EEG and Epilepsy Essay Example | Topics and Well Written Essays - 1500 words

EEG and Epilepsy - Essay showcaseIn the brain, there is a three-dimensional volumes of cerebral cortex from which the electroencephalographic (EEG) signal is generated. Each dimension of the cortex produces unique signal and hence three different potential signals ar are produced within the brain. both of the signals are recorded from the surface of the scalp where they are recorded as two-dimensional fields against the voltage. This technique is accomplished by determining the physical and functional components of the EEG cortical generators.After determining the record and the location of the EEG fields, the signal of the pd is characterized and graded according to inhibitory postsynaptic potentials (IPSPs) and excitatory postsynaptic potentials (EPSPs)According to the dissimilar tests that have been conducted on EEG fields, Epileptic spikes are negatively charged in nature. This is mainly caused by the depolarization of the superficial laminae. After the depolarization cycl e, the subsequent repolarization cycle brings about the recurrent excitation and forbiddance among laminae. This causes a sequence of negative spikes that normally translate to a negative wave detected by the electrodes.The Committee of the International Federation (CIF) of the body governing Electroencephalography and Clinical Neurophysiology (IFSECN) have made the recommendations that the placement of a specific system of electrode under standard conditions for use in all medical laboratories. The system, branded as the international 10-20 system, gives specific measurement parameters from bony landmarks and hence used to determine the nature of electrodes.Anatomical landmarks are useful in this technique as they give specific measurements made, and then approximately10% to 20% of a specify distance is useful in the electrode interval. The specific measurement enables the consistently in replication over fourth dimension and between laboratories and hence the system is very rel iable. However, a lot of vigilance