NASA astronaut Josh Cassada works on the GRIP experiment

iss068e054122 (Feb. 14, 2023) --- Expedition 68 Flight Engineer Josh Cassada of NASA is seated in a specialized chair in the International Space Station's Columbus laboratory module for the GRIP human research experiment. The study investigates how astronauts regulate their grip force and move their arms when manipulating objects in microgravity in response to pre-programmed stimuli as a computer and video cameras record the responses.