PSY396H1 Chapter Notes - Chapter 3: Protein Kinase A, Cgmp-Dependent Protein Kinase, Cyclic Guanosine Monophosphate
Psychopharmacology: chapter 3 chemical signaling by neurotransmitters and hormones. The neuron is the basic functional unit of the nervous system, information transmitted from one nerve cell to another via neurotransmitters. Neuron doctrine: proposed that the nervous system is composed of individual cells that are not physically connected. Information flow is unidirectional from one cell to another. Reticulum theory: proposed instead that the nervous system consists of a series of vast continuous networks, all networks are interconnected. Information can flow in any direction among these elements. Axosomatic synapses synapses between a nerve terminal and a nerve cell body. Axoaxonic synapses involve one axon synapsing on the terminal of another axon (usually permits presynaptic cell to alter neurotransmitter release from postsynaptic cell) Presyanptic inhibition (reduce transmitter released from terminal) or presynaptic facilitation (enhanced release of transmitter) Neurotransmitters encompass several different kinds of chemical substances. Amino acids individual building blocks of proteins which also play other metabolic roles: glutamate, gaba.