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 103 for “"Psychobiology"”.
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Investigating objective markers of ADHD across development: Micromovements and reaction time variability
… further research aimed at better defining the psychobiology of ADHD are discussed, noting the importance of the micromovement endophenotype in contributing to a broader understanding of the complexity of ADHD.
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Exploring the Pathophysiology of Chronic Depression: The Interplay between Depression, Cortisol Responses, and Personality
… condition. To gain a better understanding of the psychobiology of CMDD, three interconnected studies were conducted that examined the interplay between chronic depression, cortisol responses, and personality. Study 1 examined cortisol responses to the Trier Social Stress Test (TSST) in CMDD …
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Investigating neuroinflammation in schizophrenia: a proton magnetic resonance spectroscopy (1H-MRS) and cytokine study
… There are similarities in the phenomenology and psychobiology of schizophrenia and methamphetamine psychosis, with evidence of alterations in glutamatergic function in both conditions, and of involvement of inflammatory pathways in schizophrenia and methamphetamine abuse. Few studies have …
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Modelling the pathophysiology of schizophrenia and methamphetamine-induced psychosis: A structural magnetic resonance imaging and cytokine study
… There is overlap in the symptomatology and psychobiology of schizophrenia (SCZ) and methamphetamine-induced psychosis (MAP). In schizophrenia there are reports of significant associations of increased severity of psychotic symptoms with thinner frontal cortex and decreased hippocampus and …
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Development of Cardiovascular Indices of Acute Pain Responding in Infants: A Systematic Review and Meta-Analysis
Cardiovascular indices of pain are pervasive in the hospital setting. However, no research has examined the development of cardiac responses to acutely painful procedures in the first year of life. Our main goal was to synthesize evidence regarding the development of cardiovascular responses to …
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Functional Activation Patterns in Pediatric-Onset Multiple Selerosis: Does Physical Activity Play a Role in the Maintenance of Working Memory
Cognitive impairment occurs in only 30% of patients with pediatric-onset multiple sclerosis (POMS), despite significant brain pathology, suggesting that mechanisms facilitating adaptation to pathology may be occurring. We examined executive control processing in 20 cognitively-preserved POMS …
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An Examination Of The Persistence Of Kindling, A Model For Neural Plasticity
The primary purpose of the experiments discussed here was to discover whether kindling is a permanent and stable state or a slowly eroding persistent state. In addition, questions concerning the relationship between retention and seizure generalization, site of stimulation, and stimulus …
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ELECTROENCEPHALOGRAPHIC AND ELECTROMYOGRAPHIC BIOFEEDBACK TRAINING OF OCCIPITAL LOBE THETA RHYTHM
<p>Three biofeedback training methods were used to train human subjects to enhance levels of occipital lobe theta electro-encephalographic rhythms. It was hypothesized that the subject's level of physiological arousal would differentially influence the effectiveness of the training methods. The …
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EFFECTS OF LEUPEPTIN ON AVERSIVELY MOTIVATED SPATIAL MEMORY
<p>Recent evidence indicates that the activation of a calcium-dependent proteinase, calpain, results in the formation of new glutamate receptors in the hippocampus (Lynch, Halpain, & Baudry, 1982), a brain area commonly thought to play a crucial role in mammalian memory formation. In vitro, this …
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Absolute Pitch and the P300: A Neuromusicological Study
The hypothesis has been confirmed. While the rare events presented in the contour and visual tasks do elicit P300's from both AP and RP subjects, the amplitude of the P300 elicited from the AP subjects in the pitch memory task is significantly smaller than that of the controls. There is also a …
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Gender and Menstrual Cycle Effects in Human Spatial Cognition
This hypothesis was supported by evidence from these experiments that, while each gender performs equally well in a fully furnished virtual reality environment, only the performance of women is adversely affected when furnishings are removed. Hormone replacement therapy in elderly women and …
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Use of Inbred Strains for the Study of Individual Differences in Pain Related Phenotypes in the Mouse
A wealth of genotypic and phenotypic information about inbred strains of laboratory mice is being collected and assembled in large databases. Sophisticated mining of this information can be useful in generation of hypotheses regarding the sources and nature of phenotypic variability, both …
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The Representation of Normally-Voiced and Whispered Speech Sounds in the Temporal Aspects of Auditory Nerve Responses
Whispered and normally-voiced speech sounds were encoded by distinct patterns in the AN, when responses of all fibers were included. These common representations support and describe auditory mechanisms for speech perception.
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Estradiol Has Distinct Effects on the Hippocampal and Striatal Memory Systems
Findings from these studies highlight the distinct actions of estradiol in the hippocampus to enhance place learning and in the striatum to impair response learning. By altering the responsiveness of hippocampal and striatal cells to experience, estradiol biases the type of information obtained, …
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The Effects of Lactational and Gestational Exposure to 2,3,7,8-Tetrachlorodibenzo-P-Dioxin or Coplanar PCBs on Spatial Learning and Memory
One way in which rats are able to solve the RAM without employing memory systems is by using a response strategy. The most obvious response strategy that would yield better performance on the RAM is adjacent arm selection. A final study was conducted, in which TCDD-exposed animals were tested on …
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Reinforcement Learning and the Error -Related Negativity: A Computational and Neurophysiological Investigation
"This thesis presents a unified account of two neural systems concerned with the development and expression of adaptive behaviors: a mesencephalic dopamine system for reinforcement learning, and a ""generic"" error-processing system associated with anterior cingulate cortex. The existence of the …
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Neuropsychological and Psychosocial Predictors of Children's Depression
The role of regional brain activity, children's perceptions of mother-child relationships, perceptions of interparental conflict, and reports of family-related stress in predicting symptoms of depression, aggression, and anxiety were examined in 624 5th and 6th graders. Perceptual asymmetry on a …
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Structure of the Rat Medial Prefrontal Cortex Is Influenced by Sex Across the Lifespan
The development and aging of sex differences in the volume, neuron number and glial cell number in the mPFC, as well as frontal white matter volume, were also examined in both sexes using unbiased stereological techniques. Ventral rat mPFC gray matter volume increased prior to puberty and then …
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Great (Syntactic) Expectations: Multiple Structures and the Case for Parallelism in Language Processing
Event-related brain potentials (ERPs) are used to address a controversial issue in language-processing research, namely whether the parser proposes more than one possibility for how a sentence will continue. Relatively little research has used ERPs to answer this question, and previous studies have …
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