. 2007 Jun 22;8:43. doi: 10.1186/1471-2202-8-43

Table 1.

Pearson correlation coefficients (R) for protein expression of NMDA receptor subunits in crude synaptosomes and learning performance.

	Place trial average		Learning index score

Proteins	Prefrontal/Frontal Cortex	Hippocampus	Prefrontal/Frontal Cortex	Hippocampus
ζ1	-.728 **	+.188	-.658 **	+.017
ε1	-.286	+.509	-.334	+.484
ε2	-.594 *	+.306	-.664 **	+.0003
syntaxin	-.298	+.442	-.440	+.202

* p < .05; ** p < .01; Correlations include individual mice from both age groups. N = 14 (8 young & 6 old) for Prefrontal/frontal cortex; N = 12 (6 young & 6 old) for Hippocampus.