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. 2006 Oct 18;26(42):10667–10676. doi: 10.1523/JNEUROSCI.3253-06.2006

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Copyright © 2006 Society for Neuroscience 0270-6474/06/2610667-10$15.00/0

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Figure 4. — Modifications of single-unit RFs between two time points of nursing. A, B, Examples of multiunit (broken outlines) and single-unit (thin outlines) RFs recorded within layer IV at 11 and 21 d postpartum in the same nursing rat. The single-unit RFs of all neurons sampled in individual microelectrode penetrations displayed some variations in size and shape but overlapped to some extent. They appeared, in almost all instances, to be completely contained within the multiunit RF recorded in the corresponding penetration but displayed some variation in the locations of their centers. C, RFs normalized relative to the ventrum skin surface. D, Single-unit RFs normalized relative to the area of their corresponding multiunit RF. *Statistically significant differences (Wilcoxon's test, p < 0.002).