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An electroencephalogram is a recording of brains spontaneous electrical activity. This is controlled by billions of neurons. These neurons continually send messages to each other which can be picked up as electrical impulses from the scalp. The process of picking up and recording the impulses is known as EEG. An EEG can be divided into four basic frequency bands namely delta, theta, alpha and beta...
Glaucoma is the major reason that causes blindness today. It results in total loss of vision which is irreparable which makes it mandatory to detect it at early stages. This paper proposes a simple method to evaluate the Cup-to-Disc Ratio (CDR) of a retinal fundus image to screen it for Glaucoma. It is a contrasting feature taken up to check whether the subject is at risk for Glaucoma or not. The...
EEG is a cortical record of brain dynamics. Neural correlate is the relationship between the external stimuli and the state of neurons. The neural activity in various regions of brain may be related or unique to stimuli. Here we have acquired the EEG of subjects in relaxed state and compared it with their EEG while performing short term memory tasks. We have been found that frontal and prefrontal...
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