Physiological differences between histologically defined subdivisions in the mouse auditory thalamus

► We compared subdivisions of medial geniculate body and posterior thalamic nucleus. ► Latencies were shortest in medial subdivision, longest in dorsal subdivision. ► Response probability was highest in medial and ventral subdivisions. ► Some ventral subdivison and posterior thalamic neurons showed late “rebound” firing. ► Results support tripartite organisation of ascending auditory pathways.