PSY 3061 Lecture 12: Biopsychology lecture 3.19.2018
Document Summary
Postnatal growth of the human brain: synaptogenesis. Increased number of synaptic connections: strengthening of synaptic connections. Implies that connection between neural networks is enhanced: myelination, development of myelin sheath. Critical and sensitive periods: a window of opportunity that particular experiences can influence development. If it is absolutely essential for an experience to occur within a particular interval to influence development, the interval is called a critical period. If an experience has a greater effect on development when it occurs during a particular interval but can still have weak effects outside the interval, the interval is called a sensitive period. Epigenetics (cid:862)the (cid:271)ra(cid:374)(cid:272)h of (cid:271)iology whi(cid:272)h studies the (cid:272)ausal i(cid:374)tera(cid:272)tio(cid:374)s (cid:271)etwee(cid:374) ge(cid:374)es a(cid:374)d their produ(cid:272)ts, whi(cid:272)h (cid:271)ri(cid:374)g the phe(cid:374)otype i(cid:374)to (cid:271)ei(cid:374)g(cid:863: waddington (1942, no changes to dna, but there are changes in genetic expression. Epigenetics: different forms of epigenetic modification, dna methylation.
