Evidence for Evolutionary Conservation of SBN & Mesolimbic Reward System Flashcards
1
Q
Which 2 fields suggest the SBN was present in early vertebrates?
A
Topography (distribution of anatomical features)
Neurochemistry
2
Q
What do studies show about the meAMY (Medial Amygdala) in mammals and reptiles?
A
- The region is functionally similar in mammals and reptiles
- Plays role in mediating aggression and courtship behaviours
3
Q
What does the POA mediate in mammals?
A
- Sexual behaviour
- Aggression
- Parental Care
4
Q
What does the POA mediate in Aves?
A
- aggression
- parental care
5
Q
What does the POA mediate in reptiles?
A
- aggression
- male sexual behaviour
6
Q
What does the POA mediate in amphibians
A
- regulation of both male and female sexual behaviours
7
Q
What does the POA mediate in Teleosts?
A
- regulating sexual behaviours
- aggression
- parental care
8
Q
What needs to happen for social behaviour to be adaptive? (and continue)
A
reinforcement
9
Q
Which area reinforces social behaviour
A
Mesolimbic reward system
10
Q
Give 3 examples of behaviours that are reinforced by the mesolimbic reward system
A
- sex with a conspecific (Paredes, 2009)
- winning a fight (Fuxjager et al., 2010)
- caring for offspring (Numan, 2007)
11
Q
How does the mesolimbic reward system reinforce social behaviours?
A
- dopaminergic signalling for reward processing
- dopamine is transported from the ventral tegmental are to dopaminergic neurons in the nucleus accumbens (NAcc) and amygdala (AMY)
