Video games and ASMR: The science of pop-culture tingles

She speaks in a low, patient whisper punctuated by a wide smile, her face inches away from the camera. Her voice is soothing and her eyes are warm. "Let me give you this shield potion," she says, reaching out of frame. "I only have one of them, all right, so you can have it." She pulls out a squat mason jar filled with baby-blue liquid, a blue ribbon tied around the top.