The field of neuroscience of multilingualism investigates the neural mechanisms underlying the ability to speak multiple languages. Some possible synonyms for this term include cognitive neuroscience of language, the neuroscience of bilingualism, and language acquisition and processing. These terms all describe the study of how the brain processes and represents language, particularly in individuals who are fluent in more than one language. Researchers in this field aim to understand the cognitive and neural processes that underlie language learning, production, and comprehension, as well as how language use affects brain function and structure. Ultimately, this research has practical implications for language education and cross-cultural communication.