An RF Safe article argues that plasma membrane potential (Vm) is a key control variable for immune cell behavior by shaping ion driving forces, especially Ca2+ influx through CRAC channels and K+ channel–mediated hyperpolarization. It describes proposed links between Vm-regulated ion flux and downstream immune functions such as T-cell activation (NFAT/NF-κB signaling), macrophage polarization, respiratory burst capacity, and NLRP3 inflammasome activation. The piece also mentions that external electric fields can influence T-cell migration and activation markers under some conditions, but it does not present new experimental data in the excerpt provided.

This animal study reports that Drosophila melanogaster larvae can sense electric fields and exhibit robust electrotaxis toward the cathode in controlled environments. The authors identify head-tip sensory neurons required for this behavior and report calcium-imaging evidence that Gr66a-positive neurons encode field strength and orientation. The work supports electrosensation as a functional sensory modality in Drosophila larvae and demonstrates measurable neural and behavioral responses to electric fields under the studied conditions.