Video 1 (VIDEO) Hong Kong University of Science and Technology This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption In vivo 3P calcium imaging of spontaneous neuronal activity at different depths below pia of the somatosensory cortex of a CCK-GCaMP6s mouse (4-month-old) through the intact skull (110-μm thickness) with system correction only (left) and full AO correction (right). Credit HKUST Usage Restrictions N/A License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.