Table 2.

Abridged clinical observations of sleep EEG (where performed, e.g., case id = 4 was not recorded at all, cases 1, 9 only at second measurement).

id	#	age	Sleep EEG
1	2	45	Normal sleep-EEG; When alertness is decreased the rhythmical activity of the back areas is desynchronized and slow wave activity is increased; During sleep sharp K-complexes, vertex-waves and sleep-spindles; the findings made in wake-EEG are not seen here
2	1	24	When the alertness is decreased the rhythmical activity of the back areas is desynchronized and diffuse theta and delta-activity can be seen; During sleep K-complexes, vertex-waves and sleep-spindles; Also left frontal (as compared to right) slow wave discharges (theta-delta, high in amplitude) are potentiated in sleep
3	1	40	Central vertex-potentials and sleep-spindles
	2	51	Abnormal sleep-EEG; Irritable findings are present and even increased during sleep and especially spike-slow wave components are seen spread over convexity
	3	61	Abnormal sleep-EEG; K-complexes; Irritable findings are increased during sleep
5	1	12	K-complexes and sleep-spindles; Occipital delta asymmetry, higher amplitude on the right
6	1	60	Especially during sleep left middle temporal small sharp waves and spikes
7	1	12	Slow-wave activity increase in sleep; During sleep K-complexes, vertex-waves and sleep-spindles
	3	36	During sleep vertex-waves
	4	72	Slow-wave activity increases in sleep; During sleep K-complexes, vertex-waves and sleep-spindles
8	1	81	Abnormal sleep-EEG; Irritable findings are increased in sleep (10 s each, with 10–20 s intervals); A lot of rhythmical delta activity (2.5 Hz) in the right hemisphere
9	2	168	Theta paroxysms and increase in diffuse theta during the decrease in alertness
10	1	63	During sleep left dorso-temporal spikes, vertex-waves and sleep-spindles
11	1	59	During sleep K-complexes, vertex-waves and sleep-spindles; Centro-temporal focal spikes