Biological Psychology Commons^™

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 …

The Effect Of Ethanol And Hypoglycemia On Rat Performance In The Radial Arm Maze, Monica Ann Gaffney

Psychology Theses & Dissertations

Both hypoglycemia (HG) and ethanol (ETH) intoxication can cause serious impairment in physiological and psychological functioning. Their combination could cause more severe cognitive impairment than either condition alone. This experiment investigated the effects of hypoglycemia, ethanol intoxication, and their combination on rat radial arm maze performance. Eleven male rats were trained to a stable, low error rate performance in achieving food rewards in an eight arm radial arm-maze. Rats were then given either insulin (2 units/kg) or saline in combination with ETH doses of 250, 500, 1000, or 1500 mg/kg 20 minutes prior to the maze run. Treatment order was …

Electrocortical Output And Hemispheric Contributions To The Alert State During A Sustained Attention Task, Treven Curtis Pickett

Psychology Theses & Dissertations

This study investigated the relative electrocortical contributions of specified cerebral locations and the potential motoric influence of handedness in a biocybernetic feedback environment. Thirty six right-handed subjects engaged in two sixteen minute trials of a compensatory tracking task by guiding (via a joystick) a circle over a stationary target presented on a computer screen, performing one trial with their preferred (right) and one using their non-preferred (left) hand.

For each subject, a Macintosh computer interpreted electrocortical activity through an engagement index (20*beta/(alpha+theta)) and changed the task mode, i.e. manual (subject guides the task) or automatic (computer guides the task) as …

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 Sch-23390 On Dopamine D1 Receptor Occupancy And Locomotion Produced By Intraaccumbens Cocaine Infusion, Laura O'Dell

Selected Works Temporary Series

No abstract provided.

Time-Dependent Changes In Cocaine-Seeking Behavior And Extracellular Dopamine Levels In The Amygdala During Cocaine Withdrawal, Laura O'Dell

Selected Works Temporary Series

No abstract provided.

Time-Dependent Changes In Cocaine-Seeking Behavior And Extracellular Dopamine Levels In The Amygdala During Cocaine Withdrawal, Laura O'Dell

Departmental Papers (Psych)

No abstract provided.

Effects Of Sch-23390 On Dopamine D1 Receptor Occupancy And Locomotion Produced By Intraaccumbens Cocaine Infusion, Laura O'Dell

Departmental Papers (Psych)

No abstract provided.

Alcohol, Pregnancy And The Developing Child, Sandra J. Kelly

Faculty Publications

No abstract provided.

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 …