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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 196 for “"critical period"”.
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Critical Period for Murine Olfactory Map Formation
… to deprivation of neural activity during the critical period. In the last few decades, the critical period has been studied extensively. These studies are primarily focused on the development of receptive fields in the cortex. Mechanisms regulating the connection between sensory neurons and …
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Adenosine Production Is Essential for Closing the Critical Period of Cortical Plasticity
… begins with early life experiences during the critical period, a brief period during development of heightened sensitivity to sensory stimuli. During this time, organization of cortical maps is plastic and highly subject to change through passive sensory experience. As an animal matures, the …
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Language acquisition after the critical period : a case study of an adolescent with an intellectual disorder
… verbal communication in an adolescent beyond the critical period for language acquisition and the acquisition of the prerequisites necessary for success on conventional tests of mental development. The usefulness of the notion of a critical period for language acquisition is discussed.
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A computational and experimental study of the Drosophila larval locomotor system and its developmental critical period
Critical periods of nervous system development are phases of heightened plasticity during which neuronal network dynamics is adjusted through activity-regulated plasticity mechanisms. Because plasticity is elevated, these phases are also vulnerable, such that disturbances during this highly plastic …
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The Elemental Ideas of Harriet Beecher Stowe Revolutionized: Popular Thought in a Critical Period of American History
Reacting to oppression, and. its consequent cruelty, Harriet Beecher Stowe in 1851 wrote Uncle Tom's Cabin. The novel was a reply to the evils of the slave system. For too long a time, an attitude of heartless submissiveness to slavery was noted in the united States. Sincere citizens of the North …
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Is Adolescence a Critical Period for Learning Thinking Skills? A Case Study Investigating the Development of Formal Thinking Skills in a Short-Term Inquiry-Based Intervention Program
… (girls aged 11-13, boys aged 12-14) is a critical period where students must learn formal thinking skills, similar to the critical period that exists for young children learning languages. It is not known whether it is more difficult for students to learn formal thinking skills either …
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Is Adolescence a Critical Period for Learning Thinking Skills? A Case Study Investigating the Development of Formal Thinking Skills in a Short-Term Inquiry-Based Intervention Program
… (girls aged 11-13, boys aged 12-14) is a critical period where students must learn formal thinking skills, similar to the critical period that exists for young children learning languages. It is not known whether it is more difficult for students to learn formal thinking skills either …
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Cellular and molecular analysis of neuronal structure plasticity in the mammalian cortex
… with the electrophysiologically mapped critical period for development of eye-specific preference in the primary visual cortex. (2) Dark rearing elevates adult levels of expression. (3) A component of cpg15 expression is activity-dependent after the peak of the critical period. (4) At …
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Mechanisms of Estrogen-Dependent Dendrogenesis in Motoneurons of the Spinal Nucleus of the Bulbocavernosus
… estrogens during a developmentally restricted critical period. This estrogen-dependent SNB dendrite growth is mediated by estrogen receptors (ERs) in the SNB target musculature (the bulbocavernosus, BC). I have demonstrated that ERα expression in BC extra-muscle fiber cells defines the critical …
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The Role of Gene Regulation in Neural Circuit Development: Studies in the Zebra Finch
… songbird zebra finch learns to sing in a ""critical period"" in adolescence. Song acquisition and production are controlled by the brain song circuit which consists of auditory and motor pathways. The purpose of this thesis is to study genomic mechanisms underlying zebra finch song circuit …
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Development and plasticity of the functional laminar mesoscale organization of the primary auditory cortex
… particularly relies on sensory input during a critical period of development is the primary auditory cortex (A1). The functional architecture of A1 in adult mammals has been widely studied on a macroscale and single-cell level, and it is evident that this sensory area is characterized by a …
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The effect of age at which enrichment is commenced on the test performance of the white rat
… show equal effects of enrichment after longer periods of deprivation. or whether the effects of deprivation are irreversible. The thesis also investigates whether a critical period for enrichment is in operation in the juvenile phase of a rat's life. Results indicate that no critical period is …
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Early Childhood Bilingual Education: A Curriculum to Teach Kindergarteners in China to Develop Primary Speaking and Listening Skills in English
… children begin to learn English in puberty. Critical period hypothesis (CPH) states there is a critical period of life when language can be acquired more easily, and beyond this time, it is increasingly difficult to acquire a new language. The purpose of this project is to design a curriculum …
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Acuity, Luminance and Monocular Deprivation in the Cat.
Hubel and Wiesel (1970) described a "critical period" in the developing visual system of the cat extending from birth through the first three to four months of life based upon the ocular dominance condition of cortical neurons in monocularly deprived (MD) cats. Monocular deprivation during this …
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Race and Neighborhood SES Differences in the Development Trajectories of Type 1 Diabetes Management of Caucasian and Ethnic Minority Youth
… Adolescence is a particularly difficult period of time for Caucasian youth as they evidence characteristic declines in metabolic control. There is some cross-sectional evidence that racial disparities in pediatric diabetes exist. However, only one study has evaluated racial disparities …
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Aversive Olfactory Imprinting in Caenorhabditis Elegans
… sensory cue presented early in animal's life – a critical period – subsequently gains unique access to ecologically relevant behaviors. Little is known about the molecular and neural underpinnings of imprinting. I have used C. elegans as a model organism to study imprinting because of its compact …
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The Irish Republicanism of Peter C. Yorke of San Francisco 1916-1922
… Irish birth and descent, particularly during the critical period from 1916 to 1922. It is the purpose of this paper to examine the career of an Irish-American priest, Father Peter Christopher Yorke, and to show his influence on the Irish Republican movement in the United States, especially from …
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The effects of a developmental program on the intellectual and social functioning of severely and profoundly retarded children and adults
… concentrated on work with children, but if a critical period for intervention does not exist, adults too could be expected to benefit from training programs. An attempt will also be made to compare the effects of such a program with one providing stimulation without systematic training of any …
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The Link between Overweight, Obesity, and Perceived Exercise Benefits and Barriers among College Students
<p>The transition to college is a critical period in a young adult's life. Education about obesity and physical activity has significant effects on lifetime wellness before graduating and reaching adulthood. The purpose of this study was to examine exercise benefits and barriers of overweight, …
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