3.Bio%20Foundations - Section 3: Biological Foundations Psy...

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3. Biological Psychology 3) Biological Foundations 3.3: Basic Anatomy Section 3: Biological Foundations 2) Research Methods 3. Biological Psychology 3) Biological Psychology 3.3: Basic Anatomy Section 3: Biological Psychology 2) Research Methods Biological psychology relates behavior to brain function . Behavior can be viewed as one critical level of neuroscience . Thus, psychology is viewed as reductionistic by its attempt to integrate behavior, mind, and brain. Section 3: Biological Foundations Psy 1, Spring 2008 1
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Gene Activation Protein Synthesis Physiological Systems BEHAVIOR 3. Biological Psychology From Genes to Behavior • Genes ¾ Segments of amino acids on DNA ¾ Codes for production of all proteins ¾ Gene activation Æ protein synthesis • Protein synthesis ¾ Production of all organic matter ¾ ~70,000 different proteins in humans • Physiological systems ¾ Organization of proteins heart, muscle, brain, etc. • Environmental Factors ¾ Internal: chemical context ¾ External: social influences Gene Activation Protein Synthesis Physiological Systems BEHAVIOR 3. Biological Psychology From Genes to Behavior Internal Environment External Environment • Genotype ¾ Set of inherited genes ¾ Basis for protein synthesis • Phenotype ¾ Observable expression of genes body characteristics behavioral characteristics Section 3: Biological Foundations Psy 1, Spring 2008 2
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Gene Activation Protein Synthesis Physiological Systems BEHAVIOR 3. Biological Psychology From Genes to Behavior Internal Environment External Environment • Genotype ¾ Set of inherited genes ¾ Basis for protein synthesis • Phenotype ¾ Observable expression of genes body characteristics behavioral characteristics • Nature vs Nuture ¾ Role of genes in guiding behavior (i.e., behavioral genetics) ¾ Importance of genetics and environment on behavior. 3. Biological Psychology Genetic Influences: Brain Disorders ¾ Down’s syndrome -tr isomy ±23 - mental retardation ¾ PKU (phenylketonuria) recessive gene (1: 10,000) enzyme deficiency for phenylalanine reduced brain, mental retardation treatable by diet ¾ Huntington’s disease recessive gene CAG overproduction: 36- 125 times over basal ganglia, motor, cognitive dysfunction not treatable Section 3: Biological Foundations
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