Question
Which part of the brain is involved in scanning the visual field?
Show Answer
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Correct Answer � A
Explanation
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– Region A is the frontal eye field (FEF) in the posterior middle frontal gyrus, near Brodmann area 8.
– The FEF is vital for voluntary eye movements, especially saccadic scanning of the visual field.
– It controls conjugate eye movements, mainly horizontal gaze.
– Active during visual attention, target tracking, and rapid scanning tasks.
– Lesions cause eyes to deviate toward the lesion and impair gaze to the opposite side.
Why other options are incorrect:
– B (Parietal lobe) processes spatial attention & touch.
– C (Temporal lobe) handles object recognition, memory, and auditory processing.
– D (Occipital lobe) processes visual input but does not initiate eye movements.
