You are scanning a crowd to look for your friend's face. As your gaze stops on each face, you are making a ______. As your gaze moves between faces, you are making a _________. a. accade; fixation b. fixation; saccade c. focus point; saccade d. fixation; smooth pursuit

You are scanning a crowd to look for your friend's face. As your gaze stops on each face, you are making a . As your gaze moves between faces, you are making a ___. a. accade; fixation b. fixation; saccade c. focus point; saccade d. fixation; smooth pursuit

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter30: Sensory Perception

Section: Chapter Questions

Problem 12SA

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Question

You are scanning a crowd to look for your friend's face. As your gaze stops on each face, you are making a ______. As your gaze moves between faces, you are making a _________.

a. accade; fixation

b. fixation; saccade

c. focus point; saccade

d. fixation; smooth pursuit

Expert Solution

Step 1

Eye movement

It includes the voluntary or involuntary movement of the eyes, which help in acquiring, fixating and tracking the visual stimuli.

There are four types of eye movements. These are:

saccades,
smooth pursuit movements,
vergence movements
vestibulo-ocular movements.

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