during the wake-sleep transition （stage A） was significantly weaker than during wakefulness. Results demonstrated that at the behavioral level, sensation capacity for transfer information from the external world into the internal system significantly decreased during the transition to sleep.

关键词： brain activation central nervous system neural regeneration sensitivity wakefulness wake-sleep transition

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An fMRI Study of Words Processing in Chinese Language

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Journal of Biosciences and Medicines 2016年第3期4卷 9-14页

作者： Pei Xu Bing Sun Chunqi Chang Nan Hu School of Electronic and Information Engineering Soochow University Suzhou China School of Biomedical Engineering Shenzhen University Shenzhen China

Using the blood oxygen levels dependent technology of magnetic resonance imaging (BLOD-fMRI), we aimed to explore the brain activation after visual stimulation by Chinese words. In the current study, 24 healthy volunteers (12 males, 12 females, right-handed, mean age 26 ± 2 years) were prospectively included. The event related design was used in the current fMRI study when participants silently read all words appearing in the middle of the screen. Images were processed with Statistical Parametric Mapping 8 (SPM8) software, by using a general linear model (GLM). Group activations were extracted from the 2nd level group analysis with a threshold of p brain semantic processing, including middle temporal gyrus, fusiform gyrus, supplementary motor area, inferior frontal gyrus, cingulate gyrus, superior parietal lobule and inferior parietal lobule. It was also learnt that superior parietal lobule and middle temporal gyrus are related with semantic understanding, lenticular nucleus are related with semantic processing. This means, in addition to the cerebral cortex, subcortical nuclei is also very important to the processing of words in Chinese language.

关键词： Functional Magnetic Resonance Imaging (fMRI) brain Functional Area brain activation

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Electroencephalographic Activity Associated to Investment Decisions: Gender Differences

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Journal of Behavioral and brain Science 2015年第6期5卷 203-211页

作者： Armando FRocha Joao Paulo Vieito Eduardo Massad Fabio TRocha Roberto Ivo Lima RANI JundiaiBrazil School of Business Studies Polytechnic InstituteViana do CasteloPortugal Medical School Sao Paulo UniversitySao PauloBrazil

Literature in finance and neurosciences shows that male and female differ in many relevant issues concerning financial decision investment. Here, we studied the EEG activity recorded while volunteers were playing a stock trading game to investigate these gender differences. 20 males and 20 females made 100 trading decisions using a portfolio of 200 shares of 7 different companies. Males and females were equally successful in earning above the market. sLORETA was used to identify sources of EEG recorded 2 seconds before trading decision. Results showed that male and female used different sets of neuron to make equally successful financial decisions.

关键词： Neurofinance EEG Stock Investment brain activation Loreta Decision Making

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