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At every CES I've ever been to, there's been one or two gadgets promising to boost your mental health. In recent years, the number of companies making forays into this space has grown, and will likely continue to do so in the future. Could it be, much like the number of people wearing heart-monitoring wearables today, everyone will be strapping an EEG to their skulls a decade or so down the line? It's more likely than you think, so it's worth asking what these devices are good for, what benefit they could bring, and where does the science end and the hype begin.
An Electroencephalogram (EEG) is a clinical tool to monitor the electrical activity of our brains. Put very simply, our minds are constantly moving ions around, and when they reach the scalp, it's possible to measure those ions. By placing electrodes on the scalp, you can record the changes in voltages pushed out by our brains more or less in real time. These voltages are commonly grouped into categories, which are often described as brain waves. Each one represents a different state of mind: Gamma (hard thinking), Beta (anxious or active), Alpha (relaxed), Theta (creative, or dreaming) and Delta (asleep).
Professor Karl Friston at University College London is one of the world's most influential neuroscientists and an expert in brain imaging. He explained that these technologies can be used to diagnose issues both in the structure and function of the brain. And while there are many technologies which can look at how our brains work, "we're a long way away from understanding the brain like we understand the heart." Broadl
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ExpressVPN is back on sale again, and its two-year plans are up to 78 percent off right now. You can get the Advanced tier for $101 for 28 months. This is marked down from the $392 that this time frame normally costs. On a per-month basis, it works out to roughly $3.59 for the promo period.
We've consistently liked ExpressVPN because it's fast, easy to use and widely available across a large global server network. In fact, it's our current pick for best premium VPN. One of the biggest drawbacks has always been its high cost, and this deal temporarily solves that issue.
In our review we were able to get fast download and upload speeds, losing only 7 percent in the former and 2 percent in the latter worldwide. We found that it could unblock Netflix anywhere, and its mobile and desktop apps were simple to operate. We gave ExpressVPN an overall score of 85 out of 100.
The virtual private network service now has three tiers. Basic is cheaper with fewer features, while Pro costs more and adds extra perks like support for 14 simultaneous devices and a password manager. Advanced sits in the middle and includes the password manager but only supports 12 devices.
The Basic plan is $78 right now for 28 months, down from $363, and the Pro plan is $168, down from $560. That's 78 percent and 70 percent off, respectively. All plans carry a 30-day money-back guarantee for new users, so you can try it without committin
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