As you enter Stage 3, or slow wave sleep, the rolling waves increase as your neurons fire in coordination.

当进入第三阶段，也就是慢波睡眠，神经元会协调放电，脑电波波动就会增加。

Slow wave sleep, which is when our muscles are repaired, our immune system is strengthened and our memory is consolidated, was 30 minutes shorter in September than in February.

慢波睡眠是指我们的肌肉得到修复、免疫系统得到加强、记忆得到巩固的时候，9 月份比 2 月份短了 30 分钟。

Here it comes, there's an abrupt jump from slow wave sleep.

来了，从慢波睡眠中突然跳出来。

" Results suggest that chronic declines in slow wave sleep, rather than individual differences at any given time, are important for predicting dementia risk, " Pase said.

“研究表明，相比在任何特定时间的个体差异，慢波睡眠时间长期减少对于预测痴呆风险很重要。”

The study found that the participants experienced seasonal variations in their rapid eye movement sleep, also known as REM sleep, as well as in their slow wave sleep, also known as deep sleep.

研究发现，参与者在快速眼动睡眠（也称为 REM 睡眠）和慢波睡眠（也称为深度睡眠）中经历了季节性变化。

" We then found that persons with greater declines in slow wave sleep over time had a higher risk of getting dementia over the next 17 years of follow-up, " said Pase via email.

“我们还发现，慢波睡眠时间随年龄增长减少幅度更大的人群，未来17年患痴呆症的风险更高。”