Global ETD Search
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 21 for “"Sensitive Periods"”.
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Sensitive Periods for the Effects of Childhood Maltreatment on Functional Connectivity in Cognitive Control and Risk Processing Systems
… how abuse and neglect across three developmental periods (early childhood, school age, and adolescence) are associated with longitudinal changes in task-based functional connectivity during risk-processing and cognitive control. The current sample included 167 adolescents (13-14 years old at Time …
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Sensitive periods for second language acquisition: A reaction time study of the syntactic processing of English by Korean-English bilinguals
… Thus a hypothesis was proposed that there 1s a sensitive period for attaining native-like speed in language processing which ends before the age of three. Evidence was also round for the maturational effect that resulted in a decrease of language processing speed as the age of onset for the L2 …
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The Sensitive Period for Second-Language Acquisition: A Reaction-Time Study of Maturational Effects on the Acquisition of L2 Lexico-Semantic and Syntactic Systems
… the findings from both experiments suggest that sensitive periods for L2 acquisition are involved both in lexico-semantics and in syntax, and that the exact nature of the effects of the sensitive periods may be different, depending upon the linguistic component and the task under examination. …
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Differential Effects of Individual Factors on the Developmental Pathways of Depression
… approach that included two developmentally sensitive periods, four distinct trajectories of depressive symptoms, and a unique pattern of risk and protective factors within these trajectories were found. Study findings can inform individualized prevention and intervention initiatives by …
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Differential moisture sensitivity in the life cycle of selected vegetable crop
… of previously reported results on moisture-sensitive periods in the plant-life cycle that the research described herein was carried out at the University of Saskatchewan, Saskatoon.
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Developmental Monoamine Signaling Impacts Adult Affective and Aggressive Behaviors
… vulnerability is often restricted to sensitive periods. The concept of sensitive developmental periods for the indelible modulation of complex behaviors is similar to that described for sensory systems (e.g. visual cortex, ocular dominance plasticity), but effected behaviors, …
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The Effect of Neighborhood and School Contexts During Early and Late Adolescence On Racial Disparities In Body Mass Index and Depressive Symptoms Among Students Attending Selective Universities
… at all. Though, findings indicate that there are sensitive periods (i.e. early or late adolescence) in which exposure to predominantly-minority neighborhoods or schools are associated with higher BMI and exposure to school disorder and violence is associated with higher levels of depressive …
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Maternal diet and programming of embryo and fetal development in the mouse
… programmed). This is due to the existence of sensitive periods which are brief windows of growth and development in early life during which there is an increased susceptibility to programming influences (Barker, 1999). Under-nutrition (or other adverse influences) occurring during fetal life …
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Neuropsychological Outcome In Relation To Duration Of Early Orphanage Experience
… working memory. These results may demonstrate a sensitive period in language development for children with a history of institutional care that occurs around approximately two years of age.</p>
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Human response to railway vibration in residential environments : exposure-response relationships and modifying factors
… evening and night-time being the most sensitive periods. The additionalannoyance is equivalent to 17 dB for the night and 8 dB for the evening for a rms Wks\ of 0.01 m/s in the day. The relation between activity disturbance and exposuresuggests that sleeping and resting are the …
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An integrative analysis of the multi- and transgenerational effects of endocrine-disrupting chemicals on behavior and neurobiology
… hormone action. Exposure to EDCs during hormone-sensitive periods of prenatal development can result in disease and dysfunction later in life. Furthermore, EDC effects have been reported in individuals several generations removed from the initial exposure. In this dissertation, I investigated the …
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PERINATAL SEROTONERGIC MANIPULATION SHAPES LONG-TERM NEUROPSYCHIATRIC-LIKE PHENOTYPES IN RATS: MOLECULAR INSIGHTS ACROSS THE LIFESPAN.
… perineuronali (PNNs), regolatori chiave dei “sensitive periods”. Abbiamo osservato cambiamenti nella densità e nell’intensità delle cellule PV+ e a livello delle PNNs nella PFC e nell’ ippocampo, che variano in base al sesso, al periodo di esposizione alla FLX e alla regione cerebrale. …
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Variation in postpartum maternal care programs the development of neuroendocrine and mesolimbic dopamine pathways in female offspring
… care. Furthermore, this research reveals sensitive periods during postnatal development for maternal LG to affect gene expression and onset of maternal behavior in juvenile offspring. The mesolimbic dopamine system is also critically implicated in adult maternal behaviors, and was …
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The Effects of Toluene on the Ontogenetic Development of the Fish, Oryzias latipes, the Japanese Medaka
… development exposed to the chemical for periods of 24-hrs, 48-hrs, and 96-hrs. The TL 50 values were also obtained for embryos at the time of hatching of the eggs and at the time of the absorption of the yolk’s oil droplet, one week after hatching. The mortality effects of toluene to …
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Manipulation and characterization of proopiomelanocortin (POMC) neurons in the hypothalamic regulation of energy balance
… described here could provide insight into sensitive periods that are more amenable to manipulating POMC neurons. The work in Chapter 4 also shows that glutamate release from POMC neurons is involved in regulating body weight in a sex- and diet-specific manner, which is the first documented …
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The response of field bean (Vicia faba L.) to irrigation and sowing date
… evidence supporting the existence of 'moisture sensitive periods' during flowering or any other phase of development in field beans. Harvest index was stable within either autumn (0.48) or spring (0.35) sowings. Irrigation therefore increased grain yield by increasing total dry matter (TDM) …
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LONG-LASTING MOLECULAR ALTERATIONS FOLLOWING EARLY LIFE STRESS IN RATS: ROLE OF GUT MICROBIOTA AND INFLAMMATION
… such as pregnancy and adolescence, represent key sensitive periods for brain development. Several studies in animal models have been carried out to understand the mechanisms underlying the negative outcomes associated with early adverse exposures. The presence of a chronic low-grade inflammatory …
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Developmental burden of childhood adversity: Insight from longitudinal perspectives
… in which they co-occurred. Regardless, sensitive periods (timing of adversity exposure) explained more variability in these observed effects compared to accumulation hypothesis. In study 3, I analysed a subset of IMAGEN cohort sample (N = 502) using latent change score model and complete …
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THE OMEGA-6: OMEGA-3 FATTY ACID RATIO IN SWINE NUTRITION: LONG-TERM EFFECTS ON PERFORMANCE, MILK FATTY ACID PROFILES, OXIDATIVE STATUS, AND PROTEOMES
… regulators of pig performance and health over sensitive periods were revealed. These can be used as the basis of future studies to understand how nutrition programs can be enhanced to improve the quality and safety of animal products for human consumption.
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Parent Emotion Regulation, Dyadic Interaction, and Physiological Regulation as Predictors of Child Emotion Regulation in the Context of ADHD Symptomatology
… These findings may suggest that there are more sensitive periods for children when it comes to emotion regulation and the role of parent behaviors and characteristics. Studying how parent ADHD symptomatology predicts child emotion regulation outcomes is crucial to supporting both children and …
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