Psychology 2030A/B Chapter Notes - Chapter 2: Gamma-Aminobutyric Acid, Reticular Formation, Occipital Lobe
Chapter 2 an integrative approach to psychopathology. Diathesis-stress model individuals inherit from multiple genes, tendencies to express certain traits or behaviours which may be activated under conditions of stress. Epigenetics means on or around, genes are turned on or off by cellular material located outside of the genome. Cross-fostering of rats by calm, supportive behaviour by mothers can be passed down independent of genetic influences. Pattern of inheritance involves differences in maternal care. Brain composed of nerve cells called neurons. Each contains a central body with two kinds of branches: dendrite: numerous receptors that receive messages as chemical impulses and are converted to electrical impulses, axon: transmits these impulses to other neurons. Synaptic cleft space between axon of one neuron and dendrite of another. Neurotransmitters chemicals released from one axon, transmit the impulse to the other. Brain composed of two parts: brain stem. Hindbrain contains medulla, pons, cerebellum, regulates automatic activities.