Calculation of linear parameters, such as time-domain and frequency-domain analysis of heart rate variability (HRV), is a conventional method for assessment of autonomic nervous system activity. Nonlinear phenomena are certainly involved in the genesis of HRV. In a seemingly random signal the Poincaré plot can easily demonstrate whether there is an underlying determinism in the signal. Linear and nonlinear analysis methods were applied in the computer words inputting experiments in this study for physiological measurement. This study therefore demonstrated that Poincaré plot was a simple but powerful graphical tool to describe the dynamics of a system.
Autonomic Nervous System ; physiology ; Heart Rate ; Humans ; Linear Models ; Nonlinear Dynamics

Objective To investigate the bladder responses to different rates of bladder infusion in healthy and spinal cord injured rats.Methods Fourteen adult female Sprague-Dawley rats were used and divided into two groups:healthy group (n =7) and spinal transection injury group (n =7).The intravesical pressures induced by continuous infusion of saline with different rates under general anesthesia were recorded and compared between the two groups.Results In healthy group the responses of bladder contraction were dependent upon the rate of bladder infusion,and contraction time became shorter while increasing the infusion rate (P ＜ 0.05),i.e.contraction time was (401.0±132.4),(215.7 ±95.9),(108.3 ±59.1) and (52.5 ±32.8)s,respectively,when the infusion rate was 0.05,0.1,0.2 and 0.5 mL/min.Compared with healthy group,spinal transection injury group had significantly shorter bladder contraction time (P ＜ 0.05),however the relationship between bladder contraction time and infusion rate was much weakened.Spinal transaction injury rats had significantly lower peak of bladder pressure (P ＜ 0.05) compared with healthy rats.There was no significant difference for contraction durations between the two groups.Conclusions The infusion rates influenced the contraction periods for both healthy and spinal cord injured rats.During bladder infusions with a same rate,the contraction time and the peak of bladder pressure were determined by bladder conditions,i.e.healthy or neurogenic with spinal cord injury.

Child ; Humans ; Karyotyping ; Male ; Osteochondrodysplasias ; classification ; diagnosis ; genetics

Adult ; Dimethylformamide ; adverse effects ; Glutathione ; blood ; Humans ; Male ; Methanol ; adverse effects ; Nitric Oxide ; blood ; Occupational Exposure ; Oxygen ; metabolism ; Superoxide Dismutase ; blood ; Surveys and Questionnaires ; Toluene ; adverse effects

Child, Preschool ; Dwarfism ; congenital ; diagnosis ; Humans ; Male ; Osteochondrodysplasias ; congenital

Humans ; Infant, Newborn ; Male ; Protein C ; metabolism ; Protein C Deficiency

Adult ; Chromium Alloys ; adverse effects ; Crowns ; adverse effects ; Female ; Foreign Bodies ; etiology ; Foreign-Body Reaction ; Gingiva ; surgery ; Gingival Hyperplasia ; etiology ; surgery ; Gingivectomy ; Humans ; Metal Ceramic Alloys ; adverse effects

The present paper proposed a central-driven structure of upper limb rehabilitation robot in order to reduce the volume of the robotic arm in the structure, and also to reduce the influence of motor noise, radiation and other adverse factors on upper limb dysfunction patient. The forward and inverse kinematics equations have been obtained with using the Denavit-Hartenberg (D-H) parameter method. The motion simulation has been done to obtain the angle-time curve of each joint and the position-time curve of handle under setting rehabilitation path by using Solid Works software. Experimental results showed that the rationality with the central-driven structure design had been verified by the fact that the handle could move under setting rehabilitation path. The effectiveness of kinematics equations had been proved, and the error was less than 3° by comparing the angle-time curves obtained from calculation with those from motion simulation.
Biomechanical Phenomena ; Humans ; Models, Biological ; Robotics ; Stroke Rehabilitation ; Upper Extremity

The number of people with physical disabilities is increasing year by year, and the trend of population aging is more and more serious. In order to improve the quality of the life, a control system of accessible home environment for the patients with serious disabilities was developed to control the home electrical devices with the voice of the patients. The control system includes a central control platform, a speech recognition module, a terminal operation module, etc. The system combines the speech recognition control technology and wireless information transmission technology with the embedded mobile computing technology, and interconnects the lamp, electronic locks, alarms, TV and other electrical devices in the home environment as a whole system through a wireless network node. The experimental results showed that speech recognition success rate was more than 84% in the home environment.
Computers ; Disabled Persons ; Humans ; Speech Recognition Software ; Wireless Technology

AIM: To observe the effects of puerarin on blood pressure(BP),serum lipid in a rat model of insulin resistance and the mechanism.METHODS: Adult SD rats were maintained on high-fat-sugar-salt diet for 12 weeks.Puerarin was administered to the rats from 9th week for 4 weeks by intramuscular injection.BP was measured at the end of 0,8th,12th week.The levels of serum glucose,serum lipid,fasting serum insulin and the levels of MDA,TNF-?,plasma rennin,angiotensinⅡ(AngⅡ) and the activity of SOD were measured and the insulin-sensitivity index was also calculated at the end of the experiment.RESULTS: High and middle dosage of puerarin significantly decreased blood pressure,reduced the levels of serum lipid and AngⅡ,and also increased insulin-sensitivity index.The levels of MDA and TNF-? were significantly decreased by high dosage of puerarin.The activity of SOD was increased significantly.CONCLUSIONS: Puerarin possesses the effects of decreasing the blood pressure and serum lipid in a rat model of insulin resistance,which may be concerned with the changes of rennin-angiotensin system,the levels of oxygen-derived free radicals and TNF-?.