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Neurotransmitters Important to PsychologistsNeurotransmitters - chemical messengers that travel across the synaptic gap between neuronsNeurotransmitterFunctionExamples of MalfunctionEnables muscle action, motor movements, learning, and memory.A lack of ACh producing neurons can cause Alzheimer’s disease Influences motor movement, learning, attention, and emotion (reward/pleasure)Excess dopamine receptor activity is linked to schizophrenia.Too little dopamine in brain can lead to Parkinson’s disease (tremors & decreased mobility).Affects mood, hunger, sleep, and arousalToo little serotonin is linked to depression. (Anti-depression drugs raise serotonin levels)Helps control alertness and arousalToo little can depress moodPain controlInvolved in addictionsA major inhibitory neurotransmitter. Undersupply linked to seizures, tremors, and insomniaA major excitatory neurotransmitter; involved in memory. Oversupply can overstimulate brain, producing migraines or seizures (one reason why people avoid MSG in food)Neurotransmitters Important to PsychologistsNeurotransmitters - chemical messengers that travel across the synaptic gap between neuronsNeurotransmitterFunctionExamples of MalfunctionEnables muscle action, motor movements, learning, and memory.A lack of ACh producing neurons can cause Alzheimer’s disease Influences motor movement, learning, attention, and emotion (reward/pleasure)Excess dopamine receptor activity is linked to schizophrenia.Too little dopamine in brain can lead to Parkinson’s disease (tremors & decreased mobility).Affects mood, hunger, sleep, and arousalToo little serotonin is linked to depression. (Anti-depression drugs raise serotonin levels)Helps control alertness and arousalToo little can depress moodPain controlInvolved in addictionsA major inhibitory neurotransmitter. Undersupply linked to seizures, tremors, and insomniaA major excitatory neurotransmitter; involved in memory. Oversupply can overstimulate brain, producing migraines or seizures (one reason why people avoid MSG in food) ................
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