I also am attending Kundalini classes; but, it leans on the meditation side. I get all kinds of visions; including seeing out of my instructors eyes. The only physical sensations I've had at class were my Chakras "scintillating/vibrating", but, not like a vibration--almost like a metallic ringing. Sometimes, while meditating in class, my instructor comes to me and, spiritually, takes my hand and walks me around the class, where I see the other students meditating as I am.
Grant