Stimulation of horizontal semicircular canal causes nystagmus in which directions ?
Ans. is 'b' i.e., Horizontal The cupulae of the semicircular canals are stimulated by movement of endolymphatic fluid and each canal causes the nystagmus in its own plane :- Stimulation of horizontal SCC - 4 Horizontal nystagmus. Stimulation of superior SCC - 4 Rotary nystagmus. Stimulation of veical SCC - Veical nystagmus
Veical
Horizontal
Rotary
Any of the three