<p>A common feature of the epileptic disorders is a paroxysmal excitatory activity.</p>
<p>Epileptogenic activity can be seen in the presence of spike waves, sharp waves, and the presence of spike and slow waves. Additionally, fast beta and gamma can indicate a kindling rhythm in the EEG, reflecting an irritable cortex that is pre-disposed
    towards seizure. Very often seizure will manifest in temporal lobes, which are the most vulnerable lobes for this type of pathology.</p>
<p><b>Spike:</b> An epileptogenic transient can be seen in a spike (a transient with a duration of less than 70 msec, but more than 20 msc and commonly negative in polarity. Spike morphology has a step incline.&nbsp;</p>
<p><b>Sharp Wave:</b> A transient that is 80 – 200msec. Morphology is usually pointed and voltage ios usually high.</p>
<p><br></p>
<p style="text-align: center;"><img src="@@PLUGINFILE@@/widespread-epileptogenic-discharge.png" alt="Epileptiform Discharge as seen in classic Spike and Wave Phenomena" width="531" height="723" class="img-responsive atto_image_button_text-bottom"><br></p>
    <p style="text-align: center;">Figure : Epileptiform Discharge as seen in classic Spike and Wave Phenomena<br></p>
        <p></p>
		
<p style="text-align: center;"><img src="@@PLUGINFILE@@/epileptiform-discharge.png" alt="Widespread epileptogenic discharge, affecting the EEG due to shared variance via the ear electrodes" width="627" height="841" class="img-responsive atto_image_button_text-bottom"><br></p>
<p style="text-align: center;">Figure : Widespread epileptogenic discharge, affecting the EEG due to shared variance via the ear electrodes<br></p>
    <p style="text-align: center;"><br></p>