MedTrace Logo

Effects of Inverted Vision on Pointing and Grasping in Parabolic Flight

NCT02885844 · Status: UNKNOWN · Phase: NA · Type: INTERVENTIONAL · Enrollment: 18

Last updated 2016-09-01

No results posted yet for this study

Summary

Parabolic flight is the only ground-based condition in which weightlessness (0G) can be created long enough for safely testing changes in human perception and behavior. In addition to the 0G period, parabolic flight generates equal duration periods of 1.8G, which present another unique opportunity to test the same responses to hypergravity and back to 1G.

Spatial orientation perception is a critical subsystem that is used by the central nervous system in the control of vehicles and other complex systems in a high-level integrative function. Evidence from space flight research demonstrates that spatial orientation is altered by the transitions in gravito-inertial force levels (Clément 2011; Clément \& Reschke 2008), transitions corresponding to mission phases particularly critical for crew safety and mission success. Accurate perception of self-in-space motion and self-motion relative to other objects is critical for successful operations that involve motor control e.g. doing an extra-vehicule activity or piloting the spacecraft. To date, there is only limited operational evidence that these alterations cause functional impacts on mission-critical operations and control capabilities. Immediately after space flight, most crewmembers have reported some degree of disorientation/perceptual illusion, often accompanied by nausea (or other symptoms of motion sickness), and frequently manifested by lack of coordination, particularly during locomotion The hypothesis is that alteration in sensorimotor performance induced by inverted vision is gravity depend: maximum alteration during hypergravity, intermediary alteration during normal gravity, minimal alteration during weightlessness.

Conditions

  • Pointing Task
  • Gasping Task

Interventions

PROCEDURE

INVERTED VISION

The tasks will be performed either with normal or inverted vision (upside down) using commercial off-the-shelf inverting prism goggles

PROCEDURE

NORMAL VISON

subject's field of view will be restricted by goggles without lenses in order to be equivalent to the inverted vision one.

Sponsors & Collaborators

  • International Space University

    collaborator UNKNOWN

  • University Hospital, Caen

    lead OTHER

Principal Investigators

  • Clément GC Gilles · International Space University

Study Design

Allocation
NON_RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Model
CROSSOVER

Eligibility

Min Age
21 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2014-09-30
Primary Completion
2017-09-30
Completion
2017-10-31

Countries

  • France

Study Locations

More Related Trials

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02885844 on ClinicalTrials.gov