The device, which consists of two conductors fastened to the head by a rubber strap, significantly boosted results in a simple arithmetic test, they said.

这些科学家说，这个设备由两块导体组成，由一个橡胶带夹在头两侧，在一次简单的计算测试中能明显的提高成绩。

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Some nights the desire to head north is so strong I want to get out of my sleeping bag, strap on my skis and get going!

有数个夜晚，心中往北走的愿望是如此强烈，我真想爬出睡袋，装上滑雪板，向北出发！

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How to deal with a head strap Road slip to help?

如何处理好皮带道迎头溜帮？

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The head strap is near-identical and the same leather-look earcups and gold details have been used (including the gnarled housing on the 3.5mm jack) so that from a quick glance, they almost look the same.

ENGADGET: blogger-avatar

The body harness and head strap had to be as light and unobtrusive as possible too - no mean feat when dogs come in different shapes and sizes, even within breeds.

BBC: Paws 'Dogcam' aids search-and-rescue with canine tech

The head pad is larger and can be moved to better fit your head, the strap can be adjusted at a number of points and the sliders beneath the 0.7-inch OLED monitors can be adjusted independently from one another.

ENGADGET: Sony HMZ-T2 3D display, heads-in (video) HD