CClinicalTrials.gg
Status unknownNCT02850380DownUpdated Aug 1, 2016

Spatial Orientation and Motor Skills: How to Flip Switches "Down" in Weightlessness?

An interventional study of FLIP SWITCHES "DOWN" IN WEIGHTLESSNESS in Healthy Volunteers, sponsored by University Hospital, Caen. Status unknown at 1 site in France. Open to participants aged 20 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2016-08-01.

Sponsored by University Hospital, Caen · Not applicable and Interventional

The sponsor has not verified this record recently (last verified Jul 2016), so the status shown — last known as Recruiting — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
18
Allocation
Not applicable
Ages
20 Years to 65 Years
Sex
All
01

Study summary

The purpose of the study is to investigate spatial orientation in weightlessness as it manifests not in perception but rather in motor performance by direction and reaction time of flip switch.

Hypotheses are that flip switch:

  1. will be biased towards visual allocentric cues when those are available;
  2. will be biased towards the egocentric reference when tactile cues are added;
  3. will be dominated by egocentric cues when visual cues are not available;
  4. will be delayed and more variable when confirmatory gravitational cues are absent;
  5. will be faster and more reliable in absence of conflicting gravitational cues, and even more so when tactile cues are added;
  6. The difference will be more pronounce when tested under Dual-task condition
02

Conditions studied

  • Healthy Volunteers
03

In context

Lead sponsor

University Hospital, Caen is the lead sponsor of 505 studies on the registry; 80 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
20 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Healthy volunteers (men or women)
  • Aged from 20 to 65
  • 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.

Subjects will be staff member of the team or of other teams participating in the parabolic flight campaign

Exclusion criteria

Exclusion Criteria:

  • Person who took part in a previous biomedical research protocol, of which exclusion period is not terminated
  • Person who has already participated in a parabolic flight
  • Pregnant women
05

Study design

Phase
Not applicable
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
18 participants (estimated)

Study arms

  • Other
    spatial orientation in weightlessness

    subjects will be asked to flip a series of switches into the "off" position. On Earth, the "off" position corresponds to "down" in all three reference frames: the visual allocentric, the non-visual allocentric as well as the egocentric frames. We expect that flip direction will be dominated by visual allocentric cues when those are available, will be delayed and more variable when confirmatory gravitational cues are absent, and will be biased towards the egocentric reference when tactile cues are added

    Other: FLIP SWITCHES "DOWN" IN WEIGHTLESSNESS

Interventions

  • OtherFLIP SWITCHES "DOWN" IN WEIGHTLESSNESS

    The circular instrument panel that subjects will see into the cylindrical mask consists of one switch surrounded by a luminous ring (left part of the figure below). The switch can be flipped into any direction within the full 360° range. The switch provides no visual cues about "down", but the experimenter can add such cues by means of visually polarized labelling displayed on a circular black screen at the center of the panel (right part the figure below).

06

What researchers measure

Primary outcomes

  1. reaction time of flip switch measured with a chronometer

    Time frame: baseline

  2. Direction of flip switch measured with the circular instrument panel

    Time frame: baseline

07

Study locations

1 of 1 sites recruiting
  • Caen CHU
    Caen, 14000, France
    Recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 1, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02850380
Lead sponsor
University Hospital, Caen
Collaborators
Novespace
Responsible party
Sponsor
First posted
Aug 1, 2016
Start date
Sep 2015
Primary completion
Sep 2018 (estimated)
Completion
Sep 2018 (estimated)
Last update
Aug 1, 2016

Study contacts

Pierre DP Denise, PhD
Contact
pierre.denise@unicaen.fr
02.31.06.81.32 ext. +33
Cathy GC Gaillard
Contact
gaillard-c@chu-caen.fr
02 31 06 53 49 ext. +33
Pierre DP Denise, PhD
principal investigator · CHU Caen

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Jul 2016. You cannot join it, but the record below documents what was studied.

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