Final answer:
Perceptual regions, also known as vernacular regions, are regions that are perceived differently by different individuals or groups based on their opinions, beliefs, and cultural backgrounds.
Step-by-step explanation:
Perceptual regions, also known as vernacular regions, are regions that are perceived differently by different individuals or groups based on their opinions, beliefs, and cultural backgrounds. These regions have loosely defined boundaries and can be fluid, with different people having different ideas about the limits of the regions. For example, the Middle East and Midwest in the United States are examples of vernacular or perceptual regions where people may have varying perceptions of their boundaries.