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Full-Text Articles in Biological Psychology

A Psychophysiological Assessment Of The Efficacy Of Event-Related Potentials And Electroencephalogram For Adaptive Task Allocation, Lawrence J. Prinzel Iii Jul 1998

A Psychophysiological Assessment Of The Efficacy Of Event-Related Potentials And Electroencephalogram For Adaptive Task Allocation, Lawrence J. Prinzel Iii

Psychology Theses & Dissertations

The present study was designed to test the efficacy of using Electroencephalogram (EEG) and Event-Related Potentials (ERPs) for making task allocations decisions. Thirty-six participants were randomly assigned to an experimental, yoked, or control group condition. Under the experimental condition, a compensatory tracking task was switched between manual and automatic task modes based upon the participant's EEG. ERPs were also gathered to an auditory, oddball task. Participants in the yoked condition performed the same tasks under the exact sequence of task allocations that participants in the experimental group experienced. The control condition consisted of a random sequence of task allocations that …


Cognitive And Psychophysiological Investigation Of Chronic Pain, Amy D. Clegg Mar 1998

Cognitive And Psychophysiological Investigation Of Chronic Pain, Amy D. Clegg

Loma Linda University Electronic Theses, Dissertations & Projects

Using Bower’s (1981) associative network model of mood and memory, and Klinger’s theory of current concerns, it was hypothesized that the experience of chronic pain may be functionally similar to a mood state and that the chronicity of the condition may maintain it as a current concern. Specifically, it was hypothesized that chronic pain patients would not show any differences in reaction time and accuracy when making lexical decisions about pain-related, neutral, and nonwords. However, it was anticipated that chronic pain patients would show differences in physiological responding (particularly, increased skin conductance responses) when compared to controls. Results confirmed that …


Effects Of Cholinergic And Dopaminergic Drugs On Number And Time Processing In Rats, Romina Coppa Jan 1998

Effects Of Cholinergic And Dopaminergic Drugs On Number And Time Processing In Rats, Romina Coppa

Theses and Dissertations (Comprehensive)

This study describes the effects of cholinergic and dopaminergic drugs on time and number processing by rats. Rats were trained to discriminate discrete sound sequences. On number trials, the duration of the sound sequence was a constant 4 seconds and the number of sounds was 2 or 8. On time trials, the number of sounds was held constant at 4, and the duration of the sound sequence was either 2 or 8 seconds. Psychophysical functions for number and time were obtained by presenting unreinforced sequences of intermediate number and duration. Accuracy of performance was greater with temporal signals than with …