6 rats in space - 2/10/11 1 Maintenance, Facilitation, or...

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Unformatted text preview: 2/10/11 1 Maintenance, Facilitation, or Induction? Vandenbergh: timing of puberty onset in female mice- Usually attain puberty in 38 - 56 days- With sexually active adult male present, puberty attained in 28 days Pheromone-mediated timing of developmental change- Cue is male urine- No effect with castrated male mice- rate-regulated neuroendocrine function 1 Roles of experience To discover mechanisms of development, need to:- examine structure-function relationships at multiple levels of organization- use appropriate behavioral measures- remember that development is characterized by probabilistic epigenesis 2 3 2/10/11 2 4 5 The birth transition Bio-social-behavioral shift Continuity of sensory function from prenatal to postnatal niches 6 The birth transition Stage 1 (approx 14 hours for 1st birth) Uterine contractions increase in frequency and duration From approx 20 min apart to every minute Cervical dilation Stage 2 Baby pushed into and through birth canal Stage 3 Baby emerges Placenta expelled from uterus 2/10/11...
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This note was uploaded on 06/01/2011 for the course PSYCH 2090 taught by Professor Goldstein, m during the Spring '07 term at Cornell University (Engineering School).

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6 rats in space - 2/10/11 1 Maintenance, Facilitation, or...

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