Table 1.

Mapping of trigger values and annotated events.

Trigger value	Annotation	Notes	Number of trials
1	Standard 1	First stimulation	~200
2	Standard 2	Second stimulation	~200
3	Standard 3	Third stimulation	~200
4	Standard 4	Fourth stimulation	~135
5	Standard 5	Fifth stimulation	~66
13	Omission 4	Omission following third stimulation	~66
14	Omission 5	Omission following fourth stimulation	~66
15	Omission 6	Omission following fifth stimulation	~66
21	Non-Stimulation	Absence of stimulation outside the rhythmic stimulation sequences	~130