6 month old baby girl

So just recently out baby girl, has been doing this twitch like thing...my S.I.L was telling me she said that her neice looks like a robot that's losing circut or how she looks when she has a seizure... We just had her 6month check up yesterday and the Dr said everything looks amazing with her... What do you ladies think any pediatrions on here, does any of your babys do this ? Also she's only done this about 3x in the past two days, and it last for like 5 seconds