Abstract:Dendritic spines host glutamatergic excitatory synapses and compartmentalize biochemical signalling underlying synaptic plasticity. The narrow spine neck that connects the spine head with its parent dendrite is the crucial structural element of this compartmentalization. Both neck morphology and its molecular composition differentially regulate exchange of molecular signals between the spine and rest of the neuron. Although these spine neck properties themselves show activity-dependent plasticity, it remains u… Show more
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