Chapter 13 Stress and Mental Health Flashcards
Stressor
any person, object, situation or event that produces stress.
Stress
a 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
Biological factors in biopsychosocial framework
fight/flight response
HPA axis
allostasis
Physiological factors in biopsychosocial framework
Transactional model of stress & coping
Biofeedback
Coping strategies
Social factors in biopsychosocial framework
Life events
Culture
Environmental influences
Stress response
(reaction) involves the physiological (bodily) and psychological (mental) changes people experience when they are confronted by a stressor.
Levels of stress response
Mild (thrilling, challenging, motivating = leads to increased performance in simple and complex tasks)
Acute (suddenly producing a high level of arousal over a period of time)
Chronic (high level of arousal that persist over a long period of time and results in a number of physiological and psychological responses which maybe short term or long lasting
Fight or flight response
an involuntary reaction resulting in a state of physiological readiness to deal with a sudden and immediate threat by either ‘confronting it (fight) or running away to safety’ (flight)
Two hormones released by adrenal glands in fight or flight
Sympathetic
adrenaline (also called epinephrenine)
Parasympathetic
noradrenaline (also called norepinephrine)
Hormones released by adrenal glands during HPA axis
Cortisol-a hormone that increases the metabolism (concentrating glucose) to increase the ‘fuel’ available to the muscles
What happens if chronic stress is prolonged on the fight or flight response
The HPA axis is activated and takes over (adrenaline and noradrenaline’s effects don’t last long enough)
What does HPA stand for?
hypothalamic- pituitary-adrenocortical axis
Process of the fight or flight response
1-When a stressor or threat is identified, the hypothalamus in your brain is activated
1.5-The hypothalamus is responsible for certain metabolic (cell sustaining) processes and other activities of the ANS -autonomic nervous system (lower brain structure). This is where the HPA is activated & is responsible for organising your response.
2-This then activates the pituitary gland - up until now this is all neurochemical (ie within the brain!)
3-The activated pituitary gland then releases the hormone ACTH (adrenocprticotropic)
4-ACTH then travels through the blood steam to the adrenal cortex ( the adrenal gland outer layer) where “stress hormones” corticosteriods – commonly cortisol is secreted providing extra energy by increasing blood sugars
5-Next is the adrenal glands (located above the kidneys), were adrenaline & noradrenaline are released
What is the two process’ side by side (HPA & Fight or flight)
Stressor
⬇
Brain
⬇
Hypothalamus
⬇ ⬇
Sympathetic NS Pituitary gland
⬇ ⬇
Adrenal gland Adrenal cortex
⬇ ⬇
Adrenaline and noradrenaline Cortisol
⬇ ⬇
Stress response
️
Prolonged chronic stress response leads to…
Responses such as dizziness, aches, muscle tension, heart palpitations, rash, fatigue
Cold and flu and digestive disorders (stomach ulcers)
Cortisol and noradrenaline in high concentrations for prolonged time can effect immune function
More serious physio health problems: diabetes, Cardiovascular disease, immunosuppression (decreased efficiency of immune function)
Serious psych problems have been linked to high prolonged levels of cortisal: mental disorders (depression, PTSD & other anxiety disorders)
Eustress
positive psychological response to a stressor eg. Feeling excited, active and alert. It is usually a short -term type of stress
Destress
negative psychological response to a stressor eg anger, anxiety, nervousness or tension. This can be both short and long term
What are the three categories of psychological stress
Behavioural
Emotional
Cognitive
What is behavioural psychological stress
apparent in how a person looks - shaky voice, hand tremors, jumpiness, muscle stiffness, strained face, decreased sleeping or increased eating may also occur. People may leave their jobs, use alcohol or avoid their stressor
What is cognitive psychological stress
apparent in changes in a persons ability to learn & think – perception distorted, difficulty concentrating, making decisions, forgetful etc.
What is emotional psychological stress
apparent in how a person feels – anxious, tense, depressed angry, feeling hopeless. There is often negative attitudes towards themselves, their work or school
What are the psychological determiners of stress
Attitudes Motivation Level of self esteem Coping skills Our perception of how much control we have
What is the transactional model of stress and coping
Lazarus’ and Folkman’s model that:
proposes that stress involves an encounter (transaction) between an individual and their environment – stress response depends on the individuals interpretation (appraisal) of the stress and their judgment of their ability to cope with it.
Lazarus prosed that stress is not the result of the individual alone or the environment alone -> rather the environment can influence the individual AND the individual can influence the environment.