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. Author manuscript; available in PMC: 2014 Aug 1.
Published in final edited form as: Eur J Neurosci. 2013 May 28;38(4):2611–2620. doi: 10.1111/ejn.12259

FIG. 3.

FIG. 3

Acute stress produces dendritic retraction in the right basolateral amygdala (BLA), whereas fear conditioning and extinction produces dendritic retraction in the left BLA. (A) Total branch number [mean ± standard error of the mean (SEM)] for right and left BLA pyramidal neurons in unstressed (black bars) vs. stressed (gray bars) rats that were either non-conditioned or underwent fear conditioning and extinction. *P < 0.05 relative to unstressed within the learning condition. †P < 0.05 relative to untested within the stress condition. (B) Total branch length (mean ± SEM) for right and left BLA pyramidal neurons in unstressed (black bars) vs. stressed (gray bars) rats that were either non-conditioned or underwent fear conditioning and extinction. *P < 0.05 relative to unstressed within the learning condition. †P < 0.05 relative to untested within the stress condition. Unstressed, no conditioning, n = 5. Stressed, no conditioning, n = 4. Unstressed, conditioning and extinction, n = 8. Stressed, conditioning and extinction, n = 10.