chapter 13 Flashcards
stress
state of physiological and psychological arousal produced by internal or external stressors that are perceived by the individual as challenging or exceeding their ability or resources to cope
anxiety
state of physiological arousal associated with feelings of apprehension, unease or worry that something is wrong is something unpleasant is about to happen
anxiety disorder
to describe a group of disorders that are characterised by chronic feelings of anxiety, distress, nervousness
phobia
excessive or unreasonable fear directed towards a particular object, situation or event that causes significant distress or interferes with everyday functioning.
3 categories of phobias
- agotaphobia (public/unfamilar places)
- social phobia
- specifc phobia
specific phobia
disorder characterised by significant anxiety provoked by exposure to a specific fear object or situation, often resulting in avoidance behaviour.
phobic stimulus
The ‘object or situation’ they are afraid
5 categories of specific phobias
- animals
- situations (lifts, flying)
- blood, injections and/or injury
- natural environments (thunder, the dark, water
- Other phobias – anything not falling into another category (choking, vomiting, loud noises, costumed characters, dying)
stress response
Exposure to the phobic stimulus triggers an involuntary anxiety response is fight/flight physio changes).
panic attack
(unexpected onset of intense anxiety that can last a few mins tight chest, short breath
anticipatory anxiety
is the gradual rise in anxiety level as a person thinks about, or ‘anticipates’, being exposed to a phobic stimulus in the future.
biological factors
- GABA neurotransmitter dysfunction
- role of stress response
- LTP
GABA
main inhibitor.
the brain to make postsynaptic (‘receiving’) neurons less likely to be activated (i.e. it inhibits excitation or ‘firing’). psychologists have proposed that individuals with a low level of GABA are more vulnerable to anxiety.
stress response
Response to stressor + fight/flight/freeze response= panic attack
LTP
neurologically strengthen the association between a phobic stimulus and a fear or anxiety response through its activity at the synapse.