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Which 2 groups originally classified neurons by morphology? - ANSWER 1. Golgi 2. Ramon y Cajal What was the first technique used to visualize the neuron? - ANSWER Golgi staining technique How does golgi staining technique work? - ANSWER If you put brain tissue into solution with silver nitrate for a few days the solution goes into neuron and makes it visible What debate occurred between Golgi and Ramon/Cajal - ANSWER - Golgi thought that the nervous system was one connected network, which is wrong - Ramon and Cajal said they are cell bodies and neurons connect through synapses, which is correct What proved Ramon and Cajal to be correct over Golgi? - ANSWER electron microscopy showed us that they are separate neurons, not a single corrected network What modern techniques are now used to visualize neurons? - ANSWER Modern technology allows us to use fluorescent proteins (GFP) to label neurons What modern imaging tecnique is used? - ANSWER Brainbow technique What is the brainbow technique? - ANSWER label neurons with different colors to visualize morphology What are 4 different kinds of neurons: - ANSWER 1. unipolar 2. bipolar 3. pseudo-unipolar 4. multipolar What are unipolar cells? - ANSWER dendrites and axon on one side What are bipolar cells? - ANSWER Dendrites on one side, axon on the other What are pseudo-unipolar cells? - ANSWER A pseudounipolar neuron is a type of neuron which has one extension from its cell body