Which side of the brain is primarily involved with lexical signs?

The left hemisphere of the brain is primarily involved with lexical signs, which are the signs that convey specific meanings, much like vocabulary in spoken language. This hemisphere is associated with language processing and is crucial for tasks involving syntax and semantics. In individuals who use sign language, research has shown that areas analogous to those in which spoken language processing occurs (such as Broca's area for production and Wernicke's area for comprehension) are also activated when processing sign language.

This lateralization reflects the brain’s organization where the left hemisphere specializes in language acquisition, use, and comprehension, regardless of whether that language is spoken or signed. Consequently, when focusing on lexical signs, it is evident that the left hemisphere plays a vital role, highlighting its importance for individuals who are Deaf or Hard-of-Hearing in comprehending and producing meaningful signs.