sensory experience can produce structural changes to dendritic spine morphology, and that LTP can induce rapid changes in the size, shape, and number of synapses. Following induction of LTP, new spines form on the dendrite, sometimes forming connections with the same synaptic bouton that triggered their formation. The heads of existing spines grow larger, while their necks become shorter and wider. Spine head volume can increase threefold within one minute of repeated electrical stimulation. All of these changes facilitate the trafficking of receptors into the spine heads, making them more
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