ED PSYCH 321 Lecture Notes - Lecture 6: Functional Magnetic Resonance Imaging, Diffusion Mri, Synaptic Pruning
3 Feb 2017
School
Department
Course
Professor
Document Summary
180 billion neuronal cells: transmit and store information, 2/3 glial cells. Neuroglia: gives structural support and insulates synapses. Glial cells make up the majority of total volume of cns. What we should keep in mind: microglia. Provide structural and physical support and nourishment for neurons. Transport gas, water, and metabolites from blood and remove wastes from nerve cells. Process through which brain circuits are insulated with myelin, which improves efficiency of information processing. Neurons: conducts nerve impulses, needed for higher order functioning. Brain functions by transmitting electrical signal across circuits that are composed of interconnected cells, called neurons. Neurons: nerve cells that receive and transmit information. Brain is sensitive to changes in its chemistry. By age 6, brain is already 95% of adult size. Neurotransmitters: specialized chemicals that carry electrical impulses between neurons. Synapse: the gap in space between neurons, across with neurotransmitters carry electrical impulses.
