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Tag: narcolepsy

How Dorsal Raphe Serotonin Neurons Suppress Cataplexy

Serotonin neurons in the brain inhibit cataplexy by reducing activity in the amygdala, an international research team has discovered. Cataplexy is a sudden short term episode of muscle weakness accompanied by full conscious awareness. It is typically triggered by a sudden emotional excitement of positive valence such as laughter. A new study, led by researchers […]

When Your Spinal Fluid Acts Like A Sleeping Pill

Adults with an elevated need for sleep have a substance in their cerebrospinal fluid that makes them want to doze off. This disabling sleep disorder called “primary hypersomnia” is separate from better-known conditions such as sleep apnea or narcolepsy. People with the condition regularly sleep more than 70 hours per week and have difficulties awakening. […]