LI	Laser irradiation (light with the characteristics of laser used in experimental studies)
LED	Light-emitting diode (light with the characteristics of light-emitting diodes)
PBM	Photobiomodulation—the general term for the use of non-ablative light (either laser or LEDs) modulating biological processes
PBMt	The application of PBM in a therapeutic manner
IR	Infrared
DRG	Dorsal root ganglion/ia
AIS	Axon initial segment
MMP	Mitochondrial membrane potential
FAF	Fast axonal flow
LLLT	Low-level laser therapy