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Full-Text Articles in Social and Behavioral Sciences
An Erp Investigation Of Hand-Based Bias On Visual Attention, John Philip Garza
An Erp Investigation Of Hand-Based Bias On Visual Attention, John Philip Garza
Electronic Theses and Dissertations
Recent behavioral studies have investigated the importance of hand and arm position in visual attentional processes. Reed et al. (2006) found facilitated (faster) detection for targets that appear in the space near the hand, relative to targets appearing on the opposite side of a monitor display. The current study aimed to explore the potential bottom-up and top-down neural sources underlying this hand-bias effect on attention with ERP. Using a standard, non-predictive visual cuing paradigm, we examined early (N1, P1) and later (P3) ERP components in response target presentations in three conditions: with the non-responding hand resting on the table (Resting), …
Graphical Perception Of Nonlinear Trends: Discrimination And Extrapolation, Lisa A. Best
Graphical Perception Of Nonlinear Trends: Discrimination And Extrapolation, Lisa A. Best
Electronic Theses and Dissertations
This dissertation investigated several factors involved in the perception of nonlinear relationships in time series graphs. To model real-world data sets, the graphed data included different sample sizes and levels of variability, and represented different underlying trends. Graph format was also varied. The purpose of the experiments was to determine how these factors affect both trend discrimination and extrapolation accuracy, with the overall goal of determining what types of graphs are optimal in different situations. In Experiment 1, subjects viewed time series graphs on a computer screen and had to identify the type of trend that was present. Six trends …