Test 20 96. A vergence movement: a. utilizes the medial
longitudinal fasciculus   b. is stimulated by binocular
disparity   c. allows one to maintain fixation on objects moving
along the x axis   d. has a long latency period (approximately
300 msec)   e. requires continuous feedback   f. is under
cortical control    97. The optokinetic nystagmus:  a. has a
slow and a fast phase   b. can follow targets up to 100`/sec 
c. is tested using a rotating drum   d. classically has the
lesion in the ipsilateral cerebral hemisphere to      the
direction of the nystagmus   e. a parietal lesion is unlikely if
there is symmetrical optokinetic    98. The following are true:
a. the PPRF is the horizontal gaze centre   b. the saccades are
ballistic movements   c. the microdrift is a conjugate movement 
d. both vergences and pursuit movement require continuous   e.
the vestibulo ocular reflex is used as a test for brainstem
death    99. The rostral interstial nucleus of the medial
longitudinal fasciculus: a. is found in the