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Full-Text Articles in Cognitive Science
Validation Of A Serotonin Depletion Checklist In Parkinson’S Disease, Kelly Diane Darby Holder
Validation Of A Serotonin Depletion Checklist In Parkinson’S Disease, Kelly Diane Darby Holder
Loma Linda University Electronic Theses, Dissertations & Projects
The distinctive pathological marker of Parkinson’s Disease (PD) is the progressive death of neurons that produce dopamine; however, there are also major alterations in the production of quantities of other neurotransmitters, such as norepinephrine and serotonin that contribute to the signs, symptoms, neuropsychological manifestations of the diseases. PD patients can be divided into classes based on the manifestation of motor symptoms, type A, classified as tremor dominant, and type B PD, classified as akinetic. Type B PD patients, often manifest symptoms in which serotonin deficiency plays an important role, such as frontal cognitive impairments, which often includes a history of …
Theta Activity During Navigation In Virtual Environments, Colleen Margaret Moore
Theta Activity During Navigation In Virtual Environments, Colleen Margaret Moore
Psychology Theses & Dissertations
Human navigation has gone through many different stages, from guidance by stars to guidance by technology. Theories for performance differences range from differences between individuals, to experience with the environment. Researchers turn to virtual environments during experimentation which are easy to manipulate and easier to measure during navigation. However, fidelity is an issue with regard to transfer of learning to a real world environment. We examined differences in theta activity during navigation in low and high fidelity virtual environments. The researchers recruited thirty-two students between the ages of 18-40 from the university subject pool for voluntary participation. We measured EEG …