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Functional Neuroimaging Studies of Simple Finger Movements in Healthy Development and Aging and in Children with Dyslexia
(Georgetown University, 2017)
The functional neuroanatomy of the motor system underlying finger movements has been thoroughly elucidated in young adults. However, less is known about this system at younger and older ages, and in disorders. This ...
THE NEURAL SUBSTRATES UNDERLYING BOTH SPELLING AND READING
(Georgetown University, 2012)
Written language forms a cornerstone of human communication and understanding. In order to understand why written language can be used skillfully by some and not by others, it is important to investigate the neural basis ...
DOPAMINE-REGULATING GENES, EXECUTIVE CONTROL, AND THE NETWORK STRUCTURE OF THE HUMAN BRAIN
(Georgetown University, 2013)
Executive control processes, including working memory (WM), attention, and impulse control, rely on brain networks centered in the prefrontal cortex, and especially on dopaminergic signaling in these networks. The function ...
NEURAL COMPUTATIONS UNDERLYING SPEECH RECOGNITION IN THE HUMAN AUDITORY SYSTEM
(Georgetown University, 2011)
Current theories of speech perception in the human brain propose two separate, hierarchically organized cortical processing streams, a ventral and a dorsal stream. The ventral stream is generally believed to mediate acoustic ...
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 ...
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 ...
Multimodal Evidence for Neurocognitive Alterations in Pediatric Obesity
(Georgetown University, 2021)
Pediatric obesity is increasing in prevalence and severity in the United States, with one in five adolescents meeting criteria for overweight (body mass index; BMI for age and sex >85th percentile) and one in three meeting ...
Investigating the Neurofunctional Bases of Reading in the Spanish-English Bilingual Brain
(Georgetown University, 2019)
Dual-language use from early stages in life is the experience of over half of the world’s population. This experience is becoming more prevalent worldwide, even in countries that predominantly use one language as the ...
Functional Neuroanatomy of Arithmetic in Bilinguals
(Georgetown University, 2020)
Despite the prevalence of bilingualism worldwide, the effect of using multiple languages on the cognitive process of math is only just beginning to be understood. Arithmetic in particular draws on linguistic representations ...
Language System Plasticity in Healthy Development and After Perinatal Stroke
(Georgetown University, 2022)
Language processing is an extremely important, uniquely human cognitive ability. For well over a century, researchers have sought to understand how the human brain implements a system for instantaneously recognizing and ...