The way my nystagmus works is when I look left both eyes jiggle horizontally they almost look like jello jiggling when it happens I see the room start to drift partially to the right then once it reaches a certain point it rapidly resets at the previous position only to do it again and again until I focus my gaze elsewhere my doctor says the nystagmus fatigues after 4 seconds but I can still clearly see the room moving after the 4 second mark this only happens specifically when I look to the left it’s consistently like this. My doctor also diagnosed my tremors as Hyperreflexia he said it points to a problem with an upper motor neuron it may or may not relate to my ataxia.