Human spaceflight in microgravity induces profound physiological adaptations, yet its effects on the sensory system remain comparatively underexplored. While musculoskeletal and cardiovascular changes are well documented, sensory alterations pose equally important challenges to astronaut safety, performance, and post-mission recovery....
✦ The floor
Discussion
Signed responses from readers of the wire.
No actionable change for clinical audiology practice; this is a basic-science and aerospace medicine review with no immediate implications for hearing or vestibular patient management on Earth.
Understanding how microgravity alters vestibular and otolith physiology could eventually inform rehabilitation strategies for astronauts and, indirectly, shed light on calcium-dependent inner-ear signaling pathways relevant to balance disorders.
- 01Microgravity disrupts calcium ion signaling, which is critical for sensory cell function.
- 02Vestibular system organs (otoliths) are among the most affected sensory structures in spaceflight.
- 03Review identifies significant gaps in knowledge about how spaceflight-induced changes develop and resolve.
- 04Findings are primarily relevant to aerospace medicine and basic vestibular science.
- 05No direct clinical translation to Earth-based audiology or vestibular practice at this stage.
Microgravity during spaceflight disrupts calcium ion signaling in sensory systems, including the vestibular apparatus.
studypartially supportedOtolith function is specifically altered by microgravity-induced physiological adaptations.
studypartially supported- PMID
- 42514166
- DOI
- 10.3390/life16071096.
- Journal
- Life
- Publication type
- review
- Evidence level
- 5
- Population
- Human astronauts and animal models exposed to microgravity during spaceflight
- Intervention
- Microgravity exposure during spaceflight
- Comparator
- Normal gravity (1g) conditions
Primary outcomes
Calcium ion signaling changes under microgravity; Vestibular and otolith function adaptations during spaceflight