PMC8353336_01
Electroencephalographic (EEG) samples of OIRDA and associated epileptiform discharges (in dashed circles and square). (A) A 5-year old boy (case #1) with unilateral (O1) 3 Hz OIRDA concurrent with ipsilateral C3 spikes during wakefulness. At times, a notched morphology is appreciated within the OIRDA (arrow). There are also sleep potentiated O1 and C4 spikes in this patient (B). (C) A 7-year old girl (case #2) demonstrates bilateral 3 Hz OIRDA with concurrent bi-hemispheric centro-temporal spikes/sharps during wakefulness. At times, the OIRDA displays a notched morphology (arrow). This patient has also bilateral occipital yet O1 predominant spike-slow wave discharges (shown in dashed square in D). (E) A 4.5-year old boy (case #3) with a diagnosis of Panayiotopoulos syndrome has bilateral occipital yet O1 predominant spike-slow wave complex, as well as 2.5 Hz OIRDA more prominent in O1 than in O2 (F), which also exhibit a notched morphology at times (arrow). All EEG tracings are displayed in AP bipolar montages, except D in average referential montage. Setting: LFF 1 Hz; HFF 70 Hz; Notch 60 Hz; sensitivity 10 uV/mm in A-B, 15 uV/mm in C and F, 20 uV/mm in D and E; time base 30 mm/sec.
gr1.jpg
PMC8353336_03_gr1.jpg
f0005
In addition, there was 2.5 Hz, medium amplitude (120-150 uV), also left more prominent than right, OIRDA during wakefulness, often not associated with hyperventilation (Fig. 1E-F, Table 1).
PMC8353336_02
Electroencephalographic (EEG) samples of OIRDA and associated epileptiform discharges (in dashed circles and square). (A) A 5-year old boy (case #1) with unilateral (O1) 3 Hz OIRDA concurrent with ipsilateral C3 spikes during wakefulness. At times, a notched morphology is appreciated within the OIRDA (arrow). There are also sleep potentiated O1 and C4 spikes in this patient (B). (C) A 7-year old girl (case #2) demonstrates bilateral 3 Hz OIRDA with concurrent bi-hemispheric centro-temporal spikes/sharps during wakefulness. At times, the OIRDA displays a notched morphology (arrow). This patient has also bilateral occipital yet O1 predominant spike-slow wave discharges (shown in dashed square in D). (E) A 4.5-year old boy (case #3) with a diagnosis of Panayiotopoulos syndrome has bilateral occipital yet O1 predominant spike-slow wave complex, as well as 2.5 Hz OIRDA more prominent in O1 than in O2 (F), which also exhibit a notched morphology at times (arrow). All EEG tracings are displayed in AP bipolar montages, except D in average referential montage. Setting: LFF 1 Hz; HFF 70 Hz; Notch 60 Hz; sensitivity 10 uV/mm in A-B, 15 uV/mm in C and F, 20 uV/mm in D and E; time base 30 mm/sec.
gr1.jpg
PMC8353336_03_gr1.jpg
f0005
In addition, there was 2.5 Hz, medium amplitude (120-150 uV), also left more prominent than right, OIRDA during wakefulness, often not associated with hyperventilation (Fig. 1E-F, Table 1).
PMC8353336_03
Electroencephalographic (EEG) samples of OIRDA and associated epileptiform discharges (in dashed circles and square). (A) A 5-year old boy (case #1) with unilateral (O1) 3 Hz OIRDA concurrent with ipsilateral C3 spikes during wakefulness. At times, a notched morphology is appreciated within the OIRDA (arrow). There are also sleep potentiated O1 and C4 spikes in this patient (B). (C) A 7-year old girl (case #2) demonstrates bilateral 3 Hz OIRDA with concurrent bi-hemispheric centro-temporal spikes/sharps during wakefulness. At times, the OIRDA displays a notched morphology (arrow). This patient has also bilateral occipital yet O1 predominant spike-slow wave discharges (shown in dashed square in D). (E) A 4.5-year old boy (case #3) with a diagnosis of Panayiotopoulos syndrome has bilateral occipital yet O1 predominant spike-slow wave complex, as well as 2.5 Hz OIRDA more prominent in O1 than in O2 (F), which also exhibit a notched morphology at times (arrow). All EEG tracings are displayed in AP bipolar montages, except D in average referential montage. Setting: LFF 1 Hz; HFF 70 Hz; Notch 60 Hz; sensitivity 10 uV/mm in A-B, 15 uV/mm in C and F, 20 uV/mm in D and E; time base 30 mm/sec.
gr1.jpg
PMC8353336_03_gr1.jpg
f0005
In addition, there was 2.5 Hz, medium amplitude (120-150 uV), also left more prominent than right, OIRDA during wakefulness, often not associated with hyperventilation (Fig. 1E-F, Table 1).