The same inhibition was found when the extracted glycosides amygdalic
acid, mandelic acid [beta]-D-glucopyranoside, benzyl [beta]-gentiobioside or benzyl [beta]-D-glucopyranoside were applied.
levels of dopamine and serotonin rise upon exposure to conditioned fear stress without elevation of glutamate.
A gender difference was also observed, with men responding more aggressively to unfair suggestions than women by showing a correspondingly higher rate of amygdalic
For example, O'Connor (2005) reports on recent research that used functional magnetic brain imaging of bereaved individuals and found that prolonged or complicated bereavement is associated with changes in the cortex of the brain and to increased activity in the amygdala, with resolution of grieving correlated with return of amygdalic
activity to normal levels.
Our own brains implement this strategy (as 'fear-learning') through an approximate-but-fast amygdalic
bypass to the detailed-but-slow cortical processing (LeDoux, 1992).