Bilateral past-pointing is due to defect in
Bilateral past pointing is due to defect in vestibular system Past pointing, falling and the slow component of nystagmus are all in the same direction. if there is acute vestibular failure say on the right side, nystagmus is to the left side but past pointing and falling towards right Ref: PL Dhingra 6th edition of Ear, Nose and Throat; Pg no 42
Brainstem
Cerebellum
Vestibular system
Basal ganglia
Ear