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For a retinal prosthesis, retinal nerve cells are electrically stimulated by current pulses. Typically, the amplitude of the current pulses is modulated to control the amount of injected charges. However, a high spatial resolution can be difficult to achieve with this amplitude modulation method, because the neural response spreads more widely as the amplitude of the current pulses is increased. In...
Recent decades have seen BCI applications as a novel and promising new channel of communication, control and entertainment for disabled and healthy people. However, BCI technology can be prone to errors due to the basic emotional state of the user: the performance of reactive and active BCIs decrease when user becomes stressed or bored, for example. Passive-BCI is a recent approach that fuses BCI...
Transcranial direct current stimulation (tDCS) has been used to affect the excitability of neurons within the cerebral cortex. Improvements in motor learning have been found in multiple studies when tDCS was applied to the motor cortex during or before task learning is performed. The application of tDCS to motor imagery, a cognitive task showing activation in similar areas to motor execution, has...
An experimental research of the drug pyrazinamide is analyzed and tested with potentiometric method. By understanding the biomechatronic system, consisted of a mechanism of action of the drug Pyrazinamide in a biological system, and an electrical signals, voltametric measures, a method to detect resistance to this specific drug is developed and tested firstly in vitro, then in cultures and finally...
In this paper, a new type of tunable frequency selective surface (FSS) based on single layer graphene for terahertz (THz) applications is proposed. To apply the gate voltage, a metal wire-array is designed. A broad tunable band of 0.68–1.42 THz is achieved by tuning the Fermi level and hence surface conductivity of the graphene layer. In addition, a modulation depth of 78% for reflectance and 70%...
The authors measured electroencephalograms (EEGs) from subjects looking at line drawings of body parts and recalling their names silently. The equivalent current dipole source localization (ECDL) method is applied to the event related potentials (ERPs): summed EEGs. ECDs are localized to the primary visual area VI, to the ventral pathway (ITG: Inferior Temporal Gyrus), to the parahippocampus (ParaHip),...
In this paper, we describe our investigation to explore cortical oscillation properties in the emotional auditory experiment by analyzing the significant effects of the power spectrum. We have collected the 18 channel EEG signals over 30 subjects (males) under the standard IADS affective sounds as the stimuli. These affective sound clips are classified in three emotional states, happy, neutral and...
Compared to the conventional robot, the biorobot is capable of higher-level intelligence and will be more effective at overcoming unexpected perturbations during the navigation of different environments. Such biorobots are not only able to fulfill the abovementioned applications but can also be used for ecosystem studies of organism interaction. Based on the review of current literature, insects such...
Experimental investigations of the electrode system design influence on air electric wind velocity in plasma chemical reactor are presented. The velocity growth with quantity of the corona-forming electrodes increasing is demonstrated. An analytical calculation of the electric wind velocity is performed.
The generalized predictive control based on T-S fuzzy model is applied to electrode regulator systems of industrial arc furnace in this paper. T-S fuzzy model is constructed for electrode regulator system, and orthogonal least-squares method is used to identify the parameters of fuzzy ruler consequents. Local dynamic linearization is applied to the system at each sampling point. Then control action...
This paper demonstrates the electronic structures of SiO2 films in low-resistance state and high-resistance state. The electronic structure is also characterized spectroscopically by means of the current fluctuation.
Submerged arc furnace is a system with strong coupling, nonlinearity and time-variability. In this paper, a logistic-interpolation-based fuzzy controller for electrode regulation of submerged arc furnace is proposed. The proposed controller is based on fuzzy logic control strategy, and interpolation algorithm is employed to improve the control accuracy without raising complexity of the controller...
The generalized predictive control is applied to the industrial arc furnace electrode regulator system. The detailed design procedure of the generalized predictive controller is presented. Based on multi-step prediction, rolling optimization and online correction, the optimal control law is obtained. The results of simulation show that this proposed algorithm can restrain arc disturbance effectively,...
The electrolysis of water is an electrochemical process wherein hydrogen and oxygen are derived. The resulting mixture of oxygen and hydrogen is called oxyhydrogen or Brown's gas. This paper present an experimental study of the regime of operation of an oxyhydrogen (HHO) generator depending on the parameters of the electrolyte — concentration and temperature by monitoring the amount of gas produced...
Based on electrical capacitance tomography (ECT) technology and support vector machine (SVM) algorithm, a new method for all-around identification of two-phase flow pattern is proposed combining radial information with axial information of the gas-solid two-phase flow. Compared with the conventional sectional identification method, this method adds another axial one and thus providing more information...
In this study, we investigated the electric field distribution and transmission characteristics between a stationary device and an arm-mounted wearable human body communication device including earth ground. The results showed that when the stationary device signal electrode is excited, the electric field distribution around the legs and torso becomes weak when there is an earth ground as compared...
Our goal is to develop a high-spatial resolution and high signal-to-noise electroencephalography (EEG) recording system. Conventional scalp EEG is contaminated by noise represented by non-brain electrical activity such as ocular artifacts, scalp muscle potentials, electrocardiogram, etc. Conventional disc EEG recordings also have reference electrode problems. To overcome the problems of the disc electrodes...
Blindness is the most serious ailment that people suffer. The main motive to build Bionic eye is to copy human eye neural circuit, it aims at restoring the lookout vision to people living with blindness and low vision‥
Identifying artifacts in EEG data produced by the neurons in brain is an important task in EEG signal processing research. These artifacts are corrected before further analyzing. In this work, fast fixed point algorithm for Independent Component Analysis (ICA) is used for removing artifacts in EEG signals and principal component analysis (PCA) tool is used for reducing high dimensional data and spatial...
In recent years, the detection of voluntary motor intentions from electroencephalogram (EEG) has been used for triggering external devices in closed-loop brain–computer interface (BCI) research. Movement-related cortical potentials (MRCP), a type of slow cortical potentials, have been recently used for detection. In order to enhance the efficacy of closed-loop BCI systems based on MRCPs, a manifold...
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