Fig. 1

IC tonotopy in A saline-exposed rats, and B VPA-exposed rats. Each vertical column indicates the recording sites obtained in a single rat. Color indicates the characteristic frequency of each recording site. Filled black rectangles indicate recording sites without a clear characteristic frequency. The vertical distance between each recording site was 200 microns, and the horizontal distance between each recording site was 250 microns. Sites outlined in thick black lines were identified as other IC areas or were poorly tuned, and these sites were excluded from the analysis. Numbers beneath each column indicate the R value obtained between the recording location and the characteristic frequency, in octaves