NYU Langone Health Aug 5 2025 A new study provides the first visual evidence showing that brain circuits in living animals can be activated by ultrasound waves projected into specific patterns (holograms).  Led by scientists at NYU Langone Health and at the University of Zurich and ETH Zurich in Switzerland, the study describes a system that combines sources of ultrasound waves and a fiber scope connected to a camera to visualize in study mice brain targets that are directly activated by the