View source for GPD (Generalized periodic discharges)

* Any pattern of generalized synchronous, repetitive discharges of similar morphology
* Relative symmetric 
* Periodic, so with interdischarge interval recurring at nearly regular intervals.
** A pattern can qualify as periodic as long as it continues for at least 6 cycles
* Frontal- or occipital-dominant.
* If a more ictal appearance it can be categorized as GPD+:<ref>ACNS STANDARDIZED ICU EEG NOMENCLATURE v. 2012</ref>
**'''+F''': superimposed fast activity. 
**'''+R''': superimposed rhythmic or quasi-rhythmic activity. 
**'''+FR''': superimposed fast activity and rhythmic or quasi-rhythmic activity.

*Not to be confused with intermittent rhythmic delta activity (IRDA)
**[[TIRDA (temporal intermittent rhythmic delta activity)]]
**[[OIRDA (occipital intermittent rhythmic delta activity)]]
**[[FIRDA (frontal intermittent rhythmic delta activity)]]

*Not to be confused with lateralized of bilateral independent periodic discharges:
**[[LPD (lateralized periodic discharges)]]
**[[BI-LPD (Bilateral independent lateralized periodic discharges)]] 


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'''''GPD’s in a 85 years old male after a out of hospital cardiac arrest (source), the discharges are symmetric, similar morphology with the same interdischarge intervals'''''
[[File:GPD_in_a_85_years_old_male_after_a_out_of_hospital_cardiac_arrest.png|border|1200px]]
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'''Notes'''
<references/>