PSY 302 Lecture Notes - Lecture 3: Synaptic Pruning, Synaptogenesis, Fertility Medication

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Published on 28 Sep 2016
School
Ryerson University
Department
Psychology
Course
PSY 302
Professor
09/21/16
Chapter 3 – Biology and Behaviour
Structures of the Brain
oNeurons: basic units of the brain and the nervous system
oSynapses: connective spaces between neurons
oGila: nerve cell that develop and produce myelin to protect and nourish the
neurons
oThe Cerebral Cortex
Developmental Processes
oNeurogenesis (proliferation of neurons)
oSynaptogenesis (formation of synapses): Overproduction (genetic)
oSynaptic pruning (elimination of excess connections, experience-dependent)
oMyelination (insulation)
The Importance of Experience
oPlasticity: the capacity of the brain to be affected by experience
oExperience-expectant plasticity: the normal wiring of the brain as a result of
general experiences that human infants normally have
Sensitive period
Vulnerability
oExperience-dependent plasticity: neural connections are created and
reorganized throughout life as a function of experience that is unique to an
individual
Summary:
Structures of the Brain: neurons, synapses, glia, cerebral cortex
Developmental processes
oNeurogenesis
oSynaptogenesis
oSynaptic pruning
oMyelination
Plasticity (experience)
oExperience-expectant
oExperience-dependent
Genetic and Environmental Forces: Nature-nurture Interaction
Model of Interaction
Four fundamental relations
1. Parent’s Genotype to Child’s Genotype (human heredity)
oConception
oThe Chromosomes
Each chromosome contains genes
Basic units of heredity
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Document Summary

Structures of the brain: neurons: basic units of the brain and the nervous system, synapses: connective spaces between neurons, gila: nerve cell that develop and produce myelin to protect and nourish the neurons, the cerebral cortex. Developmental processes: neurogenesis (proliferation of neurons, synaptogenesis (formation of synapses): overproduction (genetic, synaptic pruning (elimination of excess connections, experience-dependent, myelination (insulation) The importance of experience: plasticity: the capacity of the brain to be affected by experience, experience-expectant plasticity: the normal wiring of the brain as a result of general experiences that human infants normally have. Vulnerability: experience-dependent plasticity: neural connections are created and reorganized throughout life as a function of experience that is unique to an individual. Structures of the brain: neurons, synapses, glia, cerebral cortex. Developmental processes: neurogenesis, synaptogenesis, synaptic pruning, myelination. Four fundamental relations: parent"s genotype to child"s genotype (human heredity, conception, the chromosomes. Stretches of dna (deoxyribonucleic acid): the chemical code for development (instructions: multiple births.

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