Washington DC, July 3 -- As the Expedition 73 and Axiom Mission 4 (Ax-4) crews kept up their ongoing space biology studies onboard the International Space Station, one of the research included that of brain research. Meanwhile, a Progress cargo craft counts down to its launch to resupply the orbital residents this weekend, NASA stated.

NASA Flight Engineer Nichole Ayers took her turn on Wednesday in the Columbus laboratory module wearing neck and chest electrodes measuring oscillations in the blood flow from her brain to the heart for the Drain Brain 2.0 human research experiment. Similarly, Ax-4 private astronaut Tibor Kapu wore a cap that imaged blood flow in his cerebral artery using doppler ultrasound for the Cerebral Hemodynamics in...