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The Acquisition of Productive Rules in Child and Adult Language Learners
(Georgetown University, 2017)
In natural language, evidence suggests that, while some rules are productive (regular), applying broadly to new words, others are restricted to a specific set of lexical items (irregular). Further, the literature suggests ...
Interaction of Attention and Emotion Across Development and Disorder
(Georgetown University, 2012)
This dissertation examines how attention and emotion interact in early visual processing across typical development and in Attention Deficit/Hyperactivity Disorder (ADHD). To investigate early visual processing, we utilized ...
Word recognition in auditory cortex
(Georgetown University, 2013)
Although spoken word recognition is more fundamental to human communication than text recognition, knowledge of word-processing in auditory cortex is comparatively impoverished. This dissertation synthesizes current models ...
An Investigation of Working Memory: Influences of COMT, Sex, and Urbanicity on Cognitive Performance and Neuroimaging Measures
(Georgetown University, 2014)
Working memory is involved in numerous areas of cognition. It has been studied using various tasks, in which cognitive performance and brain activation have been measured. Working memory depends largely on dopamine ...
The Effects of Extensive Single Task and Dual Task Training on the Neural Bases of Visual Object Categorization: Escaping the Frontal Bottleneck
(Georgetown University, 2017)
Perceptual learning of visual categorization has been described as a two-stage model, wherein the tuning of representations in visual areas is sharpened to the physical attributes of the stimuli and dorsolateral prefrontal ...
The Relationship Between the Perception of Unexpected Harmonic Events and Preference in Music
(Georgetown University, 2018)
Music cognition researchers have proposed a relationship between the perception of unexpected harmonic events and preference in music. The brain strategies underlying this relationship, however, have not been substantially ...
Investigating the Relationship between Long Chain Omega-3 Fatty Acids and Prefrontal Cortex Development during Adolescence
(Georgetown University, 2017)
Delivery of building blocks essential for brain development is critical for the normal development of the brain and behavior. Omega-3 (N3) fatty acids are essential nutrients, which can only be obtained from the diet. ...
Genetic Influences of Dopamine and GABA on Adolescent Cognition
(Georgetown University, 2018)
Adolescence is a time of exploration, but also risk taking, such as alcohol use. What places individuals’ at risk has not been fully elucidated. Twin studies of adult alcohol use disorders (AUD’s) found genetics account ...
The Role of the Motor System in Speech Perception and the Neural Substrates of Audiovisual Speech Integration
(Georgetown University, 2019)
Perceiving and comprehending spoken language is a complex process, but for most of us, it is something we do effortlessly. How does the brain transform the acoustic and visual signals of speech into meaningful percepts? ...
Adolescent Neurocognitive Maturity Mediates Paths to Altered Social Norms and Vulnerability in Emerging Adulthood
(Georgetown University, 2020)
The transitional period between adolescence and adulthood is a high-risk period for social strain and adversity leading to experiences of violence and altered normative civic beliefs. In this dissertation, I examine cognitive ...