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. 2019 Feb 13;39(7):1195–1205. doi: 10.1523/JNEUROSCI.2492-18.2018

Figure 4.

Figure 4.

Sharpening and selective strengthening of intracortical excitation during development. A, Onset latencies of CF-evoked excitatory responses after versus before cortical silencing. Each symbol represents one cell. Red line is the unity line. B, CFs of synaptic TRFs after versus before cortical silencing. C, BW20 of total, thalamocortical, and intracortical excitatory input before and after the refinement. Data points for the same cell are connected with lines. n = 7 and 6 cells. No significant difference, one-way ANOVA. D, FWHM for the tuning of total, thalamocortical, and intracortical excitation before and after the refinement. Red symbol represents mean ± SD. n = 7 and 6 cells. *p < 0.05, **p < 0.01, ***p < 0.001, t test. #p < 0.05, ###p < 0.001, one-way repeated ANOVA. E, Ratio of peak amplitude of thalamocortical versus total excitation at the CF and receptive field edges before and after the refinement. n = 7 and 6. ***p < 0.001, t test. #p < 0.05, paired t test. F, Intracortical/thalamocortical ratios for three measures (BW20, FWHM, peak response amplitude evoked by a CF tone) before and after the refinement. *p < 0.05, ***p < 0.001, t test.