What term refers to the localization of a function to one side of the brain?

• A. Hemispheric specialization
• B. Lateralization
• C. Localization
• D. Contralaterality

Answer: (B)

Lateralization describes the localization of a function to one side of the brain. It captures the idea that certain abilities are more strongly represented or carried out by one hemisphere than the other, leading to asymmetrical brain organization. This helps explain why language tends to be left-dominant for many people and some spatial or attentional tasks rely more on the right hemisphere. It’s distinct from localization, which focuses on a specific brain area, and from contralaterality, which describes the crossing of control or sensation to the opposite side of the body. Hemispheric specialization is closely related, but lateralization specifically emphasizes the side-by-side dominance across the two hemispheres.