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Autism spectrum disorder is a developmental disorder such as Asperger's or Rett Syndrome, which damages social interaction and contact with the environment of individuals that prevents brain development. In Turkey, 600,000 cases of autism spectrum disorder is known and one-third of this population is estimated as the children in the age range of 0-14. Specials therapies with private trainers are used...
Diffusion MRI technique is widely used to investigate structural connectivity of the brain. In this study, a novel method to calculate the shortest paths connectivity is proposed and evaluated on a diffusion phantom. The results demonstrate a high sensitivity to the chosen local connectivity measure. Beside, parallel structure and ability to estimate connectivities for multiple seeds simultaneously...
Approaches performed based on computer supported systems within the medical field gain more popularity day by day. In such systems, Artificial Intelligence techniques are often used for several disease diagnostics. Diabetes is one of these diseases. In this study, a diabetes diagnosis system based on Support Vector Machines has been proposed. Along training of SVM, Vortex Optimization Algorithm was...
During the lifetime, one of the most involuntary or voluntary movements of the human body is blinking eyes. The main purpose of ongoing scientific researches is to obtain a meaningful and fundamental data by observing eye blink movement, which might give some valuable information for other research subjects. Eye blink data is being frequently analyzed and processed for different application fields...
Sleep can be expressed as an active process that circadian rhythm is entegrated with nervous system. Sleep disorders may appear during the sleep. Apnea, which is defined as the respiration stops more than 10 seconds during sleep, is the most important problem among the sleep disorders. In this study, prediction of apnea has been investigated statistically using features extracted from respiratory...
Despite modern imaging technologies, problems are faced in quantitative brain morphology studies. Since the structural and functional organization of the human brain is complex, advanced methods are needed. Current methods are incapable of detecting complete shape anomalies. Moreover, the rapidly increasing volume of image data forces development of image analysis methodologies that can be processed...
Mental activity is an ongoing case in a continuous manner at every stage of human life. Attention was defined as the process of focusing on specific mental activity by brain. Attention is analyzed with specific tests for many years and evoked potential (EP) studies from a more recent era started to work using the signals. EPs has great reputation in the health sector as it includes more objective...
Brain computer interface (BCI), is a direct communication pathway between brain signals and an external device which often serves to support cognitive and emotional motor functions. The implementation and design of a human computer interface (HCI) based on opened-closed eye movements and arousal - valence measurements are aimed. The goal is to develop a system that working with wireless EEG headset...
Use of wavelet transform for the analysis of bioelectric signals has gained momentum and effective results have been obtained through this method. In this study, we have applied the wavelet analysis to the electrocardiogram (ECG) signal for the better detection of heart rate. Wavelet analysis is used for the elimination of baseline wandering and elimination of the highfrequency noise. Heart rate detection...
Diagnosis and treatment of various brain diseases occurring due to aging such as dementia, take an important role in contemporary research for elderly population in the world and in our country with increasing progressively. Cerebral atrophy is a feature observed in dementia patients and described as neuronal loss or cell death affecting part or all of the brain, to determine the presence and severity...
Wireless Body Area Networks (WBAN) are an important component of medical monitoring systems. A WBAN includes sensing nodes (SNs) and an access point (AP). A SN is an embedded devices that is capable of sensing many vital physiological and biological data such as body temperature, blood pressure and electrocardiogram (ECG), etc. from human body and sending them to the AP using its wireless interface...
In this study, the classification of the most common benign lesions, cysts and hemangiomas in liver was achieved using magnetic resonance (MR) images. T1 venous phase of 68 liver MR images were used for the classification, including 28 cysts and 40 hemangiomas MR images. Liver segmentation was done by expert radiologists using MR images. Then automatic windowing was applied to images to reduce the...
The main subject in this study is to monitor the changes of EEG power spectrum during sevoflurane general anesthesia and to determine the variables which show meaningful changes for anesthetic depth. Sevoflurane has been suggested as a suitable agent for anesthetic induction. The data base was constructed of the records from a total of 25 patients. During the operation blood pressure, heart rate and...
Reaction time is defined as the period of time between the giving of the warning and arrival of appropriate voluntary response in the subject. There are many factors that adversely affect on reaction time, one of which is fatigue. Muscle fatigue is an undesirable physiological condition that frequently occurs after our daily activities or sports activities.
External fixators are robotic devices widely used in orthopaedics. While bringing the bone fragments to a desired position, these devices should not present any threat to the patient health. One of the threat causes is singularity. In a singular position, stable structure of the fixator is lost and its top and bottom rings may move independently. In this work, singularity analysis is performed with...
In this study, A graphical user interface based on MATLAB® was developed for an easy filtering of digital images and comparison of several image denoising methods. As well as standard digital images, medical image formats can also be used with the help this program. Additionally, to evaluate the performances of different noise filtering methods, some measures such as signal to noise ratio are calculated...
In this study, a portable electrooculogram (EOG) data acquisition sytem were designed and applied for human computer interface (HCI) applications. EOG signals sensed from horizontal and vertical eye movements were detected in the system by 5 Ag-AgCl electrodes. Biopotential signals were applied to the amplifier and filter circuits that were designed. Then EOG analogue data were obtained between the...
This paper studies various mathematical models for the process of synchronization between the master oscillator SA and follower oscillator AV nodes, which are driving centers of the electrical activity of the human heart. A lack of synchronization between the two nodes is reportedly the underlying cause of different types of cardiac arrhythmias. Thus, in our study, we simulated a similar pathological...
Complex motor movement exercises consist of a series of bodily exercises, and they are thought to be having positive effects on humans' cognitive abilities. The current study was conducted with football players to analyze these assumptions. Football players have trained with a series of bodily exercises for a month of period. Before and after the training, sustained attention and inhibition performances...
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