It is unclear where on the norepinephrine dose-response curve the level of active tone was set.
The contraction responses to norepinephrine increase in some arteries and decrease in others during pregnancy.
Even in humans, blocking norepinephrine reduces the memory enhancing effects of surprise.
Prior exposure to chronic stress results in enhanced synthesis and release of hippocampal norepinephrine in response to a novel stressor.
These overall effects were reversible, as the frequency of oscillation returned to baseline during washout of norepinephrine.
One involves primarily the norepinephrine system projecting from the locus coeruleus to the prefrontal and posterior cortex and hippocampus.
The effect of norepinephrine on blood flow throught the fetal liver and ductus venosus.
However, cyclooxygenase inhibition had no effect on the norepinephrine contraction responses.
