Final Flashcards
What are the four genetic effects of short depression gene allele?
Depression risk gene variant confers smaller size to amygdala and ACC, and uncoupling of ACC-amygdala communication
Short allele of serotonin transporter gene is less efficient.
Short allele carriers show significantly less functional coupling between amygdala and perigenual anterior cingulate cortex than Long/Long individuals
What is the name of the framework used to analyze body image?
Tripartite Influence Model of Body Image
What are the three aspects of the Tripartite Influence Model of Body Image?
Peers
Parents
Media
What three neural effects were observed from introspective meditation?
Increased insula activity
Decreased mPFC activity during introspection
Decreased communication between mPFC and insula
What brain areas are involved in reducing stress and making relationships rewarding
Limbic system
Nucleus accumbens
Neural impact of childhood neglect in Romanian orphanage
15% less grey matter
Larger relative amygdala size
social exclusion activates what brain region?
dACC
social support has what neural impact?
reduces cortisol reactivity as well as dACC reactivity in cyberball
Behavior effect of child licking in mice
- More exploratory
- More resilient
- Lick own kids
- Less fear response
- Lower stress hormones
what did the switched at birth study show about mice exploration?
- Anxious mice raised by anxious mothers were anxious
- But all mice raised by exploratory mothers were exploratory
What brain structure releases oxytocin?
hypothalamus
What two effects does oxytocin have?
Increased attachment, trust and protective instincts
Decreased stress, pain and drug cravings
What 5 behavioral stimuli release oxytocin?
Breastfeeding Hugs/light caresses Sex When someone shows they trust you Talking
What region of the brain do hypothalamic oxytocin neurons project to?
ventral tegmental area (VTA) where dopamine is produced
Direct infusion of OT into VTA increased dopamine signal in the ____
Direct infusion of OT into VTA increased dopamine signal in the nucleus accumbens