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. 2013 Jun 5;110(5):1087–1096. doi: 10.1152/jn.00230.2013

Fig. 5.

Fig. 5.

Development of UVF representations. A: representative cortical maps of developing animals. Each x indicates an unresponsive site; scale bar: 1 mm. B: average percentage of AI area representing different frequencies in 0.5-octave bins. Cortical representations of frequencies >45 kHz were significantly larger in older (n = 4; ages: P21, P22, P24, and P26) than younger animals (n = 4; ages: P15, P17, P19, and P20). t-Tests: *P < 0.05; **P < 0.01; ***P < 0.001. C: response latency is longer in younger animals. A 2-way ANOVA reveals a significant effect for age [F(1,26) = 85.7, P < 0.00001] but not for frequency bin [F(4,26) = 1.29, P = 0.30] and no significant interaction [F(4,26) = 0.55, P = 0.70]. Response latency is significantly different for all testable frequencies (P < 0.01 for the 4 highest bins).