HRR - Task - Investigation of Partial-g Effects on Ocular Alignment (Shelhamer)

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Investigation of Partial-g Effects on Ocular Alignment (Shelhamer)

Last Published: 07/30/21 01:05:34 PM (Central)

Task Book: Entry
Principal Investigator: Shelhamer, Mark

Short Title: SM Ocular Alignment-Parabolic

Responsible HRP Element: Human Health Countermeasures

Collaborating Org(s):

Funding Status: Active - Currently funded and in progress

Procurement Mechanism(s):

Solicited

Aims:

1. Evaluate modifications that permit use of our tablet-computer system in ambient lighting (current version requires darkness to eliminate binocular alignment cues).

2. Assess binocular alignment (vertical and torsional skew) in different g levels of parabolic flight.

3. Determine the nature of the function that relates the sensorimotor response of binocular alignment to instantaneous g level: continuous (with what slope) or piecewise-linear (with a threshold).

Resources (Ground Analog)

Deliverables (1)

Category: Risk Characterization, Quantification
Subcategory: Evidence or Risk Characterization

Description:

This task will provide information on binocular alignment as a measure of otolith asymmetry – more specifically as a measure of the neural compensation for asymmetry, which changes as a function of g level.

Internal Customers:
None External Customers:
None

Mappings

Risk of Altered Sensorimotor/Vestibular Function Impacting Critical Mission Tasks

SM-103: Characterize the effects of short and long-duration weightlessness, with and without deep-space radiation, on spatial orientation and motion sickness after G transitions.

Investigation of Partial-g Effects on Ocular Alignment (Shelhamer)

Related Tasks (103)

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Risk Approach Plans (1)

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Ground-Based Flight Analogs Reduced Gravity Flight
Number of Subjects	10

Common Item(s)
	Risk of Altered Sensorimotor/Vestibular Function Impacting Critical Mission Tasks
	SM-103: Characterize the effects of short and long-duration weightlessness, with and without deep-space radiation, on spatial orientation and motion sickness after G transitions.