It's not triggered by movement like vertigo would be. But yes, I feel exactly like you describe - like sometimes my brain is buzzing inside my skull. Lately, too much multi tasking because multiple "systems" (watching and listening to multiple people talk at once, reading and listening to background noise, walking and talking/ focusing on an object visually/ looking around, focusing back and forth on different things like switching between TV and phone) makes the balance/ dizziness much worse, ear ringing, and head pressure/ ear pressure, and that brain shaking feeling. Scrolling or reading on my phone is also hard.
My PT has me doing exercises where I walk in a line (loosely) and follow my finger from left to right for 1 min as fast as I can tolerate, standing on one foot with eyes closed (VERY HARD for me), and one foot with eyes open while following my finger left to right.

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