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. 2004 Jan 14;24(2):547–553. doi: 10.1523/JNEUROSCI.4653-03.2004

Figure 3.


Figure 3.

Insertion of an unexpected 1 hr extended delay between training and test phases of the delayed SWSh is associated with a smaller increase in DA efflux in the mPFC and an increase in errors. Changes in DA efflux during (1) baseline (when rats were confined to the center of the maze), (2) the training phase (Trn), (3) a 60 min delay period (when the rats were again confined to the center of the maze), and (4) in the recall test phase (Tst), throughout a delayed SWSh trial with food available during both the training and test phases. Circles represent percent change in basal DA extracellular levels in the PFC, and bars represent total number of choices required to retrieve the four food reward pellets during each phase, on the day before (white bars) and the microdialysis test day (black bar). Dashed lines highlight the period when rats would normally be allowed to explore the maze during the test phase (No Tst). Stars and double stars denote significance at p < 0.05, 0.01 versus baseline (white circle), and asterisk denotes significance at p < 0.05 versus day before.