Movie S2.

Head nodding. Some dogs showed head nodding in a vertical manner. These movements could occur as an isolated sign or progress to more severe myoclonic twitches.

Generalized myoclonic epilepsy with photosensitivity in juvenile dogs caused by a defective DIRAS family GTPase 1

Franziska Wielaender, Riika Sarviaho, Fiona James, Marjo K. Hytönen, Miguel A. Cortez, Gerhard Kluger, Lotta L. E. Koskinen, Meharji Arumilli, Marion Kornberg, Andrea Bathen-Noethen, Andrea Tipold, Kai Rentmeister, Sofie F. M. Bhatti, Velia Hülsmeyer, Irene C. Boettcher, Carina Tästensen, Thomas Flegel, Elisabeth Dietschi, Tosso Leeb, Kaspar Matiasek, Andrea Fischer, and Hannes Lohi

PNAS. 2017. 114:2669-2674 DOI: 10.1073/pnas.1614478114