Type I spiral ganglion neurons (I-SGNs) of the mammalian cochlea convey all acoustic
information from the sensory hair cells to second order neurons in the brainstem. Despite
evidence supporting physiological diversity of I-SGNs and of its importance for encoding the
various features of sounds, knowledge of their molecular diversity is only emerging. In this
review, we outline the recent efforts in the identification of mammalian I-SGN types and
summarize how genetic and anatomical features of each individual neuron type relate to …