Figure 1.

Four brain regions implicated in FM‐tone discrimination learning were analyzed. The rodent auditory cortex (AC) was shown to be critical for FMTD learning (Ohl et al. 1999). The AC is connected with a number of cortical and subcortical structures (Budinger and Scheich 2009), including strong efferent fibers toward the striatum (STR) and the entorhinal cortex, which feeds directly to the hippocampus (HIP). The connection between AC and the frontal cortex (FC) is reciprocal. The projection from AC to the STR is differentially modulated by FMTD learning (Schulz et al. 2016). Strengths of connections are roughly indicated by the thickness of arrows.