Which option best describes the role of the frontal eye fields (FEF)?

• A. Regulation of pupillary size
• B. Initiation and control of voluntary saccadic eye movements and attention-related saccades
• C. Modulation of color perception
• D. Control of accommodation

Answer: (B)

Frontal eye fields are specialized for planning and initiating voluntary eye movements and for guiding attention to a chosen location. When you decide to look somewhere or shift your attention, the FEF help generate the corresponding saccade by influencing downstream circuits in the superior colliculus and brainstem saccade generators. This role is distinct from autonomic pupil control, color processing, or accommodation, which involve other brain regions and pathways. So the best description is that the frontal eye fields initiate and control voluntary saccadic eye movements and attention-related saccades.