<prompt> Frontal gyrus lesion leads to?Wernickes aphasiaNominal aphasiaBrocas aphasiaAkinetic mutism  <response>: Frontal gyrus lesion leads to Brocas aphasia. Brocas Area o Lies in dominant inferior frontal gyrus. It is the motor speech area. Stroke of superior branch of MCA leads toBROCAS APHASIA. Wernickes area Lies in dominant posterior pa of superior temporal gyrus. It is a sensory speech area. Nominal aphasia is seen in Metabolic encephalopathy. Akinetic mutism is seen in Frontal lobe lesion. 