As the market quickly erased a sizable chunk of the losses explanations began whipping around: some said it was a fat-fingered trade, others blamed the shocking fall on some typeof technical error at an exchange.
In a preliminary study he conducted in 22 post-stroke patients using error-type training, he found 15 consecutive days of intense treatment yielded as much improvement as what patients got from intense conventional treadmill training two to three times a week in 10 or more weeks.