TABLE 2. EEG Characteristics while not taking Seizure Medications.

This table shows characteristics of EEGs performed without seizure medication. Most of these EEGs were diagnostic EEGs while two were done after a medication wean. The EEG# (column 1) indicates the order of the EEGs, also accounting for EEGs described in Table 3. When reporting about seizures, +SI indicates that the patient was still able to elicit seizures in the sun while “.” indicates that the patient was not brought into sunlight for the EEG. Fragments are unilateral spikes/polyspikes that were felt to be unilateral manifestations of generalized discharges rather than true focal discharges. Patient 12 had two unmedicated EEGs (one at diagnosis and a second after weaning medications).

ID#/EEG#	Age (yr)	Interictal 3–4 Hz Spikes	Interictal Polyspikes/Frontal Fast	Maximum Spike Wave Duration (sec)	Runs >3 Sec (#/hour)	Focal Findings	Seizures Induced in Sun	HV	PPR
2/1	8	+	−	6	~6	−	.	.	+
3/1	9	+	+ Cz	5	43	Fragments	+ SI	.	.
4/1	7.5	+ BF/BP	+ BF	16	10	−	+ SI	.	.
5/1	7.5	+ BF/BP	+ BF	7	13	−	+ SI	.	+
7/3	16	+ BF	+ BF	8	30	−	+ SI	.	.
9/2	5.4	+	−	2	0	−	.	−	−
10/1	12.1	+ BF	+ BF/BP	10	9	Fragments	.	SW	+
11/1	7.4	+	+	5	4	Focal slowing	.	PSW	+
12/1	8.6	+ BF	+ BF/BP	10	15	Fragments	+ SI	.	+
12/3	10.7	−	+ BF/BP	6	7	Fragments	+ SI	.	.
13/1	11.3	+	+	5	Multiple	−	+ SI	S/PSW	+

BF=bifrontal; BP= biposterior; Cz=central; HV=hyperventilation; PPR=photoparoxysmal response; PSW=polyspike waves; Sec = second; SI=self-induced; S/PSW=spike and polyspike waves; SW=spike waves;.=not tested