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Related Experiment Videos

Crickets in space.

E Horn1, S Boser, S Forster

  • 1Gravitational Physiology, University of Ulm, Albert-Einstein-Allee 11, D-89081 Ulm, Germany.

Acta Astronautica
|October 24, 2001
PubMed
Summary

The "Crickets in Space" experiment found that while cricket behavior was resilient to altered gravity, their position-sensitive interneurons (PSI) were significantly impacted. This suggests a critical window for gravity

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Space Biology

Background:

  • Crickets possess gravity-sensitive neuronal systems, making them ideal models for studying gravity's effects on development.
  • The
  • Crickets in Space
  • (CRISP) experiment investigated the interplay between genetic programs and gravitational forces on neuronal development.

Purpose of the Study:

  • To assess the impact of microgravity and hypergravity on cricket neurophysiology and behavior.
  • To identify developmental stages and neuronal populations most sensitive to altered gravitational conditions.

Main Methods:

  • Utilized eggs, 1st, 4th, and 6th stage larvae of Acheta domesticus.
  • Conducted post-flight experiments analyzing behavior, physiology of position-sensitive interneurons (PSI), and immunocytology of GABAergic motoneurons.
Keywords:
NASA Experiment Number 9301089

Related Experiment Videos

  • Examined peptidergic neurons in cerebral sensorimotor centers.

    • Main Results:

    • Cricket behavior showed low susceptibility to microgravity and hypergravity.
    • Position-sensitive interneurons (PSI) physiology was significantly affected by altered gravity.
    • GABAergic motoneuron soma size varied with 3g exposure, but arrangement remained unchanged; cerebral peptidergic neurons showed no significant modification.
    • Physiological and behavioral results were contradictory, suggesting gravity adaptation facilitated by accessory sensory organs.

    Conclusions:

    • Altered gravity impacts cricket neurophysiology, particularly PSI, more than behavior.
    • There appears to be a specific time window during development where microgravity or hypergravity exposure affects neuronal proliferation.
    • The findings highlight the complex interactions between genetic factors and the gravitational environment in shaping neuronal systems.