Figure 1.
Schematic diagram showing the four different trial types in the cross-modal object recognition task. Left images in each pair show the sample phase, while right images show the test phase. The different symbols represent different objects. In any light-phase condition, lights were turned on and barriers were placed between the rat and the object to prevent tactile exploration; during dark phases these barriers were removed but the lights were turned off. Light–light and dark–dark trials do not require a cross-modal switch, while dark–light and light–dark trials do.
