PSYC 1200 Chapter Notes - Chapter 3: Quantitative Trait Locus, Monoamine Neurotransmitter, Genetic Linkage
9 Nov 2012
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Document Summary
Action potentials trigger the release of chemicals called neurotransmitters: they diffuse across a synapse to communicate with other neurons, transmitters bind with receptors in the postsynaptic cell membrane, causing excitatory or inhibitory psp"s. Most neurons are linked in neural pathways, circuits, and networks. Ach plays a key role in muscular movement. Disturbances in the activity of the monoamine transmitters have been related to the development of depression and schizophrenia. Gaba is a widely distributed inhibitory transmitter. Endorphins contribute to the relief of pain. The nervous system can be divided into the: somatic nervous system. Connects to muscles and sensory receptors: autonomic nervous system. Connects to blood vessels, smooth muscle, and glands. The eeg can record broad patterns of electrical activity in the brain. Lesioning involves destroying a piece of the brain. Electrical stimulation of the brain in certain areas activates them. Ct scans, pet scans, mri scans, and fmri scans have been developed in recent years.
