“…Therefore, we will frame our discussion in the context of computational models of neural circuits that have direct implications for understanding the link between the cellular influences of acetylcholine and cognitive performance (Hasselmo et al, 1992, 1995, 2002; Hasselmo and Schnell, 1994; Hasselmo, 1999; Menschik and Finkel, 1999; Norman et al, 2006; Burgess et al, 2007; Hasselmo, 2008). These models include analysis of cholinergic effects on circuit dynamics in the hippocampus (Hasselmo and Schnell, 1994; Hasselmo, 1999; Menschik and Finkel, 1999), models of the functional role of theta rhythm oscillations (Hasselmo et al, 2002; Norman et al, 2006) and models of grid cell firing in entorhinal cortex (Burgess et al, 2007; Hasselmo, 2008). …”