Focal seizures with "tingling" sensations in the face most likely originate in which part of the brain?

Focal seizures characterized by "tingling" sensations in the face typically indicate cortical involvement that correlates with sensory processing within the brain. The region known as the inferior post-central gyrus is particularly relevant because it maps sensory input from the face and head area. This part of the brain is located in the parietal lobe, which houses the somatosensory cortex responsible for perceiving sensations like touch and pain.

During a focal seizure originating in the inferior post-central gyrus, electrical disturbances in this region can lead to abnormal sensations such as tingling or paresthesia, specifically in the face. This is due to the somatotopic organization of the sensory cortex, where different areas correspond to sensory inputs from various body parts.

In contrast, the other areas listed, such as the superior post-central gyrus, frontal lobe, and temporal lobe, are not primarily responsible for processing facial sensation in the same direct manner. The superior post-central gyrus generally processes sensory information from the upper body and limbs, while the frontal lobe is involved in planning and motor functions, and the temporal lobe plays a significant role in auditory processing and memory but not directly in facial sensation.