Biological Psychology Commons^™

Discounting And Reciprocity In An Iterated Prisoner’S Dilemma, David W. Stephens, Colleen M. Mclinn, Jeffrey R. Stevens

Jeffrey Stevens Publications

The Iterated Prisoner’s Dilemma (IPD) is a central paradigm in the study of animal cooperation. According to the IPD framework, repeated play (repetition) and reciprocity combine to maintain a cooperative equilibrium. However, experimental studies with animals suggest that cooperative behavior in IPDs is unstable, and some have suggested that strong preferences for immediate benefits (that is, temporal discounting) might explain the fragility of cooperative equilibria. We studied the effects of discounting and strategic reciprocity on cooperation in captive blue jays. Our results demonstrate an interaction between discounting and reciprocity. Blue jays show high stable levels of cooperation in treatments with …

Psychophysiological Measures And Performance Effects In An Adaptive Sustained Attention Task, Gerald Alan Hadley

Psychology Theses & Dissertations

This experiment examined the effect of a biocybernetic system that had been successfully used to control an adaptive automation compensatory tracking task (Freeman, Mikulka, Prinzel, & Scerbo, 1999; Pope, Bogart, & Bartolome, 1995). The present study applied this adaptive automation system to a vigilance task. Recordings of EEG activity were used to derive an index of task engagement, beta/(alpha+ theta). A training session was used to establish a baseline level of this index. Index levels above baseline reflected an increase in arousal, while levels below baseline indicated decreased arousal. Three groups (production, reception, and control) performed the task which presented …

The Effect Of Delta-9-Tetrahydrocannabinol (Thc) On Lithium-Induced Sickness Reactions In Both Rats (Rattus Norvegicus) And The House Musk Shrew (Suncus Murinus), Stephen W.P. Kemp

Theses and Dissertations (Comprehensive)

The following experiments examined the ability of delta-9-tetrahydrocannabinol (THC) to attenuate lithium induced sickness in both the nonemetic rat (Rattus norvegicus) and the emetic house musk shrew (Suncus murinus). The ability of THC to attenuate the expression of previously established lithium induced conditioned sickness behavior in Suncus was also examined. Although unconditioned sickness behavior was displayed by both rats and shrews, THC did not attenuate this behavior in either species. However, THC did attenuate conditioned retching in the Suncus murinus. These results are the first to show the attenuation of conditioned sickness in Suncus by THC. They also experimentally verify …

Temporal Response Of The Human Visual System To Suprathreshold Luminance And Opponent Colour Contrast Gratings, Melanie Bucking

Theses and Dissertations (Comprehensive)

The goal of the present study was to characterize the temporal processing of both suprathreshold luminance and opponent-colour defined contrast in the human visual system. We used a detection task in five experiments; following a 900 Hz, 2-cycle tone, observers were presented with a sinusoidal grating stimulus. The interval separating the waming tone and the presentation of the grating was manipulated to determine the influences of attentional dwell time in a cross-modal task. This theory states that the first of two successive events will interfere with the processing of the second event. In all four luminance experiments the gratings were …

The Effect Of Delta9-Tetrahydrocannabinol (Thc) On The Establishment And The Expression Of Place Conditioning (Rattus Norvegicus), Robert Ernest Sorge

Theses and Dissertations (Comprehensive)

The place conditioning paradigm has been used to assess the antinausea potential of drugs in non-emetic animal species. The present experiments were designed to determine the potential of A9-tetrahydrocannabinol (THC) to alleviate both conditioned and unconditioned sickness in rats (Rattus norvegiens). The results in the present study suggest that when the place aversion is strong (Experiment 1), THC may interfere with the establishment; however when the aversion is weak (Experiments 2 and 3), THC may interfere with the expression. Also, when administered during acquisition of a strong amphetamine-induced place preference, THC also seems to interfere with the establishment of the …

Sensitization To Indirect And Direct Dopamine Agonists: Behavioural Differences In Wheel Running, Vanhthong Vilaysinh

Theses and Dissertations (Comprehensive)

Five experiments examined the effects of repeated exposure to stimulants, largely apomorphine (APO), on wheel running in male Sprague-Dawley rats. In these experiments, minor changes in procedure resulted in profound differences in the effects of APO on wheel running. Experiment 1 I compared changes in wheel running after repeated injections of 3.0 mg/kg amphetamine (AMP), 5.0 mg/kg of APO or vehicle (VEH). AMP resulted in a suppression in wheel running which become more pronounced over trials, while running in APO animals remained similar to the VEH group. Testing provided support for a conditioned suppression of wheel running rats previously treated …

The Cardiac Correlates Of Attention In The Denervated Heart: A Study Of Infant Heart Transplant Recipients, Stephanie Dianne Griffone

Loma Linda University Electronic Theses, Dissertations & Projects

The cardiac correlate of attention is a deceleration in heart rate, controlled by the parasympathetic division of the autonomic nervous system. This has been extensively studied in infants; the findings indicate that this deceleration is affected by a number of factors, several mediated by the vagus nerve. However, the effects of denervation on this response are not known. Studies with adult heart transplant recipients have shown attenuated acceleration in response to stressful mental tasks. This study investigated the cardiac response to attention in infants who had received a heart transplant, using a habituation paradigm. The hypothesis that they would show …

Locus Of Control, Coping, And Anticipatory Nausea In Women With Breast Cancer, Melinda L. Nielsen

Loma Linda University Electronic Theses, Dissertations & Projects

Many cancer patients experience adverse chemotherapy-related side effects. The present study examined whether the perception that one can control and effectively cope with her treatment for breast cancer mitigate against any nausea and vomiting that she may experience in anticipation of chemotherapy treatments. Seventy-five women with breast cancer completed the Multidimensional Health Locus of Control Scale - Form C, the Krantz Health Opinion Survey, the Ways of Coping Scale - Revised, and the Morrow Assessment of Nausea and Emesis. As hypothesized, internal health locus of control was significantly positively related to positive reappraisal coping strategies. This relationship was moderated by …

Ultrasonic Vocalizations Of Preweanling Rats The Interaction Of K-Opioid And A₂-Noradrenergic Systems, Arbi Nazarian

Theses Digitization Project

No abstract provided.

Antidepressant Drugs Appear To Enhance Cocaine-Induced Toxicity, Laura O'Dell

Selected Works Temporary Series

No abstract provided.

Molecular Mechanisms Mediating Genetic Sensitivity To Cocaine-Induced Convulsions., Laura O'Dell

Selected Works Temporary Series

No abstract provided.

The Role Of Serotonin2 Receptors In Mediating Cocaine-Induced Convulsions, Laura O'Dell

Selected Works Temporary Series

No abstract provided.

Role Of The Dopamine D₁-Like Receptor In Amphetamine-Induced Behavioral Sensitization: A Study Using Dopamine D₁A-Receptor Deficient Mice, Patrick Eugene Karper

Theses Digitization Project

The ability of the indirect dopamine agonist, amphetamine, to produce behavioral sensitization was assessed in adult D₁A-deficient and wild-type mice. It was originally predicted that : 1) dopamine (DA) D₁-like receptors are necessary for the occurrence of short- and long-term amphetamine-induced behavioral sensitization, 2) DA D₁-like receptors are necessary for environmental conditioning factors associated with amphetamine-induced behavioral sensitiazation, and 3) DA D₅ receptors are required for amphetamine-induced behavioral sensitization. Locomotor activity and sterotyped sniffing were assessed in each of three experiments.

The Role Of Serotonin2 Receptors In Mediating Cocaine-Induced Convulsions, Laura O'Dell

Departmental Papers (Psych)

No abstract provided.

Antidepressant Drugs Appear To Enhance Cocaine-Induced Toxicity, Laura O'Dell

Departmental Papers (Psych)

No abstract provided.

Molecular Mechanisms Mediating Genetic Sensitivity To Cocaine-Induced Convulsions., Laura O'Dell

Departmental Papers (Psych)

No abstract provided.

The Effects Of The Kappa Opioid Agonist U-50,488 On Locomotor Activity Of The Preweanling Rat Following Bilateral Microinjection Into The Substantia Nigra Pars Reticulata And Striatum, Robert Linwood Collins

Theses Digitization Project

No abstract provided.

Behavioral Effects Of Psychomotor Stimulant Infusions Into Amygdaloid Nuclei., Laura O'Dell

Selected Works Temporary Series

No abstract provided.

Serotonin2c Receptors Appear To Mediate Genetic Sensitivity To Cocaine-Induced Convulsions, Laura O'Dell

Selected Works Temporary Series

No abstract provided.

Behavioral Effects Of Psychomotor Stimulant Infusions Into Amygdaloid Nuclei., Laura O'Dell

Departmental Papers (Psych)

No abstract provided.

Serotonin2c Receptors Appear To Mediate Genetic Sensitivity To Cocaine-Induced Convulsions, Laura O'Dell

Departmental Papers (Psych)

No abstract provided.

Ondansetron Interferes With The Establishment And Expression Of Lithium-Induced Conditioned Rejection Reactions, Cheryl Lynn Limebeer

Theses and Dissertations (Comprehensive)

Conditioned rejection reactions displayed in the taste reactivity test may reflect conditioned nausea in rats because they are exclusively produced by emetic agents. The present experiments demonstrated that pretreatment with the anti-nausea agent, ondansetron, interfered with the establishment of conditioned rejection reactions (Experiment 1) and interfered with the expression of previously established conditioned rejection reactions (Experiment 2). Ondansetron selectively interfered with conditioned nausea as reflected by conditioned rejection reactions because it did not modify the unconditioned rejection reactions elicited by unpalatable quinine solution (Experiment 2). Although ondansetron blocked the expression of the selective taste reactivity reaction of conditioned rejection, it …

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.