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Alterations In Neurogenesis Following The Transition From Virgin To Maternal/Lactating Female, Elizabeth Amory
Alterations In Neurogenesis Following The Transition From Virgin To Maternal/Lactating Female, Elizabeth Amory
Master's Theses
The hippocampus displays hormone induced plasticity during estrus. Pregnancy, which exposes a female to a significantly longer duration of elevated estrogen and progesterone, results in even greater changes in neurons in the CA1 region of the hippocampus, with late-pregnant and lactating females displaying a significantly higher concentration of apical dendritic spines. Hippocampal astrocytes were increased in number and showed more and thicker processes in late-pregnant and lactating females. Such anatomical changes may also enhance spatial learning and memory. Changes in reproductive capacity may influence the rate at which new neurons are born, so called neurogenesis. In two experiments, neurogenesis in …
Reproductive Experience And Stress Responsiveness, Jennifer Elizabeth Wartella
Reproductive Experience And Stress Responsiveness, Jennifer Elizabeth Wartella
Master's Theses
Hormonal fluctuations and maternal behavior associated with pregnancy and postpartum care of pups induce many changes in the female rat. Circulating hormonal surges during pregnancy modify the female brain in preparation for motherhood. Past studies identify the medial preoptic area, the hypothalamus and the basal forebrain as structures dense in hormonal receptors involved in controlling reproductive behavior. The hippocampus and amygdala possess many hormonal receptors. Neurons exposed to pregnancy hormones develop new synapses and increased spine density, changes reflected in behavioral preparations, such as nest building and increased foraging, for the new pups. Following the experience of birth, pup stimulation …
Attention, Memory, And Self-Efficacy Differences Between Adhd And Aging Individuals, Douglas Lee Welsh
Attention, Memory, And Self-Efficacy Differences Between Adhd And Aging Individuals, Douglas Lee Welsh
Master's Theses
Attention and memory abilities decline with age. Although a similar pattern of attentional and memory decrement has been observed in individuals with Attention Deficit Hyperactivity Disorder (ADHD), these two populations have never been directly compared. The present study examined performance on attention, self-efficacy (SE), and memory tasks by ADHD young adults and non-ADHD younger and older adults. ADHD adults displayed lower attentional SE than both non-ADHD younger and older adults, but performed comparably to older adults on an attention task on which non-ADHD younger adults outperformed both groups. ADHD adults and older adults had lower memory SE than non-AD HD …