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Small children have this problem when they are sleeping. They just don't wake up from high-pitched noises, but require lower frequency alarms ideally with spoke
by foepys 7y ago
Small children have this problem when they are sleeping. They just don't wake up from high-pitched noises, but require lower frequency alarms ideally with spoken words: https://www.bbc.com/news/health-38918056 https://www.bbc.com/news/health-38918056
- anchpop 7y agoI wonder if this is an adaptation to not be woken up by infants crying at night until they're old enough that sleep isn't as important or they're able to help?