Anxiety
mood, negative affect, tension, anticipates future danger/misfortune
Is anxiety good?
yes, in moderation
physical & intellectual performances driven & enhanced by anxiety
Fear
immediate alarm rxn to danger/life-threatening emergencies
what is the difference b/w fear & anxiety?
fear deals with current stressors, anxiety occurs b/c cannot predict future
Panic
sudden overwhelming fright/terror
Panic Attack
abrupt intense fear/discomfort w/ physical symptoms (ie. dizziness/heart palpitations)
2 types of panic attacks
What are the genetic contributions to anxiety?
no single gene cause anxiety/panic/disorder BUT collection of genes makes vulnerable when stress/environment turn on/off certain genes
What specific brain circuits are anxiety associated with?
*corticotropin-releasing factor (CRF) central to anxiety & depression
How does corticotropin-releasing factor (CRF) system relate to anxiety?
CRF activates HPA axis (part of CRF system) = effects on limbic system - hippocampus & amygdala & locus coeruleus (brain stem) & prefrontal cortex & dopaminergic neurotransmitter system
directly related to GABA-benzodiazepine & serotonergic & noradrenergic neurotransmitter systems
which area of brain is most associated w/ anxiety?
limbic system - mediator b/w brain stem & cortex
behavioural inhibition system (BIS) - Jeffery Gray
brain circuit in limbic system that responds to threat signals by inhibiting activity & causing anxiety
Fight/Flight System (FFS)
brain circuit in animals that when stimulated = immediate alarm & escape response resembling human panic
How does smoking relate to stress?
What are 4 psychological contributions to anxiety?
Social Contributions to anxiety
stressful life events (ie. marriage, divorce, death, physical injury)
trigger physical & emotional reactions (run in family - genetic contribution)
Triple Vulnerability Theory
*if all 3 = inc risk for anxiety disorder after stressful situation
generalized biological vulnerability (Triple Vulnerability Theory)
tendency to be uptight might be inherited BUT not sufficient to produce anxiety itself
generalized psychological vulnerability (Triple Vulnerability Theory)
grow up believe world is dangerous & not able to cope b/c early experience
specific psychological vulnerability (Triple Vulnerability Theory)
learn from early experience (ie. taught by parents some situation/object = dangerous)
ie. parents fear dog -> express anxiety -> you fear dog
What % of Canadians 12+ had diagnosed anxiety disorder? (CCHS)
8.6%
Comorbidity
co-occurrance of 2+ disorders in 1 individual
What % of Canadians 18+ have a comorbidity among anxiety & depression?
31%
presence of anxiety disorder is uniquely & significantly associated with…
thyroid disease, respiratory disease, gastrointestinal disease, arthritis, migraine headaches, allergic conditions