PSY 105 Lecture Notes - Lecture 3: Brainstem, Basal Ganglia, Locus Coeruleus
15 Oct 2015
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Document Summary
Brain imaging: watching the brain in action. Psy105: structural neuroimaging techniques use advanced technology to create images of the living, healthy brain. Computerized axial tomography (ct or cat) scan: takes an image of the cross section of the brain. Positron emission tomography (pet: radioactive substances is injected into blood stream, then detectors are used to see where the activity is strong. How does the nervous system work: neurons cells in the nervous system that communicate with one another to perform information-processing tasked. About 100 billion neurons in the brain: gila cells that help support neurons. Neurons vary in size and shape, depending on their location and function. Motor, sensory and interneurons: motor , sensory only way we can feel, see, hear, etc. Interneurons connectors that help make connections between neurons, like a bridge or extension cord: the structure of neurons. Cell body contains nucleus, which provides energy for the neuron.
