Flores anxiety Flashcards
Prevalence decreases with increased socioeconomic status
anxiety disorders
3 major neurotransmitters associated with anxiety disorders (which ones increase and which ones decrease)
(increase) noraderanaline,
(increase) serotonin
(decrease) GABA
what drugs increase noraderenaline and provoke frequent severe panic attacks?
beta adrenergic receptor agonists –> isoproterenol
alpha 2 adrenergic receptor antagonists –> yohibine
(Clonidine –> alpha 2 adrenergic receptor agonist so reduces anxiety)
acute stress causes an increase in serotonin in what areas of brain
prefrontal cortex, nucleus accumbens, amygdala, lateral hypothalamus
what drugs increase serotonin effects causing anxiety
McPP and fenfluaramine
also hallucinogens and stimulants like LSD and MDMA are associated with development of anxiety
what drug enhances the efficacy of GABA decreasing anxiety
benzos
at type A receptor
in the fear network : Viscerosensory info is conveyed to the ________ by the _____ and the ______
amygdala by the thalamus and primary viscerosensory cortices
In the fear network: contextual info is stored in the ________ and conveyed directly to the ______
hippocampus to the amygdala
Efferent pathways of amygdala relevant to anxiety , What brain regions causes:
physio and behavior arousal
locus cereleus by increasing NA
Efferent pathways of amygdala relevant to anxiety , What brain regions causes:
defensive behavior and postural freezing
periaqueductal gray regions
Efferent pathways of amygdala relevant to anxiety , What brain regions causes:
Activation of pHA (i think HPA), releasing adrenocorticoids
hypothalmic paraventricular nucleus
Efferent pathways of amygdala relevant to anxiety , What brain regions causes:
activation of sympathetic nerv system
lateral hypothalamic nucleus
Efferent pathways of amygdala relevant to anxiety , What brain regions causes:
influences in resp. rate and timing
parabrachial nucleus
the HPA axis physiological stress increases synthesis and release of ____
cortisol
what is the role of cortisol in stress
mobilizes and replenishes energy stores and contributes to increased arousal, vigilance, focused attn, and memory formation