PSY397H5 Lecture Notes - Lecture 5: Dentate Gyrus, Granule Cell, Pyramidal Cell
Document Summary
No labelling questions, however some may require you to draw and label. Cutting the brain transversally will produce a cross sectional image: darker ring regions versus lighter regions that are not artificial, darker regions: cell bodies are found densely, lighter regions: myelinated glial cells. Pyramidal neurons: shaped like an inverted pyramid, with dendrites and axons hanging from it. In the white matter region, axons and dendrites of the pyramidal neurons are found: the neuron itself is placed along the light grey region. Dentate gyrus is another cell body region: these neurons are called granule cells because they are in the form of small, circular sand granules. Other cell body regions are ca1 and ca3. Perforant pathway is where info is sent through, and granule cells are the first to receive the info: granule cell dendrite is located on the post-synaptic terminal. If the signal is strong enough, it will produce an ap that will enter the dentate gyrus.
