Bechtold Flashcards
Advantages for social/affiliative bonding
protection, food provision, stress reduction, social learning
types of early life imprinting
filial - young learns from parents
fraternal - learns from own species
sexual - young learns off desirable male
Westermarck effect
reverse sexual imprinting
individuals develop deep sexual aversion with other indivdiuals that were raised in same peer or family group
what does the olfactory system detect
- volatile compounds
- projects from olfactory bulb to amygdala
- social and non-social cues
what does VNO detect
- non-volatile compounds
- amygdala
- socially relevant and non-volatile cues
- VNO is sexually dimorphic
what receptors does the VNO use
V1R and V2R - different structures but neurons converge downstream
release pheromones
single/few molecules that elicit dramatic behavioural effects
primer pheromones
chemical signal that causes longer term effects
VNS cells in VNO signalling
- VNO uses TRP superfamily
- TRPC2 is important - main pathway
- TRPC2 KO mice have no aggression and try to sex other males
V1Rab KO mice
reduced sex drive, non maternal aggression
ESP1
- pheromone in tear fluid
- responsible for male/male aggression
- identifies sexual maturity and inhibits male sexual behaviour
Where are oxytocin and vasopressin made
SON and PVN
How does oxytocin modify signal
it modifies the action of neurons in the amygdala to strengthen recognition
