Serotonin - Regulates sleep patterns & aggressive behaviours. Important in obsessive-compulsive disorders. Low levels linked to depression., Dopamine - Important in emotional arousal, pleasure and voluntary movement. Low levels linked to depressed mood and slow, jerky movements,. Low levels linked to addictive behaviour. Important in motivation., Acetylcholine (ACH) - Important for voluntary movement and memory formation., Oxytocin - Important in trust, affection, maternal bonding., Endorphins - Affect mood. Reduce feelings of pain., Norepinephrine - Important for arousal and alertness., Neurotransmitters - Chemical messengers that work in the brain between neurons., Motor neurons - Carry messages from the central nervous system to muscles., Sensory neurons - Pass information from the senses to the brain., Inter-neurons - Only found in the central nervous system, connecting neurons to other neurons.,

Neurotransmitters

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