To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S3 Cardiac arrest (Fig. 3-I). Transverse T1w-MRI of a long cardiac arrest of Mytilus galloprovincialis. Images are presented by 5.12 times speed from 100 sec to 202 sec (160 images every 0.64 sec). Slice position is set at the AV valve. A portable infrared photoplethysmograph: heartbeat of Mytilus galloprovincialis analyzed by MRI and application to Bathymodiolus septemdierum Eriko Seo, Toshiyuki Sazi, Morio Togawa, Osamu Nagata, Masataka Murakami, Shigeaki Kojima, and Yoshiteru Seo Biology Open 2016. 5:1752-1757; doi: 10.1242/bio.020909 Download Original Video