PSYC 2000 Chapter : The Biological Perspective
Document Summary
Neural communication: the bodies infor system is built from billions of interconnected cells called neurons or nerve cells, look at the chart on powerpoint*** Action potential properties: the action potential abides by an all-or-none principle: it either fires or it doesn"t, intensity of an action potential remains the same, throughout the length of the axon, refractory period: can"t start again immediately. Neural communication: synapse: a junction between the axon tip of the sending neuron and the dentrite or cell body of the receiving neuron, tiny gap. On the receptor sites of the next cell. Increasing or decreasing the activity of that cell: antagonists-> block or reduce a cell"s response to the action of other chemicals or neurotransmitters. Central nervous system: part of the nervous system consisting of the brain and spinal cord, spinal cord: a long bundle of neurons that carries messages.
