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stimulation of muscles, general excitability, sleep/wake cycles, learning and memory

deficit: alzheimer


brings nervous system into high alert, stress attention, pain reward, mood, alarm memory

excess: anxiety, mania
deficit: ADHD


(inhibitory) voluntary movement attention, reward system

excess: schizophrenia
deficit: parkinson's


(inhibitory)mood, emotional behavior, satiety, self-esteem, balance sleep/wake cycle

excess: violent
deficit: insomnia, depression, OCD, bulimia, anxiety, bipolar, increased appetite


(major inhibitory) acts like a brake to the excitatory neurotransmitters that lead to anxiety

excess: depression
deficit: anxiety, panic attacks, epilepsy


learning, memory

excess: epilepsy

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