197264.fig.004a
(a)
197264.fig.004b
(b)
197264.fig.004c
(c)
197264.fig.004d
(d)
Figure 4: Sample micrographs of Zif268 immunoreactivity in the primary visual cortex (V1). There are a high number of Zif268 protein-positive neurons in V1 in conditions (a), AVE (b), and (c), but not in condition AVN (d). This observation implies that V1 neurons in the animals that were preexposed to audiovisual stimuli were recruited by both auditory and visual stimuli. The scale bar in (d) represents 50 μm.