Table 1.

Experimental Design (Basic Protocol)

Group	Conditioning	Extinction	Test
EXT	AT+	BT−	BT−
NO-EXT	AT+	B−	BT−

NOTE: A and B refer to contexts; T = auditory CS; Plus and minus signs indicate footshock or the lack of footshock, respectively; EXT: extinction group, NO-EXT: no-extinction control.