Effect of Associative Learning on Memory Spine Formation in Mouse Barrel Cortex

Table 1

Statistically significant effects of conditioning and pseudoconditioning on dendritic spines in the barrel cortex.

	Single-synapse spines	Double-synapse spines
Effects after conditioning	Decrease in the number of thin spines	Increase in the number of sER-free and SA-containing spines; Increase in inhibitory PSD area in sER- and SA-containing spines; Increase in the number of polyribosomes in SA-containing spines
Effects after conditioning and pseudoconditioning	Increase in the number of polyribosomes in sER-free spines; Decrease in the number of polyribosomes in sER-containing spines; Increase in the number of mushroom spines; Decrease in the number of stubby spines
Effects after pseudoconditioning only	Increase in the number of sER-free spines	Increase in the number of polyribosomes in sER-free spines