Acoustic Levitation Study Reveals Changes in Neuronal Firing Patterns Under Fluctuating Gravity

Researchers recently examined how fluctuations in gravity affect the electrical activity of neuronal spheroids suspended in an acoustic trap. The study, published in *npj Microgravity*, details how these three-dimensional clusters of nerve cells respond to changes in gravitational forces while maintained in a non-contact, levitated state.

The experimental setup utilized acoustic levitation to hold the neuronal spheroids in place, allowing scientists to observe the cells without the interference of physical substrates. By manipulating the gravitational environment, the team recorded shifts in the firing patterns and synchronization of the neurons within the clusters. The data indicate that these variations in gravity alter the functional connectivity of the spheroids, providing new information on how neural networks maintain stability or undergo changes when removed from standard Earth-gravity conditions. These findings offer a baseline for understanding how biological neural tissues behave in microgravity environments, such as those encountered during spaceflight.

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Date: June 9, 2026

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GOAI