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PSYC23H3 (122)
David Haley (105)
Lecture 4

Lecture 4 02-02-12.docx

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University of Toronto Scarborough
David Haley

PSYC23H3SLecture 4 020212 Oxytocin and tending Prairie voles were bonding and had long lasting relationships whereas the montane voles had multiple and different relationships The question of how that affects care giving behaviour is interesting Theres link between pair bonding and how you take care of offspring There are biological reasons for what those are what they are If you havent given birth yet youll spend time with a pup thats thrown at you If you have given birth youll spend an equal amount of timePV oxytocin dont shift dramatically The montane voles their oxytocin levels are really low and half the level of what the prairie voles are Their levels do rise however when they become a parent They will end up having a similar level even though their behaviour isnt similarly high OXytocin during pregnancy The women will show significant elevation in third trimester in terms of the oxytocin levels You can see that as you increase leveis of oxytocin at pregnancy the cortisol levels are decline pretty dramatically We want to see whether these hormone changes affect their behaviour in caring for their offspring The more O level that you had at the third trimester it was moderately related to the increase of the maternal behaviour to the pup Since O levels and C are inversely related more O less C those who had lower C levels had negative association here had greater maternal behaviour in the third trimester These data are partly consistent with the vole data we saw a moment agoMutual Regulation vs SelfRegulation Theres a lot going on in terms of how they regulate their stress system What is the parent doing to facilitate the freeing up of energy the increase of complexity the creation of more associations and the formation of more complex neural representations We can take the infant parent dyad and stop them from sending any signals to the infant Stillface Facetoface paradigm How long can you stare someone down and not react Its difficult The parent in this case has to do it They do it pretty well Theyre just looking like they came from mars and have no relation to the child The child gets curious maybe smiles Whats going on Cooing occurs They will do these stress coping strategies once they become aroused and look away Eventually the negative effects will skyrocket How quickly can they recover once the still face is turned off Although they do recover in terms of physiological signals ie heart rate they still show some lingering affect Tronik is expert at thisyoutube video This is something we studied 30 40 years ago We didnt think infants can engage in social interaction There are reciprocal greetings between the mother and the infant Theyre working to coordinate their emotions Then we want the mother to not respond to the baby The infant picks up on this and tries to get the mother back They lose control of the posture because of the stress Its a little like the good the
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