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- Title
Monitoring of pre-frontal oxygen status in helicopter pilots using near-infrared spectrophotometers.
- Authors
Kikukawa, Azusa; Kobayashi, Asao; Miyamoto, Yoshinori
- Abstract
Background: There are few in-flight studies of cognition-related cerebral oxygen status in helicopter pilots. Methods: Four male helicopter pilots volunteered for nine sorties during visual flight in a BK117 and UH-60J. The pilots' pre-frontal oxy-hemoglobin (O2Hb) and deoxy-hemoglobin (HHb) concentration were continuously monitored from the right/left sections of the forehead using near-infrared spectrophotometers with a consideration of motion artifacts. Results: The concentration of O2Hb progressively increased (13.98 µmol⋅L-1 as a maximum increased concentration) in both the right/left sections of the forehead from the basal level during the heightened cognitive demand of helicopter flight. There was comparatively little change (4.32 µmol⋅L-1 as a maximum increased concentration) in HHb concentration during measurement of helicopter flight. HHb changes were apparently not affected by a heightened cognitive demand of helicopter pilots. Conclusion: These results demonstrate that near-infrared spectroscopy, especially O2Hb measurements, provides a sensitive method for the monitoring of cognitive demand (maneuvers) in helicopter pilots.
- Subjects
OXYGEN; HELICOPTER pilots; SPECTROPHOTOMETERS; HEMOGLOBINS; SPECTRUM analysis; NEAR infrared spectroscopy
- Publication
Dynamic Medicine, 2008, Vol 7, p1
- ISSN
1476-5918
- Publication type
Article
- DOI
10.1186/1476-5918-7-10