Theoretical phonology has at its heart the assumption of two separate levels of speech sound representations: one less abstract, phonetic, 'surface' level, and one more abstract, phonological, 'underlying' level. Descriptions of phonological neutralisation processes such as German final devoicing hinge on the mappings between these two levels, as…

This dissertation investigates the neural bases and development of displacement, which is a language property that allows us to communicate about situations outside the "here-and-now." One way to displace from our immediate environment is to project ourselves into the here-and-now point of an alternative actuality. Another form of…

In everyday life, humans rely on working memory (WM) processes to make sense of relationships between linguistic elements that are not linearly adjacent. For example, to understand the sentence "The dog that the cat chased is cute," we encode the referent "the dog" into WM, maintain and retrieve it after reading the verb…

Reading is a fascinating cognitive process through which individuals perceive arbitrary symbols on a page and turn them into vivid mental representations of text. Most available evidence supports an embodied explanation for how readers are capable of such representations--they recruit supralinguistic brain regions in order to mentally simulate the…

Due in part to its complex nature, there is still much to uncover in the investigation of the neural processes that contribute to synchronization between speakers and listeners during communication in the context of social cognition, specifically between native and nonnative English speakers and listeners. This study used a novel method of…

Traumatic brain injuries (TBIs) are heterogeneous in nature and commonly result in deficits to multiple areas of cognition including memory, linguistic processing, and executive functioning. For individuals with TBI, returning to everyday activities can be a challenge with their quality of life reduced by a variety of impairments including…

My primary goal is to assess whether, and in what sense, the rules or principles of grammar are psychologically real. I begin by casting doubt on a received view in generative linguistics, according to which a true theory of the syntax of natural language would, ipso facto, be a theory of a psychological state or mechanism. I argue that a…

This thesis explores how predictions about upcoming language inputs are computed during real-time language comprehension. Previous research has demonstrated humans' ability to use rich contextual information to compute linguistic prediction during real-time language comprehension, and it has been widely assumed that contextual information can…

In our increasingly multicultural and multilingual world, an understanding of how we perceive language, dialects, and linguistic variation and the relationship these features have to language attitude, plays an increasingly important role in shaping social behavior and policy. This study, situated at the intersection of cognitive neuroscience,…

The goal of this dissertation is to examine how brain regions respond to different types of competition during word comprehension and word production. I will present three studies that attempt to enhance the current understanding of which brain regions are sensitive to different aspects of competition and how the nature of the stimuli and the…

This project examines spoken language comprehension in Broca's aphasia, a non-fluent language disorder acquired subsequent to stroke. Broca's aphasics demonstrate impaired comprehension for complex sentence constructions. To account for this deficit, one current processing theory claims that Broca's patients retain intrinsic linguistic knowledge,…

Computational natural language understanding and generation have been a goal of artificial intelligence since McCarthy, Minsky, Rochester and Shannon first proposed to spend the summer of 1956 studying this and related problems. Although statistical approaches dominate current natural language applications, two current research trends bring…

Normal language comprehension requires contributions from and cooperation of many parts of the brain, ranging from sensory areas that receive the initial physical input, through frontal and temporal areas associated with oft-characterized language subprocesses, to brain areas involved in perspective-taking and social cognition; thus a network of…