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. 2014 Mar 5;34(10):3779–3792. doi: 10.1523/JNEUROSCI.2954-13.2014

Figure 3.

Figure 3.

The comparison of the time courses of the contralateral and ipsilateral responses. A–D, The representative traces of the EPSCs. The contralateral responses are red, and the ipsilateral responses are black. The amplitudes of the traces are normalized. A, B, Contralateral–ipsilateral matched responses (A, transient; B, buildup). C, D, Contralateral–ipsilateral unmatched responses. E, F, The ratio of the peak time (E) and half-width (F) of contralateral and ipsilateral responses were plotted against the sound level. Gray bars indicate the ratio from 0.5 to 1.5. The data were grouped into four types by the peak time of the contralateral response and ipsilateral/contralateral peak time ratio at 80 dB. At the right, the numbers of the each type of neuron (E) or the numbers of the cells with a ratio of <0.5, 0.5–1.5, or >1.5 (F) are shown. At 80 dB, the peak times of the contra-EPSCs ranged from 15.5 to 403.7 ms (65.5 ± 14.1 ms, n = 34), whereas those of the ipsi-EPSCs ranged from 17.8 to 447.9 ms (93.2 ± 21.3 ms, n = 24). The half-widths of the contra-EPSCs ranged from 2.6 to 186.1 ms (44.6 ± 6.7 ms, n = 34), whereas those of the ipsi-EPSCs ranged from 10.6 to 170.6 ms (54.1 ± 8.9 ms, n = 24). G–J, The representative traces of IPSCs. The contralateral responses are blue, and the ipsilateral responses are black. G, Contralateral–ipsilateral matched responses. H, I, Slower ipsilateral response. J, Slower contralateral response. K, L, The ratio of the peak time (K) and half-width (L) of contralateral and ipsilateral responses were plotted against the sound level. The data were grouped into two types by the peak time of the contralateral response and ipsilateral/contralateral peak time ratio at 80 dB. At 80 dB, the peak times of the contra-IPSCs ranged from 19.9 to 86.0 ms (46.3 ± 3.5 ms, n = 24), whereas those of the ipsi-IPSCs ranged from 17.6 to 180.4 ms (63.5 ± 10.1 ms, n = 19). The half-width of the contra-IPSCs ranged from 18.1 to 262.4 ms (80.5 ± 13.3 ms, n = 24), whereas those of the ipsi-IPSCs ranged from 6.1 to 226.7 ms (74.9 ± 16.9 ms, n = 19).