Spatial organization of receptive fields in the auditory midbrain of awake mouse

▶The tonotopic progression is discontinuous in mouse inferior colliculus (IC). ▶There is no clear spatial organization of frequency tuning curve types throughout the awake mouse IC. ▶There is heterogeneity of receptive fields in the bulk of the IC such that frequency tuning characteristics and hence the structure of excitatory and inhibitory inputs does not depend on location in the IC.