There are multiple definitions:

1. left → anterior, right → posterior(English)

   • path of the vagi as they wander from thorax to abdomen
   • Anatomy, Neurology

2. left anterior-right posterior canal plane(English)

   • refers to gain of the torsional vestibulo-ocular reflex
   • RALP, VOR
   • Ophthalmology, ENT, Reflex
   • https://doi.org…res.2006.02.008