Originally Posted by xanthomondo
...doesn't "really icey water" (not just ice water) cause the nystagmus to be away from the ear? COWS was the only thing I learned in neuro....and I don't think that's considered testing the spinal cord, either.
Yes. Cold water is equivalent to turning your head the opposite direction (hyperpolarizing the hair cells on the side with the water)--so the VOR is towards the cold water and nystagmus away from it. The opposite is true for warm water--slow movement contralateral and nystagmus ipsilateral.