chapter 5: anxiety, OCD, stress-related disorders Flashcards
define anxiety
future oriented emotion (feeling tension, dread, or apprehension) for something to come
define fear
present emotion from a response to danger or perceived threat
what are our physiological changes experienced in the body due to “fight or flight”
two systems controlled by the hypothalamus
1. ANS (SANS specifically)
2. adrenal-cortical system
what does the stimulation from the hypothalamus on the SANS cause this system to do ?
acts on smooth muscle and internal organs to produce bodily changes (inhibit digestion, accelerate heart beat, etc)
from the stimulation of the hypothalamus how does the adrenal- cortical system respond?
releasing hormones like CRF -> pituitary (which releases ACTH) -> andrenal glands and causes many hormones to be released like epinephrine and norepinephrine
what is the body’s major stress hormone
adrenocorticotropic hormone (ACTH)
what brain structure turns off the “fight or flight” cascade
hippocampus (also responsible for regulating emotions)
what happens to the “fight or flight” response in those we discuss during this chapter?
typically becomes dysregulated
what are some of the feelings of anxiety associated with the disorders discussed in this chapter?
- some disorders involve anxiety that is more specific and acute to certain objects, thoughts, or situations
- or just a more generalized level of anxiety
Define a panic attack
Short and intense period of physical experiences like heart palpitations, shortness of breath, dizziness, intense dread, etc. but is a psychological event
Do panic attacks always have
a specific trigger
No
What percentage of adults experience occasional panic attacks
28%
What is the definition of panic disorder?
When panic attacks become problematic - common occurrence , not usually provoked by any particular situation ( are unexpected) and begin to change behavior because of them
what are some biological factors of Panic disorder?
- along with generalized anxiety disorder, has a high lifetime prevalence
- family component - 43-48% of family history and twin studies suggest heritability (we dont know a specific gene for cause)
- dysfunction of flight or flight response - poor regulation of several neurotransmitters (norepinephrine, serotonin, GABA, and CCK
what are some biological factors for how panic attacks can be triggered?
hyperventilating, inhaling carbon dioxide, caffeine, breathe in paper bad, or taking sodium lactate - these initiate physiological responses of fight-or-flight
what are some brain structure differences between individuals with panic disorder, and those who do not?
- difference in limbic system (stress response) like amygdala, hypothalamus, and hippocampus
differences in what in the brain help explain development of symptoms associated with panic disorder
somatosensory cortex and thalamus - these areas relate to how people interpret sensations within body
what is the locus ceruleus
area of the brain stem and associated dysfunction of norepinephrine has been linked with panic disorder. it has well define pathways with limbic system. this can cause a panic attack which notify’s limbic system of stress and just continues cycle
why can women experience more severe anxiety symptoms
progesterone (usually PMS and postpartum) can affect both serotonin and GABA neurotransmitter systems. increased progesterone can induce mild chronic hyperventilation and in some women this is enough for a panic attack.
what are some psychological factors associated with cognitive theories around panic disorder
pay very close attention to bodily sensations, misinterpret body sensations in negative way, engage in snowball catastrophic thinking making symptoms worse
define anxiety sensitivity
unfounded belief bodily symptoms have harmful consequences - makes people with this more likely to have panic disorder, and have more frequent panic attacks
define interoceptive awareness
heightened awareness of bodily cues - these have usually occurred at the beginning of previous panic attack
interoceptive conditioning
bodily cues from interoceptive awareness become conditioned stimuli of new attacks
what are some of the most known cognitive factors that contribute to panic disorder
biased thoughts, anxiety sensitivity, high interoceptive awareness, interoceptive conditioning (learning), and beliefs about controllability