The judge has to let all of this in. After listening to ALV offer completely subjective opinions that she baked up in her "thinking brain", an objective measurement that is clinically validated has to be acceptable. Not letting it in would be like allowing someone to testify that an object was heavy, but letting a rebuttal witness show that a scale showed that it weighed less than an ounce.
Once she got rolling, Dr. DeMarte found the perfect balance between giving technical information and explaining things in simple terms. I can't imagine how the cross will go for the defense since she's VERY solid and knows that the science backs her up. I doubt she'll feel the need to give anyone a time out.