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What happens in Brain during Seizure Neurobiology
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=lT6N06h-OPA
This EEG was recorded while a patient was experiencing an absence seizure. The first characteristic finding that may come to your attention is the sudden change in activity that occurs about half-way through this reading. While the first half is normal, with a posterior dominant rhythm, the second half begins with an abrupt onset of epileptic discharges. After inspecting the EEG from top to bottom, we note that the discharges occur in every lead. Or in other words, the epileptic activity is generalized. • When following a lead from the start of the epileptic discharges to the end of the EEG, a repeating pattern becomes evident. With a closer look, we can see that each the repeating complex consists of a spike and a wave. Lastly, we need to determine frequency of the complexes. Now as you may be aware, the vertical bars are separated by a duration of one second. Counting the number of spike-wave complexes that occur between two bars, we find that approximately 3 occur per second. The frequency of the these complexes, however, is variable and not necessarily consistent from start to finish. They often begin with a higher frequency and slow down a little before abruptly ending. • 🌐 Check out our website for more video lectures • https://www.med4vl.com • 📺 Subscribe To My Channel and Get More Great Quizzes and Tutorials • / @med4vl • Disclaimer: All the information provided by Medical Education for Visual Learners and associated videos are strictly for informational purposes only. It is not intended as a substitute for medical advice from your health care provider or physician. It should not be used to overrule the advice of a qualified healthcare provider, nor to provide advice for emergency medical treatment. If you think that you or someone that you know may be suffering from a medical condition, then please consult your physician or seek immediate medical attention.
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