Figure 1.
The dipole theory of the neurophonic. A, Schematic of excitatory inputs to principal cells of the MSO. Excitatory inputs largely target the dendrites, and inputs from the two ears are segregated on opposite dendrites. B, The arrangement of excitatory inputs and bipolar morphology suggest that monaural inputs to MSO neurons will act as a current dipole: excitatory currents are sinks and compensatory outward currents are sources. C, An idealized representation of a local subpopulation of MSO neurons. The gray lines indicate isopotential Ve field lines of the dipole-like field that would be generated by a local subpopulation receiving monolateral excitatory input and satisfying the symmetry and synchrony assumptions described in the text.