Pscyh notes 3-6-08 - Axon terminal: (sends...

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21:15 CT (computer tomography) also called cat scan: series of x-rays that portray structure of brain. (cat scan). PET Scan (positron emission tomography): radioactive glucose is picked up by PET scanner to portray activity. (function of the brain rather than structure) MRI Scan (magnetic resonance imaging): uses magnetic energy to produce images of structures of the brain. fMRI (functional magnetic resonance imaging): uses many MRI images taken quickly in time to map brain function. Biological Psychology: studies links between biology and behavior (subfield of neuroscience). Anatomy of a neuron: Dendrites: receives signal (receives neurotransmitters) Cell body: provides life support for cell. Axon: extension of neuron ending in the axon terminals.
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Unformatted text preview: Axon terminal: (sends neurotransmitters) to next neuron. How neurons communicate: 1. Dendrites receive neurotransmitters (positive or negative) 2. Cell body counts negative and positive signals 3. If there are enough positive signals- fires 4. Electrical signal shoots down axon (action potential) 5. Axon terminal: (dumps neurotransmitters) to next neuron). Synapse (also called synaptic gap): o Area between axon terminal of sending neuron and receiving neuron. Neurotransmitter o Chemical messengers (float across synapse) o Can either be excitatory or inhibitory. Within the neuron (along axon) is electrical. Between neurons is chemical. 21:15 21:15 21:15...
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Pscyh notes 3-6-08 - Axon terminal: (sends...

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