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Do you ever feel like  Portal 2  is making your brain overheat? You should get that checked, and thanks to researchers in Norfolk, Virginia, there's an easier way to do so. The Children's Hospital of The King's Daughters has developed a device the diameter of a poker chip that sits atop a patient's head; by detecting the microwaves that all human tissues produce, it calculates brain temperature without the need for messy skull-popping. The waves pass through the bone to give doctors precise, up-to-the-minute results, which can help prevent brain damage due to overheating. One possible use for the technology is helping hypoxic (oxygen lacking) infants, who can be treated with cooling therapies. Of course, you can probably make do with that old home remedy: just put a bag of frozen carrots on your head next time GlaDOS has you stumped. Gizmag Science Newsline

You already know the strange powers of Stephin Merritt, but today we're talking about  real  magnetic fields. Powerful electromagnets, it turns out, can do remarkable things to the brain -- in this case, prevent a volunteer from reciting "Humpty Dumpty." The carefully directed magnets temporarily disrupt the brain's speech centers; the volunteer can still  sing  the rhyme using different areas of the brain, but simply can't overcome a series of stammers when trying to merely recite it. Of course, it's not all mad scientist applications: the UK team experimenting with transcranial magnetic stimulation (TMS) thinks it can help us understand and treat migraines (as we've seen before with the Migraine Zapper),depression, and ADHD, among other ailments. But improving physical well-being doesn't make for nearly as entertaining media -- see the British inflict some involuntary quiet time in the video above. Physorg New Scientist

As trippy as mind-control still seems to us, we've already seen it implemented in everything from wheelchairs to pricey gaming (and car driving!) headsets. But the problem is that they measure brain activity outside the skull -- you know, the thing we've evolved to shield the murky goings-on in our minds from prying EEG sensors. Now, though, a team of Washington University researchers appears to have happened upon a more effective -- albeit, invasive -- approach. The researchers got some brave specimens to move a mouse cursor by implanting plastic pads containing electrodes underneath their skulls, with the sensors sitting on the surface of the brain . That, they say, gives them access to more telling, high-frequency waves that say a lot more about cognitive intentions. In the end, the subjects moved the cursors by thinking one of these sounds: "ee," "ah," "oo," and "eh." Brain-computer interfaces ain't new, of course, b...