Task Progress:
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Specific Aim 1: Field Test
Over the last year, the full Field Test has completed testing on 9 crewmembers at the landing site in Kazakhstan. Overall, 71 testing sessions have been completed, including baseline data collection and post-flight follow up sessions. Using this data along with data from the Pilot Field Test, I have developed automated data analysis scripts for the Recovery from Fall, Tandem Walk, Sit-to-Stand, and Dynamic Visual Acuity tasks. We are currently working on improving data analysis of the tandem walk task and further automating all scripts. We visited our collaborators at the Institute for Biomedical Problems in Moscow for a data analysis planning meeting and to observe the test sessions and ensure our methods are consistent. We plan on sharing our automated scripts with them so the analyses are also consistent.
Specific Aim 2: Stroboscopic Vision Goggles.
Within the last three months (August-October), we completed testing of 20 healthy non-astronaut subjects. Although data analysis is on-going, the results thus far suggest that indeed, dynamic visual acuity is significantly worse with the minifying lenses, but is unchanged from baseline with the combination of stroboscopic goggles and minifying lenses. However, their dynamic visual acuity is still slightly worse with the stroboscopic goggles and minifying lenses, but this is likely due to the nature of the DVA test instead of an actual worsening of vision while in motion. Depending on the final results of the analysis, we may transition to using the stroboscopic goggles in the field if crewmembers are unable to perform the field test due to nausea.
Specific Aim 3: Stochastic Vestibular Stimulation
Between May and August, we completed data collection on 20 subjects to determine if stochastic vestibular stimulation is an effective countermeasure for motion sickness. Each test session was 2 hours and subjects participated in two sessions, comprising of a total of 80 hours of testing. Data analysis on this study is also still in progress, but initial results suggest that subjects lasted longer overall and had a less steep motion sickness progression when SVS was administered. Between March and May this year, we also conducted a study at Baylor College of Medicine to determine the minimum level of stimulation that warranted a specific amount of balance disturbance. This study was performed on 15 healthy subjects who stood with their eyes closed on foam and were given galvanic vestibular stimulation (GVS) ranging from 0 mA-4.5 mA by increments of 0.5 mA. In this study, we found that at 3.0 mA, the amount of balance disturbance subjects experienced plateaued, such that at amperage higher than 3.0 mA, subjects were not further disturbed. This will be used for future studies where GVS will be used to simulate vestibular dysfunction as an analog to spaceflight, such that we give the minimum stimulation for the maximal effect.
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Abstracts for Journals and Proceedings
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Rosenberg MJF, Peters BT, Reschke MF. "Dynamic visual acuity and landing sickness in crewmembers returning from long-duration spaceflight." 2016 NASA Human Research Program Investigators’ Workshop, Galveston, TX, February 8-11, 2016. 2016 NASA Human Research Program Investigators’ Workshop, Galveston, TX, February 8-11, 2016. , Feb-2016
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Abstracts for Journals and Proceedings
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Rosenberg MJF, Kreutzberg GA, Peters BT, Reschke MF. "Stroboscopic goggles as a countermeasure for dynamic visual acuity and landing sickness in crewmembers returning from long-duration spaceflight." 2017 NASA Human Research Program Investigators’ Workshop, Galveston, TX, January 23-26, 2017. 2017 NASA Human Research Program Investigators’ Workshop, Galveston, TX, January 23-26, 2017. , Jan-2017
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Abstracts for Journals and Proceedings
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Rosenberg MJF, Kreutzberg GA, Galvan-Garza RC, Mulavara AP, Reschke MF. "Non-pharmacological countermeasure to decrease landing sickness and improve functional performance while disoriented." 2017 NASA Human Research Program Investigators’ Workshop, Galveston, TX, January 23-26, 2017. 2017 NASA Human Research Program Investigators’ Workshop, Galveston, TX, January 23-26, 2017. , Jan-2017
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Abstracts for Journals and Proceedings
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Rosenberg MJF, Reschke MF, Cerisano JM, Kofman IS, Fisher EA, Gadd NE, May-Phillips TR, Lee SMC, Laurie SS, Stenger MB, Bloomberg JJ, Mulavara AP, Kozlovskaya I, Tomilovskaya E. "Field test: results of tandem walk performance after long-duration spaceflight." 2017 NASA Human Research Program Investigators’ Workshop, Galveston, TX, January 23-26, 2017. 2017 NASA Human Research Program Investigators’ Workshop, Galveston, TX, January 23-26, 2017. , Jan-2017
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Abstracts for Journals and Proceedings
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Rosenberg MJF, Galvan-Garza RC, Clark TK, Sherwood DP, Young LA, Karmali F. "Sensory precision limits vehicle control performance." 2016 NASA Human Research Program Investigators’ Workshop, Galveston, TX, February 8-11, 2016. 2016 NASA Human Research Program Investigators’ Workshop, Galveston, TX, February 8-11, 2016. , Feb-2016
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Abstracts for Journals and Proceedings
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Rosenberg MJF, Galvan-Garza RC, Clark TK, Sherwood DP, Young LA, Karmali F. "Sensory precision limits behavioral precision in a manual control task." Neuroscience 2016, San Diego, CA, November 12-16, 2016. Neuroscience 2016, San Diego, CA, November 12-16, 2016. , Nov-2016
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Abstracts for Journals and Proceedings
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Goel R, Rosenberg MJ, DeDios YE, Cohen HS, Bloomberg JJ, Mulavara AP. "Estimation of optimum stimulus amplitude for balance training using electrical stimulation of the vestibular system." Neuroscience 2016, San Diego, CA, November 12-16, 2016. Neuroscience 2016, San Diego, CA, November 12-16, 2016. , Nov-2016
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