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Connectivity Analysis Of Electroencephalograms In Epilepsy, Panuwat Janwattanapong
Connectivity Analysis Of Electroencephalograms In Epilepsy, Panuwat Janwattanapong
FIU Electronic Theses and Dissertations
This dissertation introduces a novel approach at gauging patterns of informa- tion flow using brain connectivity analysis and partial directed coherence (PDC) in epilepsy. The main objective of this dissertation is to assess the key characteristics that delineate neural activities obtained from patients with epilepsy, considering both focal and generalized seizures. The use of PDC analysis is noteworthy as it es- timates the intensity and direction of propagation from neural activities generated in the cerebral cortex, and it ascertains the coefficients as weighted measures in formulating the multivariate autoregressive model (MVAR). The PDC is used here as a feature extraction …
Funtional Near Infrared Spectroscopy Study Of Language, Joint Attention And Motor Skills, Ujwal Chaudhary
Funtional Near Infrared Spectroscopy Study Of Language, Joint Attention And Motor Skills, Ujwal Chaudhary
FIU Electronic Theses and Dissertations
Near infrared spectroscopy (NIRS) is an emerging non-invasive optical neuro imaging technique that monitors the hemodynamic response to brain activation with ms-scale temporal resolution and sub-cm spatial resolution. The overall goal of my dissertation was to develop and apply NIRS towards investigation of neurological response to language, joint attention and planning and execution of motor skills in healthy adults. Language studies were performed to investigate the hemodynamic response, synchrony and dominance feature of the frontal and fronto-temporal cortex of healthy adults in response to language reception and expression. The mathematical model developed based on granger causality explicated the directional flow …