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. 2016 Sep 5;10:71. doi: 10.3389/fncir.2016.00071

Figure 3.

Figure 3

Recent empirical evidence for Hebbian and homeostatic plasticity mechanisms mediated by spontaneous activity. The KbDb−/− knockout (Lee et al., 2014) shows lack of LTD and altered retinogeniculate projections, in which many weak projections connect the retina to the LGN. In the auditory system, the MNTB-LSO projection in the α9 subunit knockout (Clause et al., 2014) shows both functional and anatomical consequences of altered cochlear spontaneous activity, occurring at different postnatal ages. LGN, Lateral geniculate nucleus; RGC, retinal ganglion cell; WT, wild-type; MNTB, medial nucleus of the trapezoid body; LSO, lateral superior olive; P3, postnatal day 3.