Why would it be impossible to have more than 20 to 40 fixations per second?
A)Vision cannot scan more than 200 to 400 items per second.
B)Memory cannot absorb more than 200 to 400 items per second.
C)The eye muscles would fatigue at any faster rate.
D)Each saccade lasts 25 to 50 ms.

Question

Why would it be impossible to have more than 20 to 40 fixations per second?​
A)Vision cannot scan more than 200 to 400 items per second.
B)​Memory cannot absorb more than 200 to 400 items per second.
C)​The eye muscles would fatigue at any faster rate.
D)​Each saccade lasts 25 to 50 ms.

Quizplus · Accepted Answer

Each saccade, or rapid eye movement, lasts 25 to 50 milliseconds. Therefore, it would be impossible to have more than 20 to 40 fixations per second because the eye cannot make saccades faster than that rate. Options A and B are not relevant to the limitation on fixations per second, and while eye muscle fatigue can occur, it is not the primary reason for the limit on fixations per second.

Why Would It Be Impossible to Have More Than 20