This paper deals with a real-life application of epilepsy classification, where three phases of absence seizure, namely pre-seizure, seizure and seizure-free, are classified using real clinical data. Artificial neural...This paper deals with a real-life application of epilepsy classification, where three phases of absence seizure, namely pre-seizure, seizure and seizure-free, are classified using real clinical data. Artificial neural network （ANN） and support vector machines （SVMs） combined with su- pervised learning algorithms, and k-means clustering （k-MC） combined with unsupervised techniques are employed to classify the three seizure phases. Different techniques to combine binary SVMs, namely One Vs One （OvO）, One Vs All （OVA） and Binary Decision Tree （BDT）, are employed for multiclass classification. Comparisons are performed with two traditional classification methods, namely, k-Nearest Neighbour （k- NN） and Naive Bayes classifier. It is concluded that SVM-based classifiers outperform the traditional ones in terms of recognition accuracy and robustness property when the original clinical data is distorted with noise. Furthermore, SVM-based classifier with OvO provides the highest recognition accuracy, whereas ANN-based classifier overtakes by demonstrating maximum accuracy in the presence of noise.展开更多
To facilitate stability analysis of discrete-time bidirectional associative memory (BAM) neural networks, they were converted into novel neural network models, termed standard neural network models (SNNMs), which inte...To facilitate stability analysis of discrete-time bidirectional associative memory (BAM) neural networks, they were converted into novel neural network models, termed standard neural network models (SNNMs), which interconnect linear dynamic systems and bounded static nonlinear operators. By combining a number of different Lyapunov functionals with S-procedure, some useful criteria of global asymptotic stability and global exponential stability of the equilibrium points of SNNMs were derived. These stability conditions were formulated as linear matrix inequalities (LMIs). So global stability of the discrete-time BAM neural networks could be analyzed by using the stability results of the SNNMs. Compared to the existing stability analysis methods, the proposed approach is easy to implement, less conservative, and is applicable to other recurrent neural networks.展开更多
Ganglionic long-term potentiation(gLTP) is an activitydependent,enduring enhancement of ganglionic transmission.This phenomenon may be induced in autonomic ganglia of an organism under certain conditions whererepetiti...Ganglionic long-term potentiation(gLTP) is an activitydependent,enduring enhancement of ganglionic transmission.This phenomenon may be induced in autonomic ganglia of an organism under certain conditions whererepetitive impulses surge from the central nervous system(CNS) to the periphery.Chronic stress,repetitive epileptic seizure or chronic use of CNS stimulants could induce gL TP,which would result in a long lasting heightening of sympathetic tone to the cardiovascular system causing hypertension and disturbed cardiac rhythm that may lead to sudden cardiac death.These conditions are briefly reviewed in this article.展开更多
Some studies document that odorants influence in sympathetic and parasympathetic nervous systems, and neurophysiological brain activity. Odors compounds can act on the neuroendocrine system, neurotransmitters and neur...Some studies document that odorants influence in sympathetic and parasympathetic nervous systems, and neurophysiological brain activity. Odors compounds can act on the neuroendocrine system, neurotransmitters and neuromodulators, influencing psychological behavior as well as body function. The study was conducted in 20 individuals in each test to analyze the effects of essential oil inhalation on psychomotor performance in the healthy volunteers. Two tests were performed in the present study （1） SLCT （six letter cancellation test） and （2） DLST （digit letter substitution test）. These tests were carded out for the assessment of psychopharmacological activity of essential oil of Rosa damascena Mill., in healthy young human individuals belonging to the age group 18 to 22 years. The results of the psychomotor performance test in healthy human individuals revealed that there was improvement in psychomotor functions.展开更多
A new control law is proposed to asymptotically stabilize the chaotic neuron system based on LaSalleinvariant principle.The control technique does not require analytical knowledge of the system dynamics and operateswi...A new control law is proposed to asymptotically stabilize the chaotic neuron system based on LaSalleinvariant principle.The control technique does not require analytical knowledge of the system dynamics and operateswithout an explicit knowledge of the desired steady-state position.The well-known modified Hodgkin-Huxley (MHH)and Hindmarsh-Rose (HR) model neurons are taken as examples to verify the implementation of our method.Simulationresults show the proposed control law is effective.The outcome of this study is significant since it is helpful to understandthe learning process of a human brain towards the information processing,memory and abnormal discharge of the brainneurons.展开更多
Objective: The aim of this study was to investigate the clinical manifestations of primary central nervous system lymphoma (PCNSL) with non-immune deficiency and explore effective methods for its diagnosis and treatme...Objective: The aim of this study was to investigate the clinical manifestations of primary central nervous system lymphoma (PCNSL) with non-immune deficiency and explore effective methods for its diagnosis and treatment. Methods: The clinical, imaging and pathological data from 17 cases with PCNSL in our hospital from March 2006 to April 2009 were analyzed. The immunologic function test for all 17 cases was confirmed as normal. Four of them received stereotactie brain biopsy while the other patients were given full or partial resection. Fifteen of them were given both radiotherapy and chemotherapy after surgery. High-dose Methotrexate (HD-MTX) (2.0g/m2) was used via intravenous infusion once per week for three times. From week 4, patients began radiotherapy. Six cases with abnormal cerebrospinal fluid were given whole central nervous system radiotherapy, and 9 cases with normal cerebrospinal fluid were given only whole brain radiotherapy. Two of them were without any additional treatment after surgery. Sixteen of 17 cases were followed up for 9-48 months. Therapeutic efficacy, toxic and side effect were investigated. Results: Six cases, who were given HD-MTX chemotherapy and whole central nervous system radiotherapy, had grade 3 leukopenia, but other toxic and side effect above grade 3 were not observed. Two patients having no chemotherapy and radiotherapy recurred in one month, but there was only one recurred case in three months among 15 cases who had both chemotherapy and radiotherapy. One of them lost fellow-up. The 2-year survival rate was 69.2%. Conclusion: There is no specific clinical manifestation for PCNSL. The pathological examination is a reliable method to confirm PCNSL. Recurrence may occur after surgery alone, however, the combination of HD-MTX chemotherapy and radiotherapy is an effective and safe therapeutic option, which might improve the treatment efficiency and survival rate.展开更多
Objective To develop and evaluate the rat model of chronic glaucoma by episcleral veins ligation （EVL）. Methods Experimental glaucoma was induced unilaterally in 28 male Sprague-Dawley rats by ligating two episclera...Objective To develop and evaluate the rat model of chronic glaucoma by episcleral veins ligation （EVL）. Methods Experimental glaucoma was induced unilaterally in 28 male Sprague-Dawley rats by ligating two episcleral veins. Intraocular pressure （10P） in rats was measured by a Goldmann applanation tonometer under 3 % pentobarbital sodium anesthesia. The optic nerve head and retinal vasculature were assessed by repeated fundus examinations. The amount of optic nerve axons was assessed by Image-Pro Plus image analysis system in a masked fashion. Results lOP without EVL was （ 19.21 ± 1.23） mmHg, whereas the EVL eyes gained about 1.8-fold higher 10P[ （33.96 ±2. 73） mmHg]after EVL immediately （ P 〈 0. 001 ）. The elevated IOP gradually decreased over time. However, the differences were kept significant up to 8 weeks after EVL. The lOP was reduced to similar levels as contralateral eyes at 12 and 16 weeks after EVL. The glaucomatous optic nerve excavation appeared in EVL eyes at 8 weeks after EVL, and the optic nerve excavation enlarged gradually with the increasing post-operation time. The amount of optic nerve axons also significantly decreased in EVL eyes at 8 weeks after EVL, and the amount of axons decreased gradually with the increasing post-operation time. Conclusion Increase of lOP caused by EVL represents a useful and efficient model of experimental glaucoma in rats.展开更多
The Unified Power Flow Controller （UPFC） is one of the most versatile Flexible AC Transmission Systems （FACTS） devices that has unique capability of independently controlling the real and reactive power flows, in ...The Unified Power Flow Controller （UPFC） is one of the most versatile Flexible AC Transmission Systems （FACTS） devices that has unique capability of independently controlling the real and reactive power flows, in addition to regulate the system bus voltage. This paper presents performance analysis of Unified Power Flow Controller based on two axis theory. Based on this analysis, a new Artificial Neural Network （ANN） based controller has been proposed to improve the system performance. The controller rules are structured depending upon the relationship between series inserted voltage and the desired changes in real/reactive power flow in the power system. The effects of different controllers along with parameters of series transformer and transmission line have been investigated through developed control block model in SIMULINK tool box of MATLAB. The effectiveness of the proposed scheme is demonstrated by case studies.展开更多
Objective To systematically evaluate the efficacy of heat-sensitive moxibustion in treatment of cervical spondylotic radiculopathy（CSR）. Methods Chinese National Knowledge Infrastructure（CNKI）, China Biology Medi...Objective To systematically evaluate the efficacy of heat-sensitive moxibustion in treatment of cervical spondylotic radiculopathy（CSR）. Methods Chinese National Knowledge Infrastructure（CNKI）, China Biology Medical（CBM） database, Chinese Science and Technology Periodical Database（VIP）, Wan Fang Data, Pubmed and Cochrane Library were retrieved to search the randomized controlled trials（RCT） on heat-sensitive moxibustion in treatment of CSR, and Meta analysis was conducted by applying Rev Man 5.3 software. Results Eventually, 10 papers were included in this study, including 1008 subjects. Meta analysis result showed： the total effective rate of treatment group was higher than that of control group, and the difference was statistically significant [RR=1.13, 95%CI（1.06, 1.21）, Z=3.54, P=0.000 4]; the cure rate of treatment group was higher than that of control group, and the difference was statistically significant [RR=1.80, 95%CI（1.52, 2.13）, Z=6.82, P〈0.000 01]; the improvement of short-form Mc Gill pain questionnaire（SF-MPQ） of treatment group was superior to that of control group, and the difference was statistically significant [MD=–4.44, 95%CI（–6.38,-2.50）, Z=4.49, P〈0.000 01]; visual analogue scale（VAS） of treatment group was lower than that of control group, and the difference was statistically significant [MD=-0.36, 95%CI（-0.50, –0.23）, Z=5.42, P〈0.00001]; and the improvement of interleukin-6（IL-6） of treatment group was superior to that of control group, and the difference was statistically significant [MD=–7.32, 95%CI（-11.49, –3.14）, Z=3.44, P=0.000 6]. Conclusion It is indicated from the Meta analysis result that the clinical efficacy of heat-sensitive moxibustion or acupuncture combined with heat-sensitive moxibustion in treatment of CSR is superior to that of simple acupuncture or traditional suspended moxibustion, providing a new therapeutic method for treatment of CSR. However, the abovementioned conclusion still needs to be confirmed through randomized blind controlled trials with high quality and large sample size since the sample size of included studies was small, and the quality was low.展开更多
Objective： To assess the efficacy and safety of mouse nerve growth factor （mNGF） in patients with peripheral nerve injury. Methods： Such electronic database as Cochrane Library （Issue 1,2011）, Medline （1950-2...Objective： To assess the efficacy and safety of mouse nerve growth factor （mNGF） in patients with peripheral nerve injury. Methods： Such electronic database as Cochrane Library （Issue 1,2011）, Medline （1950-2011）, Embase （1980- 2011）, National Knowledge Infrastructure （ 1979 -2011 ） were searched and meanwhile relevant journals such as Chinese Journal of Orthopaedics, Chinese Journal of Microsurgery, Chinese Journal of Neurosurgery, ere were searched as well to collect all randomized controlled trials and quasi-randomi- zed controlled trials of mNGF on patients with peripheral nerve injury. The quality of included studies was assessed according to the criteria recommended by the Cochrane Handbook for Systematic Reviews of Interventions and the data were extracted by two reviewers independently. Meta- analysis was conducted by RevMan 5.1 software. Results： Forty-one studies involving 3 304 patients with peripheral nerve injury were included. The results of meta-analysis showed that： （1） the total effective rate ofperipheral nerve injury treatment in mNGF group was obviously higher than that in control group （OR=6.36, 95% C1 4.96-8.15, P〈0.01）; （2） the scores of activities of daily living （ADL） in mNGF group was significantly higher than that in control group （weighted mean difference=1.97, 95% CI 1.33- 2.61, P〈 0.0 l）; （3） the incidence of adverse reaction in mNGF group was higher than that in control group, （OR= 1.66, 95% CI 1.61-2.38, P=0.006）, but the adverse effects were mild, which could be relieved without specific treatment or just given symptomatic treatment, and disappeared at the end of treatment. Conclusions： The mNGF therapy is effective for peripheral nerve injury. It can obviously improve patient＇s ADL. Though the incidence of adverse reaction in mNGF treatment group is higher than that in control group, this does not influence the treatment outcomes.展开更多
文摘This paper deals with a real-life application of epilepsy classification, where three phases of absence seizure, namely pre-seizure, seizure and seizure-free, are classified using real clinical data. Artificial neural network （ANN） and support vector machines （SVMs） combined with su- pervised learning algorithms, and k-means clustering （k-MC） combined with unsupervised techniques are employed to classify the three seizure phases. Different techniques to combine binary SVMs, namely One Vs One （OvO）, One Vs All （OVA） and Binary Decision Tree （BDT）, are employed for multiclass classification. Comparisons are performed with two traditional classification methods, namely, k-Nearest Neighbour （k- NN） and Naive Bayes classifier. It is concluded that SVM-based classifiers outperform the traditional ones in terms of recognition accuracy and robustness property when the original clinical data is distorted with noise. Furthermore, SVM-based classifier with OvO provides the highest recognition accuracy, whereas ANN-based classifier overtakes by demonstrating maximum accuracy in the presence of noise.
基金Project (No. 60074008) supported by the National Natural Science Foundation of China
文摘To facilitate stability analysis of discrete-time bidirectional associative memory (BAM) neural networks, they were converted into novel neural network models, termed standard neural network models (SNNMs), which interconnect linear dynamic systems and bounded static nonlinear operators. By combining a number of different Lyapunov functionals with S-procedure, some useful criteria of global asymptotic stability and global exponential stability of the equilibrium points of SNNMs were derived. These stability conditions were formulated as linear matrix inequalities (LMIs). So global stability of the discrete-time BAM neural networks could be analyzed by using the stability results of the SNNMs. Compared to the existing stability analysis methods, the proposed approach is easy to implement, less conservative, and is applicable to other recurrent neural networks.
文摘Ganglionic long-term potentiation(gLTP) is an activitydependent,enduring enhancement of ganglionic transmission.This phenomenon may be induced in autonomic ganglia of an organism under certain conditions whererepetitive impulses surge from the central nervous system(CNS) to the periphery.Chronic stress,repetitive epileptic seizure or chronic use of CNS stimulants could induce gL TP,which would result in a long lasting heightening of sympathetic tone to the cardiovascular system causing hypertension and disturbed cardiac rhythm that may lead to sudden cardiac death.These conditions are briefly reviewed in this article.
文摘Some studies document that odorants influence in sympathetic and parasympathetic nervous systems, and neurophysiological brain activity. Odors compounds can act on the neuroendocrine system, neurotransmitters and neuromodulators, influencing psychological behavior as well as body function. The study was conducted in 20 individuals in each test to analyze the effects of essential oil inhalation on psychomotor performance in the healthy volunteers. Two tests were performed in the present study （1） SLCT （six letter cancellation test） and （2） DLST （digit letter substitution test）. These tests were carded out for the assessment of psychopharmacological activity of essential oil of Rosa damascena Mill., in healthy young human individuals belonging to the age group 18 to 22 years. The results of the psychomotor performance test in healthy human individuals revealed that there was improvement in psychomotor functions.
基金Supported by the National Natural Science Foundation of China under Grant Nos. 10862001 and 10947011the Construction of Key Laboratories in Universities of Guangxi under Grant No. 200912
文摘A new control law is proposed to asymptotically stabilize the chaotic neuron system based on LaSalleinvariant principle.The control technique does not require analytical knowledge of the system dynamics and operateswithout an explicit knowledge of the desired steady-state position.The well-known modified Hodgkin-Huxley (MHH)and Hindmarsh-Rose (HR) model neurons are taken as examples to verify the implementation of our method.Simulationresults show the proposed control law is effective.The outcome of this study is significant since it is helpful to understandthe learning process of a human brain towards the information processing,memory and abnormal discharge of the brainneurons.
文摘Objective: The aim of this study was to investigate the clinical manifestations of primary central nervous system lymphoma (PCNSL) with non-immune deficiency and explore effective methods for its diagnosis and treatment. Methods: The clinical, imaging and pathological data from 17 cases with PCNSL in our hospital from March 2006 to April 2009 were analyzed. The immunologic function test for all 17 cases was confirmed as normal. Four of them received stereotactie brain biopsy while the other patients were given full or partial resection. Fifteen of them were given both radiotherapy and chemotherapy after surgery. High-dose Methotrexate (HD-MTX) (2.0g/m2) was used via intravenous infusion once per week for three times. From week 4, patients began radiotherapy. Six cases with abnormal cerebrospinal fluid were given whole central nervous system radiotherapy, and 9 cases with normal cerebrospinal fluid were given only whole brain radiotherapy. Two of them were without any additional treatment after surgery. Sixteen of 17 cases were followed up for 9-48 months. Therapeutic efficacy, toxic and side effect were investigated. Results: Six cases, who were given HD-MTX chemotherapy and whole central nervous system radiotherapy, had grade 3 leukopenia, but other toxic and side effect above grade 3 were not observed. Two patients having no chemotherapy and radiotherapy recurred in one month, but there was only one recurred case in three months among 15 cases who had both chemotherapy and radiotherapy. One of them lost fellow-up. The 2-year survival rate was 69.2%. Conclusion: There is no specific clinical manifestation for PCNSL. The pathological examination is a reliable method to confirm PCNSL. Recurrence may occur after surgery alone, however, the combination of HD-MTX chemotherapy and radiotherapy is an effective and safe therapeutic option, which might improve the treatment efficiency and survival rate.
基金Supported by Shanghai Education Committee Project Foundation (06BZ040)
文摘Objective To develop and evaluate the rat model of chronic glaucoma by episcleral veins ligation （EVL）. Methods Experimental glaucoma was induced unilaterally in 28 male Sprague-Dawley rats by ligating two episcleral veins. Intraocular pressure （10P） in rats was measured by a Goldmann applanation tonometer under 3 % pentobarbital sodium anesthesia. The optic nerve head and retinal vasculature were assessed by repeated fundus examinations. The amount of optic nerve axons was assessed by Image-Pro Plus image analysis system in a masked fashion. Results lOP without EVL was （ 19.21 ± 1.23） mmHg, whereas the EVL eyes gained about 1.8-fold higher 10P[ （33.96 ±2. 73） mmHg]after EVL immediately （ P 〈 0. 001 ）. The elevated IOP gradually decreased over time. However, the differences were kept significant up to 8 weeks after EVL. The lOP was reduced to similar levels as contralateral eyes at 12 and 16 weeks after EVL. The glaucomatous optic nerve excavation appeared in EVL eyes at 8 weeks after EVL, and the optic nerve excavation enlarged gradually with the increasing post-operation time. The amount of optic nerve axons also significantly decreased in EVL eyes at 8 weeks after EVL, and the amount of axons decreased gradually with the increasing post-operation time. Conclusion Increase of lOP caused by EVL represents a useful and efficient model of experimental glaucoma in rats.
文摘The Unified Power Flow Controller （UPFC） is one of the most versatile Flexible AC Transmission Systems （FACTS） devices that has unique capability of independently controlling the real and reactive power flows, in addition to regulate the system bus voltage. This paper presents performance analysis of Unified Power Flow Controller based on two axis theory. Based on this analysis, a new Artificial Neural Network （ANN） based controller has been proposed to improve the system performance. The controller rules are structured depending upon the relationship between series inserted voltage and the desired changes in real/reactive power flow in the power system. The effects of different controllers along with parameters of series transformer and transmission line have been investigated through developed control block model in SIMULINK tool box of MATLAB. The effectiveness of the proposed scheme is demonstrated by case studies.
基金Supported by Anhui Provincial Colleges science research platform team building program:2015TD033Provincial demonstrating experiment and practice training center:20100541
文摘Objective To systematically evaluate the efficacy of heat-sensitive moxibustion in treatment of cervical spondylotic radiculopathy（CSR）. Methods Chinese National Knowledge Infrastructure（CNKI）, China Biology Medical（CBM） database, Chinese Science and Technology Periodical Database（VIP）, Wan Fang Data, Pubmed and Cochrane Library were retrieved to search the randomized controlled trials（RCT） on heat-sensitive moxibustion in treatment of CSR, and Meta analysis was conducted by applying Rev Man 5.3 software. Results Eventually, 10 papers were included in this study, including 1008 subjects. Meta analysis result showed： the total effective rate of treatment group was higher than that of control group, and the difference was statistically significant [RR=1.13, 95%CI（1.06, 1.21）, Z=3.54, P=0.000 4]; the cure rate of treatment group was higher than that of control group, and the difference was statistically significant [RR=1.80, 95%CI（1.52, 2.13）, Z=6.82, P〈0.000 01]; the improvement of short-form Mc Gill pain questionnaire（SF-MPQ） of treatment group was superior to that of control group, and the difference was statistically significant [MD=–4.44, 95%CI（–6.38,-2.50）, Z=4.49, P〈0.000 01]; visual analogue scale（VAS） of treatment group was lower than that of control group, and the difference was statistically significant [MD=-0.36, 95%CI（-0.50, –0.23）, Z=5.42, P〈0.00001]; and the improvement of interleukin-6（IL-6） of treatment group was superior to that of control group, and the difference was statistically significant [MD=–7.32, 95%CI（-11.49, –3.14）, Z=3.44, P=0.000 6]. Conclusion It is indicated from the Meta analysis result that the clinical efficacy of heat-sensitive moxibustion or acupuncture combined with heat-sensitive moxibustion in treatment of CSR is superior to that of simple acupuncture or traditional suspended moxibustion, providing a new therapeutic method for treatment of CSR. However, the abovementioned conclusion still needs to be confirmed through randomized blind controlled trials with high quality and large sample size since the sample size of included studies was small, and the quality was low.
文摘Objective： To assess the efficacy and safety of mouse nerve growth factor （mNGF） in patients with peripheral nerve injury. Methods： Such electronic database as Cochrane Library （Issue 1,2011）, Medline （1950-2011）, Embase （1980- 2011）, National Knowledge Infrastructure （ 1979 -2011 ） were searched and meanwhile relevant journals such as Chinese Journal of Orthopaedics, Chinese Journal of Microsurgery, Chinese Journal of Neurosurgery, ere were searched as well to collect all randomized controlled trials and quasi-randomi- zed controlled trials of mNGF on patients with peripheral nerve injury. The quality of included studies was assessed according to the criteria recommended by the Cochrane Handbook for Systematic Reviews of Interventions and the data were extracted by two reviewers independently. Meta- analysis was conducted by RevMan 5.1 software. Results： Forty-one studies involving 3 304 patients with peripheral nerve injury were included. The results of meta-analysis showed that： （1） the total effective rate ofperipheral nerve injury treatment in mNGF group was obviously higher than that in control group （OR=6.36, 95% C1 4.96-8.15, P〈0.01）; （2） the scores of activities of daily living （ADL） in mNGF group was significantly higher than that in control group （weighted mean difference=1.97, 95% CI 1.33- 2.61, P〈 0.0 l）; （3） the incidence of adverse reaction in mNGF group was higher than that in control group, （OR= 1.66, 95% CI 1.61-2.38, P=0.006）, but the adverse effects were mild, which could be relieved without specific treatment or just given symptomatic treatment, and disappeared at the end of treatment. Conclusions： The mNGF therapy is effective for peripheral nerve injury. It can obviously improve patient＇s ADL. Though the incidence of adverse reaction in mNGF treatment group is higher than that in control group, this does not influence the treatment outcomes.
