Development of a non-invasive heart rate measurement method for sea turtles with dense keratinous scutes through effective electrode placement - Saito, Ayaka; Sakai, Kino; Kawai, Megumi; Lyu, Lyu; Kameda, Kazunari; Kudo, Hiromi; Sato, Katsufumi; Sakamoto, Kentaro Q. (Frontiers in Physiology, 2025)