Cre+/^f^{<i>Grin1</i>+} mice show enhanced fear memory consolidation and retention.

<p>(<b>A</b>) Percent freezing during auditory fear conditioning over tone- shock pairings and (<b>B</b>) Cre+/^{f<i>Grin1</i>+} mice shows significantly more freezing during the 1^st six trials of fear extinction (also considered the fear retention test) suggesting an increase in fear memory consolidation. <b>C</b>) Average freezing behavior over the entire fear extinction session averaged into bins of 3 trials shows significantly disrupted fear extinction over the 30 extinction trials (<b>D</b>) during the extinction test conducted the following day Cre+/^{f<i>Grin1</i>+} mice do not show a significant difference from controls.