Saccadic eye movements are characterized by __________.

Question

BlackTom AI · Accepted Answer

The question asks about the defining characteristics of saccadic eye movements.
Option 1: 'fixation on a motionless object in one location' — This describes steady fixation, not saccades. Saccades involve movement between points, so this option mischaracterizes the behavior.
Option 2: 'fixation on a slowly moving object' — Tracking a moving object typically involves smooth pursuit, not saccades. Saccades are rapid jumps between targets, whereas smooth pursuit maintains fixation on a moving target. This option confuses pursuit with saccadic motion.
Option 3: 'brief fixations and rapid shifts to a different location' — This matches the classic description of saccades: short fixation periods followed by quick, ballistic eye movements to a new point of interest. It captures both the brief nature of fixations and the abrupt relocations characteristic of saccades.
Option 4: 'the quiet-eye effect' — The quiet-eye is a concept related to the duration of final fixation before an action in performance contexts, not a description of saccadic movements themselves. This option refers to a different phenomenon related to performance psychology rather than the basic motor pattern of saccades.
Thus, option 3 is the correct characterization, while the others describe related but distinct ocular behaviors or phenomena that do not define saccadic movements.

KINE-3650-001 (Fall 2025) Quiz - CH. 4 - Requires Respondus LockDown Browser

Saccadic eye movements are characterized by __________.

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