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    Detecting laterization of haemodynamic response during executive motor task and motor imagery with fNIRS
    (IEEE Computer Society, 2014) Gokdag, Y.E.; Sansal, F.; Dumlu, S.N.; Erdogan, S.B.; Yilmaz, O.; Akin, A.
    In this study, haemodynamic response strength during motor imagery and executive motor tasks are investigated through a general linear model using functional near infrared spectroscopy (fNIRS) data to discriminate neural correlation of right and left hand movement. A 16-channel fNIRS system is used over the prefrontal cortex during motor imagery and motor execution. Preliminary results shows that the activation of the prefrontal cortex during motor imagery task is related with high levels of cognitive processing, namely attentional engagement, rather than motor execution from the measurements using generalised linear model. Results show that fNIRS holds great promise as a tool for clinical studies, cognitive and behavioural neuroscience research. © 2014 IEEE.
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    Frontal brain activation during a Go/NoGo response inhibition task: An fNIRS study
    (IEEE Computer Society, 2014) Sansal, F.; Gokdag, Y.E.; Şahin, D.; Keskin, Y.; Yilmaz, O.; Akin, A.
    It has been known that in human brain, prefrontal cortex intensively controls the cognitive processes. In this study, functional near infrared spectroscopy (fNIRS) system has been used which is a promising method and has a relatively easier application. The aim of this study is to measure the prefrontal activity of the human brain using a Go-Nogo paradigm which is a common task to measure inhibitory activity in neuroscience field. We have investigated the inhibitory activity triggered by a Go-Nogo paradigm for the first time using fNIRS method with general linear model (GLM) analysis. © 2014 IEEE.