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. 2013 Oct 30;7:174. doi: 10.3389/fncir.2013.00174

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Copyright © 2013 Grimsley, Sanchez and Sivaramakrishnan.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Monosynaptic excitation and inhibition in intensity-tuned neurons. (A) Spike rasters in control (top); HiDi (middle); HiDi + Gz + strychnine (bottom). (B) RIFs for the three neurons. Left: the cell in (A); middle, right: two other cells. (C) Normalized RIF_M, RIF_M(E), and Gain_M(I) for the three cells in (B). Gain_M(I) changes the direction of its gain control with sound intensity. Hatched region: Gain_M(I) exhibits a “tuned” gain. (D) Left: linear fits (black lines) of the rising and falling limbs of RIF_M(E) and RIF_M for Neuron 1 in (B). Rising limb: RIF_M, r² = 0.90285; slope, 4.12821 spikes/s/dB SPL; RIF_M(E); r² = 0.92772; slope, 8.2253; falling limb: RIF_M, r² = 0.88935; slope, -3.30769; RIF_M(E), r² = 0.98401; slope, -6.3333. Right: population averages of tuned widths. Tuned widths were measured at half the peak height of normalized functions. 14 cells. Mean and SEM.