Table 2.

The percentage of cells showing β-gal activity is shown for four undeprived animals

Layer/cortical areaSI (barrel cortex)VIAI
II/III3.2  ± 1.815.4  ± 6.03.35  ± 0.07
IV3.4  ± 1.416.1  ± 3.65.95  ± 3.61
  • Means and SEs are shown for cells counted in layers II/III and IV of the barrel cortex (SI) four animals, visual cortex (VI) four animals, and auditory cortex (AI) four animals. Visual cortex shows higher levels than other sensory cortices, as can also be seen macroscopically (see Figs. 1, 2).