Table 1.
Discrimination | Odor Pair | Medium Pair |
---|---|---|
Simple discrimination | cumin/cinnamon | bedding |
Compound discrimination | cumin/cinnamon | cedar shavings/boxo |
Reversal 1 | cumin/cinnamon | cedar shavings/boxo |
Intra-dimensional shift | thyme/cloves | fine shavings/paperchips |
Reversal 2 | thyme/cloves | fine shavings/paperchips |
Extra-dimensional shift | oregano/paprika | Cat litter/ground cat litter |
Reversal 3 | oregano/paprika | Cat litter/ground cat litter |
The table shows a possible order of exposure to the exemplar, where the rat must shift its attention from odor to digging medium at the extra-dimensional shift acquisition. The rewarded exemplar is indicated by the underlined words. Presented with either of the two exemplars from the irrelevant dimension, so that during each trial within a discrimination, all four exemplars are present. Rats were counterbalanced so that 50% underwent odor to medium shift.