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Brainstem Circuit Links Breathing to Sleep Arousal, Explains SIDS Risk

Source: science.org

Researchers discovered a new brain circuit in mice that controls breathing and arousal states during sleep.
The circuit involves neurons in the medulla that activate breathing muscles and wake the brain when oxygen levels drop.
This finding explains sudden infant death syndrome (SIDS) risks and opens doors to new prevention strategies.

Scientists identified a specific neural circuit in the brainstem of mice that links breathing to arousal from sleep. When breathing falters, this circuit triggers both corrective breaths and wakefulness to prevent oxygen deprivation. The discovery, led by researchers at Case Western Reserve University, provides a biological explanation for SIDS, where infants fail to wake from dangerous breathing pauses, and highlights potential targets for therapies.