Octo-patch rig (IMAGE) Allen Institute Caption The octo-patch rig is a specialized microscope allowing neuroscientists to record electrical properties from and map connections between up to eight neurons simultaneously. Credit Credit: Steven Hurd/Allen Institute Usage Restrictions None 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.