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Stroke patient rehabilitation by treadmill tends to increase in recent years. The rehabilitation on treadmill needs more than two staffs per patient to control the process and protect them from falling. As a result, it takes too much time and resource to operate. To resolve this problem, this paper proposes to develop an automatic sensor that is simple and easy to use by using ultrasonic sensor and...
Virtual reality technology is common used to entertain people as movies or games. At present, this technology applies to medical field for training surgeon on operating simulation or patients with either neurological disease or psychiatric disorder. The study focused on the algorithm of pattern classification. The artificial neural network was considered to achieve this classification. The multilayer...
This paper presents gait identification method based on Finite Impulse Response (FIR) system characterizing motion of leg. First, the four gait features, area of footstep, angle of footstep, height and width of the human silhouette image, are calculated from the human silhouette image. Then they are expanded into Fourier series to reduce the fluctuation of human body motion. The motion of leg can...
Online EEG artifact suppression system is a crucial function of real-time Brain Computer Interface (BCI) applications. EEG artifacts significantly affect the accuracy of feature extraction and data classification for estimating cognitive states in Neurofeedback Training (NFT) systems. The EEG artifacts derived from ocular and muscular activities are inevitable and unpredictable due to subject's physical...
Recent technological advances in wireless body sensor networks (WBSN) have made it possible for the development of innovative medical applications to improve health care and the quality of life. Electroencephalography (EEG)-based applications lie at the heart of this promising technologies. However, excessive power consumption may render some of these applications inapplicable. Hence, intelligent...
Telecommunication systems for the pharmacists to support the outpatient medical treatment have been gaining attention. However in the conventional systems, low usability and interactivity of the system became key problems to support medication. In this research, we developed a patients-pharmacists interactive communication system and investigated it's benefit through a 2-month field trial. We carried...
With the widespread adoption of increasing and high-throughput sequencing data, the need for easy access to biomedical analysis tools, efficient data sharing and retrieval has presented significant challenges. Galaxy helps to address this problem by providing an open, Web-based platform for performing accessible and reproducible genomic analysis. To meet the needs for variable computing and storage...
Conventional drowsiness detection devices are usually equipped with infrared LEDs and CCD cameras; however, they are adversely affected by factors such as ambient light and the use of eyewear. Drowsiness detection by other methods would thus improve such devices. This study examines skin potential activity, which is not affected by the aforementioned factors. Response performance during monotonous...
An epileptic EEG exhibits various temporal characteristics corresponding to different states of the brain. In this paper, the temporal characteristics of wavelet subbands of scalp epileptic EEG associated with different states of the brain is examined based on an average amplitude of local minima and maxima, referred to as the average local min-max amplitude. The computational results show there are...
A binary search method for fast identification of the time-constant in first order systems is proposed. The unimodality of the Root Mean Square Error (RMSE) is exploited to achieve fast convergence. As an application example, the method is applied to the oxygen transport system of a preterm infant. Performance of the proposed binary algorithm is compared with a direct search method for two different...
To study rat behavior have been playing an important role in psychology, medical science and brain science. Open-field test such as holeboard model is a popular experiment to analyze rat behavior. Rat behaviors such as walking, rearing and head dip are usually considered. These behaviors are observed and recorded by human that, obviously, included human errors. Commercial products have limitation...
MRI images are affected by Rician noise due to the magnitude image formation. Presence of Rician noise can significantly affect the image quality and contrast ratio of an image. In this paper we propose an adaptive filtering technique for Rician noise. Rician noise displays varying distribution characteristic depending on the SNR of the image. Based on the probability distribution function of noise...
We describe a small animal SPECT imager based on scintillation crystal arrays and position sensitive photomultiplier tube (PSPMT). This SPECT detector consists of a cerium doped lutetium-yttrium oxyorthosilicate (LYSO) scintillation crystal (22 × 22 pixel array, 2 mm × 2 mm × 3 mm pixel size), a H8500c PSPMT (Hamamatsu Photonics Co., Ltd., Shizuoka Prefecture, Japan), and a parallel hole collimator...
Function impairment in chronic gait can be caused by abnormal neurological conditions, such as stroke, spinal cord injury, and traumatic brain injury. Only a limited degree of motor function recovery can be provided by using current physiotherapy techniques. Brain-computer interface (BCI) is a modern novel technology with a potential to substitute or restore lost motor behaviors in patients with neurological...
Nitric oxide (NO) is a key oxidative stress marker. Real time NO measurement in pA/nM by electrochemistry is the powerful tool explores pathophysiological process of many disease including stroke subtypes, especially, lacunar stroke. In this study, we investigate the performance of classification models by hybrid nonlinear kernel function of NO obtained from healthy control and lacunar stroke. The...
This paper proposes a method for accurate measurement of a three-dimensional of an eye's pupil by combining local stereo images which are acquired from multiway. A calibrated mini CCD camera is used to capture the side-by-side image of one eye by two plane mirrors to create a reflection of the two directions of the eye at a time. The center of mass is used for two-dimensional coordinates of the center...
In this research, we propose a natural interaction on 3D medical image viewer software. The goal is to replace the windows, icon, mouse and pointer (WIMP) paradigm which might not be convenient in an operating room as sterilization becomes an issue. The Kinect sensor was used as a controller-free input. The fingertip tracking algorithm was implemented and, combined with existing skeletons from the...
Currently, forensic electronics and computers become an attractive scientific and engineering application area. They are applied to determine and identify accused or evidences used in court. However, the determination, verification and identification processes have been manually executed by experts, where they take time to come out conclusions and results. With rapidly increment of illegal cases,...
The optimal feature is necessary for the reach of electromyography (EMG) control or human-machine interface. This study aimed to find the optimal feature of time-domain features. Five oral muscles movements were performed in five volunteers. The oral activities were open mouth, protrude mouth, broad smile, straight tongue, and up tongue which were the parts of non-speech oral motor treatments. Sixteen...
The Strabismus affects about 4% of the children population, causing amblyopia disease. However, this problem can be found by the Hirschberg test that is one of the exams used to detect this pathology. This work presents a methodology for automatic detection of strabismus in digital images through the Central corneal light reflex ratio (CCLRR) based on digital image processing. The proposed algorithm...
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