sequential tracking造句

Utilizing an optokinetic instrument, dyslexics were shown to have significantly reduced ocular-motor fixation, sequential tracking and visual span capacities as well as abnormal signal scrambling vs controls.
Dyslexia was postulated to occur when impaired ocular-motor fixation and sequential tracking due to a subclinical nystagmus of inner-ear and cerebellar origin scrambled the letter and word signals during reading and thus secondarily interfered with their cerebral cortical and related brain processing.
It's difficult to find sequential tracking in a sentence. 用sequential tracking造句挺难的