Galvanometer skin tests were too inconsistent.

电流计的皮肤测量太不一致。

For $15,000 or so, iMotions, based in Copenhagen, gives retailers an EEG cap that detects brain activity, an eye-tracking headset that notes when an attractive object dilates pupils, and a galvanometer.

位于哥本哈根的iMotions 公司向零售商提供一顶检测大脑活动的脑电图帽、一个眼球追踪头戴设备（能注意到瞳孔何时因看到感兴趣的物品而扩大），以及一个电流计，总费用约为1。5万美元。