It showed two concept devices at CES: a somewhat normal-looking phone with an AMOLED screen that can be rolled out vertically to increase the screen size (up to 6.7 inches), and a cylindrical tube you can open up like a papyrus scroll to view a 17-inch OLED rollable display.

Overall, however, Gouzoules’ data suggests that humans are pretty good at distinguishing screams from other nonverbal vocalizations, regardless of whether they’re fearful, excited, or aggressive.

When it’s closed, the Galaxy Fold looks like two elongated phones pressed together, attached by a hinge on one side. The Fold has what Samsung calls a Dynamic AMOLED display, the same display that's in the Galaxy S10 phones.