wk 5 BB Flashcards
¨ In the brain, noradrenaline primarily released from
Locus Coeruleus
As a neurotransmitter, ________
can enhance formation
and retrieval of memory
noradrenaline
Metabolic imprinting”
¨ Pregnancy during famine
¤ Fetus ‘learns’ that food is scarce
¤ Metabolism of fetus has permanent shift
Which brain areas are involved in regulating the
stress response? What happens to the activity of brain regions in response to these conditions?
¤ Examine clinical cases of poor emotion regulation
n Post-traumatic stress disorder
n Social Anxiety Disorder
n Specific phobia
¤ Etkin & Wager, 2007 – meta-analysis of fMRI studies
across these conditions
patients showed either
¤ Increased activation in amygdala (phobia/ social
anxiety)
¤ Decreased activity in medial prefrontal cortex (PTSD)
¨ ‘Bottom-up’ signalling from the __________indicates
threats in the environment
Amygdala
top-down’ regulation
from the_____ _______-________ ______ prevents
this from triggering constant
stress-responses
medial
pre-frontal cortex
Information encoded during stressful events is
generally _____remembered (e.g. Nice attacks france)
¨ Particularly if information is relevant to stressor
¤ (i.e. learn to avoid house, after attack by dog).
¨ Normally adaptive BUT dysregulation could result in
psychological trauma
¤ E.g. post-traumatic stress disorder, characterised by
flashbacks.
n Feeling that traumatic event is recurring
well
Memory retrieval during
stress is _______
¤ E.g. Guez et al., 2016
impaired
Stress ____________consolidation
of emotional pictures
enhances
Some people are better able to cope with stressful
events than others
Lazarus, 1991 - Depends on our cognitive appraisal of
the situation:
¤ Two main factors
Primary appraisals: how relevant is this situation to my needs?
Secondary appraisals: What resources and options do i have for coping with this event. e.g: should I blame someone else?
¨ Types of conflict - Lewin, 1935
Appraoch-Approach conflict (least stressful)= Should I go to dinner with friends or go out with girlfriend?
Avoidance-Avoidance conflict= do your homework or go to bed without dinner
Approach-avoidance conflict (most stressful)= should i propose (fear of rejection)
Early in year (and for the longest part of the year),
n procrastinators = _______stress, lower marks
(but changed over time)
lower
Submissiveness_____________ ______________ stressors (i.e. lower
conflict) Whiteman, 1997
¤ Longitudinal study of 1500 people – high submissiveness,
_________heart disease
protective against
lower
Why do some people seek to be stressed?
¨ Risky event
¤ Innervation of sympathetic branch of autonomic nervous
system
n Release of adrenaline/epinephrine within 15 seconds
¤ Release of dopamine
n Greatest release, just prior to event
Dopamine neurons show
biggest response not when the monkey receives reward
¤ Instead, at the sound of bell
n “I know that bell, IF I press the lever THEN I’ll get food. This’ll be
great!”
n Dopamine release from _____________of reward.
ANTICIPATION