Original ResearchPublished 7 August 2026Dose-dependent reduction of optic nerve sheath diameter during graded lower body negative pressure in healthy adults of both sexesAndrej Bergauer · Janez Urevc · Bianca Steuber · Karin Schmid-Zalaudek · Vid Pivec · Nandu GoswamiFrontiers in Network Physiologydoi 10.3389/fnetp.2026.1908460