![Activating Specific Serotonin Neurons Reduced Anxiety and Promoted Sleep in Mice Activating Specific Serotonin Neurons Reduced Anxiety and Promoted Sleep in Mice](/sites/default/files/styles/large/public/field/image/neuronbraincellneuralnetwork3dillustrationhumannervoussystem.jpg-1440_1.jpg?itok=RW0xPNGi)
Neurons that are activated by the chemical messenger serotonin have a complex relationship to sleep-wake behaviors. That much is clear from past research, although the way the abundant…
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![Relationship Between Depression and Excessive Sleepiness](/sites/default/files/styles/large/public/field/image/exhaustedtiringwomanfaceexpressionwithstress-1440_1.jpg?itok=-tXqreqk)
People with depression and a type of excessive sleepiness called hypersomnolence sleep for longer periods than healthy individuals, but sleep just as well, according to a February 1 study in the…
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![Researchers Pinpoint Neurons That Cause and Maintain Wakefulness](/sites/default/files/styles/large/public/field/image/abstracttexturebackgroundwithsquares-1440_1.jpg?itok=Si4ywNAL)
New experiments show that brain cells called VTA dopaminergic neurons are directly responsible for causing and maintaining wakefulness in mice. When these neurons are active, they create wakeful…
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