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. 2004 Apr 14;24(15):3810–3815. doi: 10.1523/JNEUROSCI.4100-03.2004

Figure 4.

Figure 4.

Remote and recent tone fear. Tone tests were conducted by placing the rats in a novel context for a 2 min baseline period (BL), followed by a 6 min continuous tone presentation. A, Remote tone fear. Both sham- and BLA-lesioned rats displayed low levels of freezing during the 2 min baseline period. Whereas sham rats displayed high levels of fear during the tone presentation, BLA rats showed pronounced deficits across the test. B, Recent tone fear. Baseline freezing in sham- and BLA-lesioned rats was negligible. Sham rats displayed high levels of freezing across the tone test, and BLA rats again showed significant freezing deficits.