Final answer:
The Superior Temporal Sulcus (STS) is chiefly involved in social perception, with roles in interpreting social cues and understanding behavior. The generation of motor commands, on the other hand, is not within the purview of the STS but is instead a function of the frontal lobe's primary motor cortex, not mentioned in the provided answers.
Step-by-step explanation:
The Superior Temporal Sulcus (STS) is implicated in various cognitive functions, among which social perception is particularly notable. The STS plays a key role in interpreting human behavior and intentions, which includes understanding body language, reading facial expressions, and perceiving gaze direction among others. Conversely, the medial temporal lobe is known for its involvement in memory processes; the ventromedial prefrontal cortex is associated with emotional regulation and decision-making; the superior temporal gyrus, a part of the temporal lobe, is recognized for its role in language and auditory processing; and finally, the postcentral gyrus is involved in processing somatosensory information, not motor control.
Moving to motor functions, the generation of motor commands is a responsibility of the frontal lobe, specifically the primary motor cortex, which is not explicitly listed in the answers provided. This can sometimes lead to confusion with the postcentral gyrus of the parietal lobe, instrumental in processing sensory information, not in motor control. Additionally, considering the cerebral cortex regions and language, understanding of language is closely tied to the temporal lobe, as it includes regions like Wernicke's area crucial for language comprehension.
Therefore, based on provided options, the final answer regarding the responsibility of the STS is c) Social perception, as it is involved with various aspects of social interactions and reading social stimuli. As for motor commands, the frontal lobe, not listed among the answers, is the correct region of the cerebral cortex in charge of motor function generation, but from the given options, none are correct as they refer to other lobes and regions.