Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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UNKNOWN
NA
18 participants
INTERVENTIONAL
2016-10-01
2019-12-31
Brief Summary
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Although it might justify that visuomotor performance will be better supported by egocentric target cueing under altered gravity conditions, the fact that exocentric target cueing induces less head movements and called for least attentional and physiological workload could be the key factors for a more efficient task localization process. Moreover, weightlessness can induce spatial disorientation, which can be additionally influenced by the intrinsic and extrinsic spatial reference frames (Gurfinkel et al., 1993; Glasauer \& Mittelstädt, 1997, 1998; Harm et al., 1998; Lipshits et al. 2005). We expect that during weightlessness the workload will be the key factor and thus we hypothesize that an exocentric target cueing will outperform egocentric target cueing.
To test this hypothesis, and find out which presentation scheme for target cueing (EGO, EXO, ED) contributes most to an efficient visual search, performance to a visuomotor task will be evaluated during parabolic flights in normogravity (1g), hypergravity (1.8g) and microgravity (0g). The visuomotor performance will be assessed by a multi-directional tapping task as defined by ISO9241-9, which requests for motor responses by aimed pointing movements. Besides analyzing the pointing performance, different workload indices will be additionally assessed to evaluate the effort spent on visuomotor coordination. The attentional workload will be evaluated by the performance of a secondary task (visual reaction-time task), which needs to be conducted in parallel to the visuomotor task. Furthermore, the workload will be also assessed subjectively by the NASA TLX rating scale and physiologically, by analyzing the heart rate variability (HRV).
Detailed Description
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Conditions
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Study Design
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NA
SINGLE_GROUP
BASIC_SCIENCE
Study Groups
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parabolic flights
parabolic flights in normogravity (1g), hypergravity (1.8g) and microgravity (0g).
3 levels of gravity (1G, 1.8G, 0G).
healthy volunteers will experience 3 levels of gravity (1G, 1.8G, 0G).
Interventions
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3 levels of gravity (1G, 1.8G, 0G).
healthy volunteers will experience 3 levels of gravity (1G, 1.8G, 0G).
Eligibility Criteria
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Inclusion Criteria
* Aged from 18 to 67
* Affiliated to a Social Security system and, for non-French resident, holding a European Health Insurance Card (EHIC)
* Who accepted to take part in the study
* Who have given their written stated consent
* Who has passed a medical examination similar to a standard aviation medical examination for private pilot aptitude (JAR FCL3 Class 2 medical examination). There will be no additional test performed for subject selection.
Exclusion Criteria
* Pregnant women
18 Years
67 Years
ALL
Yes
Sponsors
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University Hospital, Caen
OTHER
Responsible Party
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Locations
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CHU de Caen
Caen, , France
Countries
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Central Contacts
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Facility Contacts
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Other Identifiers
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16-115
Identifier Type: -
Identifier Source: org_study_id