Bogazici University Digital Archive: Recent submissions

  • Cerebrovascular reactivity of free divers measured with fNIRS 
    Nevşehirli, Turan Deniz. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2008., 2008.)
    Although breath-hold diving is nowadays practiced as a competitive sports dis- cipline, its underlying physiological mechanisms enabling divers to tolerate great dive depths and durations are still not fully understood. E ...
  • A computer aided biofeedback system 
    Aybey, İ. Melih. (Thesis (M.S.) - Bogazici University. Institute of Biomedical Engineering, 1986., 1986.)
    Biofeedback devices, unlike other medical devices, are not used in order to monitor a disordered physiological function. They are aimed to be used in training work to gain control over any physiological variable which may ...
  • EMG pattern classification based on AR modeling 
    Erim, Zeynep. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 1986., 1986.)
    Myoelectric control of powered prostheses is a field of rehabilitation engineering that has received wide attention in the recent decades. In this thesis a historical perspective of the studies in the field is given. The ...
  • Real time temperature measurement using gradient echo magnetic resonance imaging 
    Büyükgüngör, Volkan. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2008., 2008.)
    Heat induced local therapies play a signi cant role in several medical procedures, a major eld being tumor ablation. Regardless of the temperature range and the heat application method of these di erent hyperthermia ...
  • Three-dimensional finite element modeling of pacinian corpuscle 
    Yelke, Serkan. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2008., 2008.)
    Understanding the mechanics of Pacinian corpuscle (PC) is a fundamental necessity in order to contribute to tactile sense studies. It is proposed that the geometry of PC may have impact on its mechanics. A three-dimensional ...
  • Stimulus frequency dependency of post stimulus undershoot of the BOLD fMRI signal 
    Alper, Ahmet Sabri. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2008., 2008.)
    The aim of this study is to investigate the effects of different stimulation frequencies on post stimulus undershoot of the blood oxygen level dependent functional magnetic resonance imaging signal. A fiber optic light ...
  • Working memory performance assessment while monitoring the prefrontal cortex hemodynamics by means of functional near infrared spectroscopy 
    Kırımlı, Ceyhun Ekrem. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2008., 2008.)
    One of the popular experimental paradigms for functional neuroimaging studies of working memory (WM) has been the n-back task, in which subjects were asked to monitor the identity or location of a series of verbal or ...
  • Nonlinear time series analysis of monkey vocalizations 
    Yavuz, Esin. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2008., 2008.)
    Primate vocalizations are produced as a result of interactions between and within the simple vocal system and the complex signal coming from the nervous system. As a consequence of the nature of this organization, the ...
  • Design of a software platform for the quality control of main blood products 
    Akyon, Sıtkı. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2007., 2007.)
    In modern blood banking services, blood banks and transfusion services, follow a standard operation procedure during preparation and the quality control of blood components. The Quality Management involves identification ...
  • Importance of hyoid region in voice quality 
    Bilgin, Volkan Adem. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2007., 2007.)
    Speech is a combined form of phonation and articulation in human beings. Both phonation and articulation implies the acoustic formation, which is the result of mechanical and aerodynamic forces. The acoustic system as a ...
  • Design of a medical equipment management software 
    Yardımcı, Evrim Ece. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2007., 2007.)
    In this thesis, a medical equipment management system is developed for online access to the medical assets in a healthcare facility to control, plan, schedule and manage the medical equipment preventive maintenance and ...
  • Optical tactile array sensor for lump detection in soft tissue 
    Yıldız, Mustafa Zahid. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2007., 2007.)
    Tactile information has great importance in many areas. Receiving tactile information from a slave-robot is a necessary component of tele-detection with tactile display. Surgeons highly depend on tactile feedback in minimally ...
  • Low level laser therapy on human adipose tissue derived mesenchymal stem cells 
    Güngör, Perihan Selcan. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2007., 2007.)
    Recent in vitro studies on cell cultures provided that low level lasers have various biostimulatory effects on several tissues. Biostimulation of tissues and cells is an important issue in Tissue Engineering Applications ...
  • Examination of tissue temperature profile during photothermal interaction of laser irradiation 
    Köseoğlu, Muhammed Hakan. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2007., 2007.)
    During laser surgery, temperature measurement is critical in order to know the photothermal effect of laser irradiation on tissue. Depending on the duration and peak value of the temperature achieved, different tissue ...
  • Subband filtering of fNIRS data from schizophrenic subjects 
    Kara, Ercan. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2008., 2008.)
    Schizophrenia is a neurological disorder and typically persists for a life. Investigation of the cerebral hemodynamics of schizophrenic patients with a rapid, non-invasive and precise technique is required to improve the ...
  • An ARX model approach to fNIRS data acquired from migraine and healthy subjects 
    Karahan, Esin. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2007., 2007.)
    This study is focused on investigating the cerebrovascular dynamics of migraine by analyzing data acquired from healthy and migraine subjects with a noninvasive measuring technique, fNIRS during a breath holding task. Brain ...
  • Correlation between fMRI and source reconstructed EEG of steady state visual evoked potentials 
    Eryılmaz, Hüseyin Hamdi. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2007., 2007.)
    Electroencephalography (EEG) is a common technique for studying and understanding the functioning of the brain. In addition, functional Magnetic Resonance Imaging (fMRI), in the recent years has been a very conventional ...
  • Investigation of the effect of crystal thickness on the partial resolution and linearity of a pem detector using an artificial neural network based positioning algorithm 
    Talat, Didar. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2007., 2007.)
    The objective of this thesis is to improve the resolution and linearity of a continuous detector for positron emission mammography (PEM) imaging, by using an algorithm based on artificial neural networks. Another aim of ...
  • Improving medical diagnostic information through better usage of film technology 
    Kongur, Vahit. (Thesis (M.S.)- Bogazici University. Institute of Biomedical Engineering, 1986., 1986.)
    Photographic Quality Assurance is an important element of the quality assurance programs as applied in medical diagnostic imaging centers. This thesis addresses the problem of optimizing image quality in Turkey with respect ...
  • Micro-processor based automated arrhythmia monitoring system 
    Gemicioğlu, Cüneyt. (Thesis (M.S.) - Bogazici University. Institute of Biomedical Engineering, 1984., 1984.)
    Heart disease is a major cause of death; therefore patients with heart problems, i.e. those who had myocardial infarction are kept under medical observation. Most commonly used method for such observations is the Holter ...