Their report indicates that these researchers never learned to differentiate between epigenetic effects on RNA-mediated cell type differentiation compared to the experience-dependent affects on behavior of amino acid substitutions. Experience Affects Critical Period Plasticity in the Visual Cortex through an Epigenetic Regulation of Histone Post-Translational Modifications Excerpt: We show that the early exposure of rat pups to enriching environmental conditions accelerates the critical period for plasticity in the primary visual cortex, linking this effect to increased histone acetylation, specifically at…