The 1958 International Geophysical Year Antarctic Expeditions
- Date of account
- 1957–1958
- Location
- Antarctic research stations, including South Pole
- Source
- model_recalled_reference
- Record updated
- 2026-10-10
Record summary
The International Geophysical Year established and expanded Antarctic stations whose personnel lived for extended periods in darkness, confinement, extreme cold and disrupted circadian conditions. Station logs, medical reports and expedition memoirs provide a comparatively structured setting for studying sleep, mood, perceptual changes and reports of unusual presence. This lead matters because it connects altered-state claims with monitored environments and operational records. The material is heterogeneous: station practices, medical documentation and national archives differ substantially in completeness and terminology.
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