Figure 2

Dorsal and transversal sections from the brain of another dog with superimposed BOLD-activation and labeling of anatomical structures. The pictures show dorsal (upper row) and transversal (lower row) sections from the brain of one beagle. The position of the caudal colliculi (CC) and the medial geniculate nucleus (MGN) were identified using well-established anatomical literature [25, 26]. The dorsal sections are taken at the level of the MGN and the lower CC and show activation in both CC and in the right MGN. The transversal images show bilateral activation of the CC. No cortical activation can be seen on the chosen sections.