Table 1.

Main effects of the independent variables.

Effect	SCR	Na	P1	N1a	N1b	N1c	P2	P3a	P3b	nP3	SW1	SW2
Significance	↑	–	–	~ ↑	†	↓	↑	–	↑	~ ↓	†	–
ISI	↑	–	–	–		~	~ †	–	↑	↑	↓	↓
Decrement	✓							–	✓	✓	–	–
Recovery	✓							–	–	✓	–	–
Dishabituation	✓							–	–	–	–	–

↑Increase; –no effect; ↓Decrease; †interaction; ~ approached significance; ✓observed; Empty cells not tested.