https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13995130Edit ImageSaveSaveEditCropCustom TextExperiments in physiology. Facial expressions; AttentionOriginal public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 966 x 1200 px | 300 dpiLarge JPEG 2817 x 3500 px | 300 dpiBest Quality JPEG 4325 x 5373 px | 300 dpiFree DownloadExperiments in physiology. Facial expressions; AttentionMore