Which of the following is NOT a major function of the Frontal Lobe?

• A. Production of speech
• B. Ipsilateral pursuits
• C. Contralateral saccades
• D. Planning of motor activities

Answer: (B)

The frontal lobe is crucial for planning and initiating voluntary movements, coordinating complex motor sequences, and handling language production in the dominant hemisphere, with specific regions like Broca’s area underpinning speech. It also contains the frontal eye fields that drive purposeful eye movements, directing gaze to the opposite side. Planning motor activities relies on the premotor and supplementary motor areas within the frontal lobe.

Contralateral saccades are a classic frontal-lobe function because the frontal eye fields initiate rapid eye movements toward the opposite side. Smooth pursuit and tracking movements, while involving several networks, rely heavily on parietal and cerebellar circuits and tend to be bilateral rather than dominated by the frontal lobe on the ipsilateral side.

Thus, the statement describing ipsilateral pursuits is not a major frontal-lobe function.