Fig. 5.

Schematic representation of the GABAergic terminal-PC synaptic remodeling after a block of the electrical activity. (Upper) In the vehicle-treated cerebella, GABAergic terminals contact the dendritic shaft forming symmetric synapses expressing the GABA receptors (green). (Lower) After TTX infusion, the terminals increase in size and present ectopic contacts on spines. In addition, the synapses on the dendritic shaft may be symmetrical, but also totally or in part asymmetrical. Glutamate receptors (red) are expressed by both spines and asymmetrical shaft synapses; GABA_A receptors are downregulated in the shaft synapses and appear in the spines.