nervous system
• protein levels of Rap1 are reduced by 89.4% in the cortex and 38.7% in the thalamus
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• synaptic efficacy in cortical but not thalamic input to the lateral amygdale is 2.5-fold higher than in wild-type mice
• current-voltage relationships for AMPAR and NMDAR currents are similar to wild-type mice
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• in the cortico-amygdala pathway, spike-timing-dependent LTP was substantially reduced with only 2 of 7 cells showing a LTP response compared to 8 of 11 cells from wild-type
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• EPSC evoked by minimal stimulation of cortical inputs into the lateral amygdale reveals increased release of glutamate
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• mice do not demonstrate PPF in cortical inputs to the lateral amygdale before or after long-term potentiation
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behavior/neurological
• mice have reduced fear learning as measured by freezing to a conditioned stimulus both 3 hours and 48 hours after training with a moderately adversive unconditioned stimulus
• there is no difference in fear learning compared to wild-type mice when a more severe unconditioned stimulus is used in training
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