Autonomous Behavioral Health Countermeasures for Spaceflight

Over several years with National Space Biomedical Research Institute (NSBRI) support, the investigator team (in collaboration with others) has developed a suite of behavioral health countermeasures called the Virtual Space Station (VSS) designed for use by astronauts. The programs include conflict management training, depression treatment, and stress management modules. Each of these modules has been tested in relevant settings: The conflict content has been tested for usability and acceptability with astronauts. The stress management module has been evaluated in a randomized trial with business and law students. The 6-session, depression treatment module has been tested in a Phase II trial at Dartmouth with depressed employees, and in a randomized controlled trial in Boston. Currently, the VSS contains a validated suite of products that have been designed for ultimate use by astronauts. Our objective is to expand and customize the VSS for implementation with astronauts to provide a clinically validated tool to autonomously administer behavioral health countermeasures.

During this reporting year, we have made progress on each of our three specific aims:

Aim #1: Customize the Virtual Space Station (VSS) program for use by astronauts by evaluating the program in an isolated environment and collecting detailed information on program use, including user choices, ease of navigation, usability, and acceptability.

In this reporting year we have deployed the VSS in three space analog environments: The Hawaii Space Exploration Analog and Simulation (HI-SEAS) Mars Analog IV and V missions, the Canada Forces Alert Arctic Station, and the South Pole Station in Antarctica for use as a treatment resource. Each of these environments is isolated and confined with limited communication and access to the outside world. Our results from the HISEAS III mission were published this year.

Aim #2: Modify the existing VSS conflict management program to add enhanced conflict resolution content and an integrated behavioral health assessment. We have designed and built the integrated behavioral health assessment and it is currently being used in the HISEAS V mission. We have also expanded the VSS Conflict resolution content with a new module on interest-based negotiation. The module teaches negotiation techniques in an interactive scenario to guide users through techniques for achieving better conflict outcomes. This module is being evaluated at HISEAS V and at the South Pole station. The VSS has been converted to a web-based format, with the Conflict and Depression modules fully converted, and the Stress module conversion underway. The program has been placed on a permanent, secure server so it can be hosted online. This allows greater flexibility and easier deployment, as well as alleviating compatibility and continuity issues.

Aim #3: Enhance the VSS program to include a mood enhancement system that allows users to experience immersive relaxing situations using virtual reality. We have developed several virtual reality scenes in-house: Fall in New England, an Urban Retreat filmed around Houston public spaces, an indoor Control scene for experimental evaluation, a Boston scene, a Hawaii scene, a scene on Gile mountain, an evening pond scene, a rendered forest relaxation scene, a kittens scene, a scene in a park, a winter dog scene, and a rendered daytime lake scene with and without animals. We have also purchased several natural scenes filmed in Ireland, Bavaria, and Australia. All VR films greater than 15 minutes in length are on deployment in our analog environments. We have also performed a lab-based evaluation using physiologic measures to validate the use of VR for stress reduction and relaxation. The results from this laboratory evaluation were published this year.

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