Table 1.

Description of contexts used for Pavlovian conditioning with context discrimination

Modality	Context 1	Context 2
Visual	Black cardboard-covered sides	No covers (clear acrylic)
	Brown paper in waste pan	White paper in waste pan
Tactile	Acrylic glass floor	Wire grid floor
Olfactorya	10% lemon oil	10% almond odor (benzaldehyde)

^aSprayed onto a clear petri dish located in the waste pan beneath the chamber floor