In cold caloric stimulation test, the cold water induces movement of the eyeball in the following direction:

(a) Towards the opposite side(Ref. Cummings, 6th ed., page 2510)In bi-thermal caloric test the normal response is C O W S, i.e. with Cold water nystagmus is towards the Opposite side and with Warm water it is towards the Same side.If both meatus are irrigated simultaneously with cold water the normal response is an up-beating nystagmus with torsion.