This is an online supplement to: Auditory evoked potentials: Differences by sex, race, and menstrual cycle and correlations with common psychoacoustical tasks

The purpose of this supplement is to provide details about topics omitted from the published article because of space considerations. The headings and the organization of the text here are identical to that of the published article, but for copyright reasons, the published text has been omitted here and only the supplemental text appears. To make citations to the various sections unambiguous, the major headings are relabeled here with a "supp" (e.g., Isupp. INTRODUCTION, IIsupp. METHOD, etc.)