Many of us have experienced the effects of sleep deprivation: feeling tired and cranky, or finding it hard to concentrate. Sleep is more important for our brains than you may realise.
Although it may appear you’re “switching off” when you fall asleep, the brain is far from inactive. What we know from studying patterns of brain electrical activity is that while you sleep, your brain cycles through two main types of patterns: rapid eye movement (REM) sleep and slow-wave sleep.
Slow-wave sleep, which occurs more at the beginning of the night, is characterised by slow rhythms of electrical activity across large numbers of brain cells (occurring one to four times per second). As the night progresses, we have more and more REM sleep. During REM sleep we often have vivid dreams, and our brains show similar patterns of activity to when we are awake.
What are our brains doing while we sleep?
Sleep serves many different functions. One of these is to help us remember experiences we had during the day. REM sleep is thought to be important for emotional memories (for example, memories involving fear) or procedural memory (such as how to ride a bike). On the other hand, slow-wave sleep is thought to reflect the storing of so-called “declarative” memories that are the conscious record of your experiences and what you know (for example, what you had for breakfast).
Google has never really had a great strategy for podcasts, leaving Android users to hunt for third-party apps to manage their subscriptions and play new episodes. (Apple's standalone Podcasts app isn't very good either, but at least it exists.) Now, it looks like the search giant finally has some semblance of a solution that should make it easier to listen to podcasts across your Google and Android devices.
Westworld returns to Australian screens today, April 23. As the Australian Government continues to come down on piracy sites, you might be looking for a cheap, legal way to watch. Just like we did with Game of Thrones, we've worked out the most cost-effective option. You can get the series for free, if you're willing to wait - or, you can split the difference with a mate and watch live for a cool $20.