Chad is reading when he sees an insect land on the corner of his book. He then makes an eye movement to look at the insect. The structure of the visual system that is most likely responsible for making this eye movement is
A) the superior colliculus.
B) the extrastriate cortex.
C) the optic chiasm.
D) the parietal cortex.

Question

Quizplus · Accepted Answer

The superior colliculus is a structure in the brainstem that is responsible for detecting and directing eye movements towards visual stimuli. Therefore, it is the most likely structure responsible for Chad's eye movement towards the insect on the corner of his book. The other options are not directly involved in directing eye movements towards visual stimuli.

Chad Is Reading When He Sees an Insect Land on the Corner