In the article “Halothane and Cardiac Autonomic Control in Infants: Assessment with Quantitative Respiratory Sinus Arrhythmia” by T. F. Oberlander et al. (Pediatr Res 40:710-717, 1996) the text on page 712 incorrectly cites two equations as “AS = H/10.6 and AP = (L-H/1.027)/4” whereas they should read “AS = (L-1.057*H)/4 and AP = H/10.6.” The authors regret this error.