Browsing by Author "Ademoğlu, Ahmet."

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  • Investigation of functional brain connectivity patterns in temporal lobe epilepsy 
    Dumlu, Seda Nilgün. (Thesis (Ph.D.)-Bogazici University. Institute of Biomedical Engineering, 2021., 2021.)
    In this study, functional connectivity using both Pearson and partial correla tion coe cients and inter-subject variability were investigated in resting state func tional resonance imaging (rs-fMRI) scans that belong to ...
  • Investigation of oscillatory mechanisms and thalamo-cortical circuitry of the visual system by simultaneous EEG-fMRI 
    Bayram, Ali. (Thesis (Ph.D.)-Bogazici University. Institute of Biomedical Engineering, 2015., 2015.)
    Neural oscillation is an indispensable phenomena in the functioning of the cortical networks. Evoked neural oscillations triggered by external rhythmic stimulation mimic spontaneous ongoing oscillations, thus could shed ...
  • Monitoring depth of anesthesia through measurement of phase coupling among spontaneous EEG rhythms 
    Mousavi, Seyed Mortaza. (Thesis (Ph.D.)-Bogazici University. Institute of Biomedical Engineering, 2014., 2014.)
    Awareness during general anesthesia for its serious psychological e ects on patients and some juristically problems for anesthetists has been an important challenge during past decades. Monitoring depth of anesthesia is a ...
  • Neuroimaging of brain activity using spatio-temporal signal modelling 
    Duru, Adil Deniz. (Thesis (Ph.D.)-Bogazici University. Institute of Biomedical Engineering, 2012., 2012.)
    Functional neuroimaging enables us to obtain information about how the brain responds to cognitive and/or emotional tasks. Neuroimaging of brain activity requires spatio-temporal modelling of measured electrical and/or ...
  • Nonlinear state and parameter estimation of the hemodynamic model using fMRI bold signal 
    Aslan, Serdar. (Thesis (Ph.D.)-Bogazici University. Institute of Biomedical Engineering, 2015., 2015.)
    The joint estimation of the parameters and the states of the hemodynamic model from the blood oxygen level dependent (BOLD) signal is a challenging problem. In the functional magnetic resonance imaging (fMRI) literature, ...
  • Predicting epileptic seizures of pediatric patients using phase-amplitude coupling and deep learning 
    Alqam, Lina Mahmoud Saleh. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2022., 2022.)
    Epilepsy is one of the most prevalent neurological disorders in the world. It is estimated that between four and six children out of every thousand suffer from epilepsy. Visually diagnosing seizure activity can be challenging ...
  • Source localization of electrical dipoles in electroencephalogram (EEG) 
    Duru, Adil Deniz. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2004., 2004.)
    As a noninvasive neuroimaging method, the dipole source localization of brain electrical activity has a much higher temporal resolution when compared with the functional magnetic resonance (fMRI) or Positron Emmision ...
  • Spatial analysis of event related brain potentials (ERP) by wavelet transform 
    Bayram, Ali. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2005., 2005.)
    Localization of the cognitive activity in the brain is one of the major problems inneuroscience. Current techniques for neuro-imaging are based on fMRI, PET, and ERPrecordings. The highest temporal resolution, which is ...
  • Spatiotemporal graph convolutional neural networks for motor imagery EEG classification 
    Alramly, Ahmed Mohamed Mohamed Mohamed. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2022., 2022)
    Electroencephalography (EEG) has various applications in medicine, neuro-science, and neural engineering. It records the electrical activity of the brain tissues caused by the interaction among different neuronal communities. ...
  • Sub-components of event related potentials (ERP) associated with polymorphisms in glutamate, gaba and dopamine neurotransmitter receptors 
    Beyazyürek, Çağrı. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2006., 2006.)
    Event related potentials (ERPs) reflect perceptual and cognitive processes andtherefore provide an electrophysiological window onto brain function during cognition.P300 component as well as spectral components of ERPs are ...
  • Surface based morphometry in Alzheimer's disease 
    Uluğ, Esma Ece. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2019., 2019.)
    Alzheimer’s disease( AD) is aneurodegenerativedisorderespeciallyaffectingthe elderlypopulationwhichisgrowingworldwide. Inthisstudy, surface-basedmorphometry analysis was performed on anatomical MR images of patients with ...
  • Tensor analysis of neuroimaging data 
    Karahan Şenvardar, Esin. (Thesis (Ph.D.)-Bogazici University. Institute of Biomedical Engineering, 2015., 2015.)
    Acquisition of large amounts of data in neuroimaging research requires development of new methods that can disentangle the underlying information and reveal the features related to cognitive processes. This thesis attempts ...
  • Time-frequency analysis of event related brain potentials elicited with four different cognitive paradigms 
    Keskin, H. Yasemin. (Thesis (M.S.)-Bogazici University. Institute of Biomedical Engineering, 2003., 2003.)
    Event related potentials (ERPs), which reflect fundamental cognitive operations, are generated by the parallel and/or the sequential processing of different neural groups in the brain. In time domain representation of ERPs, ...
  • Treatment of standardized femoral osteotomies using extracorporeal shockwave therapy (ESWT) 
    Utku-Bilgen, Feride Şermin. (Thesis (M.S.) - Bogazici University. Institute of Biomedical Engineering, 2001., 2001.)
    ESWT is used in treatment of pseudoarthrosis and may also be considered for distraction osteogenesis (callus lengthening) operations. In this study, effects of ESWT on the callus were studied. On 20 male, ten-week-old ...
  • Volumetric MRI analysis of thalamic stroke patients 
    Özel, Pınar. (Thesis (M.S.) - Bogazici University. Institute of Biomedical Engineering, 2011., 2011.)
    The thalamic pain syndrome is a weakly deduced phenomenon that develops as a complication of a small stroke in the thalamus. Because this is syndrome result in many diffrent physiological disturbances, it is critical to ...

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