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The Embodied Mind In Early Development: Sitting Postural Control And Visual Attention In Infants With Typical Development And Infants With Delays, Regina T. Harbourne

College of Education and Human Sciences: Dissertations, Theses, and Student Research

As infants learn to sit between the ages of 5 and 8 months, they undergo many changes in their bodies as well as in their minds, creating conditions for the emergence of skills that allow greater interaction with their environment. The present study focused on the interaction of developing postural control in sitting with cognition, exemplifying the concept of the embodied mind. Look time, or the time an infant looks at an object, served as a proxy for the construct of cognitive processing. Three experiments examined developmental changes in sitting postural control and looking. The first experiment examined archival data …

Developmental Emergence Of Power-Law Wake Behavior Depends Upon The Functional Integrity Of The Locus Coeruleus, Andrew J. Gall, Badal Joshi, Janet Best, Virginia R. Florang, Jonathan A. Doorn, Mark S. Blumberg

Faculty Publications

STUDY OBJECTIVES:

Daily amounts of sleep and wakefulness are accumulated in discrete bouts that exhibit distinct statistical properties. In adult mammals, sleep bout durations follow an exponential distribution whereas wake bout durations follow a power-law distribution. In infant Norway rats, however, wake bouts initially follow an exponential distribution and only transition to a power-law distribution beginning around postnatal day 15 (P15). Here we test the hypothesis that the locus coeruleus (LC), one of several wake-active nuclei in the brainstem, contributes to this developmental transition.

DESIGN:

At P7, rats were injected subcutaneously with saline or DSP-4, a neurotoxin that targets noradrenergic …

Behavioral And Neural Representation Of Emotional Facial Expressions Across The Lifespan, Leah Somerville, Fani Negar, Erin Tone

Psychology Faculty Publications

Humans’ experience of emotion and comprehension of affective cues varies substantially across the lifespan. Work in cognitive and affective neuroscience has begun to characterize behavioral and neural responses to emotional cues that systematically change with age. This review examines work to date characterizing the maturation of facial expression comprehension, and dynamic changes in amygdala recruitment from early childhood through late adulthood while viewing facial expressions of emotion. Recent neuroimaging work has tested amygdala and prefrontal engagement in experimental paradigms mimicking real aspects of social interactions, which we highlight briefly, along with considerations for future research.

Atypical Language Lateralization In Epilepsy Patients, Gabriel Möddel, Tara T. Lineweaver, Stephan U. Schuele, Julia Reinholz, T. Loddenkemper

Scholarship and Professional Work - LAS

Purpose:  To investigate whether atypical language dominance in epilepsy patients is related to localization and type of lesions.

Methods:  Four hundred and forty-five epilepsy patients received bilateral Wada testing. Language was classified as left (L), right (R), bilateral-dependent (BD, speech arrest after left and right injections), or bilateral-independent (BI, no speech arrest after either injection). Groups were compared regarding handedness and magnetic resonance imaging (MRI) lesions. Lesions were classified as “early” (congenital), “late” neocortical (acquired after birth), and hippocampal sclerosis (HS).

Results:  Of all patients, 78% were L, 6% R, 7% BD, and 9% BI. Right-handers with left lesions did …