Cortical generators of normal electroencephalographic waveforms: A literature review
Journal Title: Indian Journal of Clinical Anatomy and Physiology - Year 2018, Vol 5, Issue 3
Abstract
Introduction EEG is a useful noninvasive safe technique to study the electrical activity of brain in various physiological and pathological conditions like alertness sleep seizure activity Normal brain rhythms the electroencephalogram EEG represents the electrical activity of brain as recorded through the metal electrodes applied over scalp An insight to the possible source of EEG various rhythms and its activation during certain maneuvers can give a better understanding to its applicationsMaterials and Methods Number of electronic database as well as library resources were searched for related references included in published literature till 2017 using following key words cortical electroenchephalogram EEG EEG Rhythm EEG wave alpha wave beta wave theta wave delta wave Those which were related to our subject were included in the reviewResults Of the total number of studies we have finally included 35 studies from search results These are mentioned in the referencesConclusion Beta Alpha Theta Delta are produced from various regions of the brain including cortical thalamic networks hippocampus reticular networks and so on The rhythm of EEG can be correlated with the level of activation of the brain with beta wave being produced during alert state and delta wave being produced during deep sleep Interventions like hyperventilation and photic stimulation can be used to increase the diagnostic yield of EEG It has been seen that sexrelated differences do exist in the degree of lateralization of hemispheric functionKeywords Electroencephalogram Brain waves Cortex Thalamus EEG
Authors and Affiliations
Pooja Ojha, Nitin Pandey, Seema Singh
Keywords
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- EP ID EP476074
- DOI 10.18231/2394-2126.2018.0068
- Views 70
- Downloads 0
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