PSYC 2410 Lecture 4: Behavioral Neuronscience Week 2 09. 20.16
30 Nov 2016
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Golgi stain (potassium dichromate, silver nitrate): neurons (body+ axons) turn black; not very precise. Nissl stain (cresyl violet): cell bodies turn purple; can see where they are, how many, but no internal structure- not specific neurons. Myelin stain: only myelinated nerves/ fibers turn black: it stains only the white matter, stains myelinated nerves and fibers. Electron microscopy: amazing details: higher resolution, first stage of synthesis happens in the cell body. Darker purple means a higher density of cell bodies. Beneath the cell body, there is no dark purple stain this is: It is a 6 layer structure: white matter. Axons are cursing throughout the brain signaling communication. Stained black to show you where the axons are. Dorsal and ventral roots of spinal cord 31 pairs of spinal nerves. Grey matter: dorsal and ventral horns. Axons carry information down into the periphery.
