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CU Denver PSYC 1000 - Chapter Three: Neuron signals & Neurotransmitters

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PSYC 100 1st Edition Lecture 6Outline of Last Lecture I. Mind vs. BrainII. Parts of the neuronIII. Communication within the neuronOutline of Current Lecture II. Pre synaptic neuron III. How the signal reaches the neuron IV. How it stops V. Neurotransmitters Current LectureBrain and nervous system continued:Pre synaptic neuron -Signals between a neuron: is a chemical signal, in milliseconds between neurons-When one neuron in connected to another it is connected by either the cell body or dendrites How the signal reaches the neuron:Air sacs inside the neurons are called vesicles and inside the vesicles contain neuron transmitters: chemicals that have a shape that matches a space on the receptor site or protein moleculeVesicles fused to wall and spit out neuron transmitters that bounce around and connect to receptor site creating the signal, then one of the two ways that cells stop the signal will take place. Sending inhibitory signal or excited signal How it stops:Cells have ways of ending a neural signal: (must take breaks cannot be constantly going)1. Enzyme: deactivation can destroy a neurotransmitter: acedocoleneThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.2. Reuptake: can be reused in the cell taken back into the cellNeurotransmitters: any chemical that can signal a neuron (well researched neurotransmitters)Agonist: enhances or mimics and neurotransmitterAntagonist: blocks or inhibits the effect of a neurotransmitter A drug can increase or decrease the effects on a neurotransmitter 1. Acetylcholine: memory, people that suffer from Alzheimer's disease have dying acetylcholine neurotransmitters. Stimulant in your brain 2. Dopamine: pleasure and reward, schizophrenia: excess dopamine in the front part of there brain. Parkinson’s disease: decrease in dopamine in body. People with schizophrenia will display shuffling and Parkinson’s like actions when on to much medication 3. Serotonin: associated with mood, sleep. Selective Serotonin Reuptake Inhibitors (SSRI): inhibit the reuptake. Increases theaffect of the serotonin.4. Norepinephrine: “fight or flight” response. 5. Glutamate: (up arrow) excitatory all over brain very general. 6. GABA: (down arrow) general inhibitory. Calms the brain down, take Xanax and the GABA calms the brain down. 7. Endorphins: Endogenous morphine. Our bodies way to control pain. “endorphin high” when body releases so much when exercising can feel


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