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Articles 361 - 390 of 415

Full-Text Articles in Biological Psychology

Diminished Nicotine Withdrawal In Adolescent Rats: Implications For Vulnerability To Addiction, Laura O'Dell Jan 2006

Diminished Nicotine Withdrawal In Adolescent Rats: Implications For Vulnerability To Addiction, Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


Extraocular Muscle Activity, Rapid Eye Movements And The Development Of Active And Quiet Sleep, Adele M. H. Seelke, Andrew J. Gall, Karl Æ. Karlsson, Mark S. Blumberg Aug 2005

Extraocular Muscle Activity, Rapid Eye Movements And The Development Of Active And Quiet Sleep, Adele M. H. Seelke, Andrew J. Gall, Karl Æ. Karlsson, Mark S. Blumberg

Faculty Publications

Rapid eye movements (REMs), traditionally measured using the electrooculogram (EOG), help to characterize active sleep in adults. In early infancy, however, they are not clearly expressed. Here we measured extraocular muscle activity in infant rats at 3 days of age (P3), P8 and P14-15 in order to assess the ontogeny of REMs and their relationship with other forms of sleep-related phasic activity. We found that the causal relationship between extraocular muscle twitches and REMs strengthened during the first two postnatal weeks, reflecting increased control of the extraocular muscles over eye movements. As early as P3, however, phasic bursts of extraocular …


The Neural Substrates Of Infant Sleep In Rats, Karl Æ. Karlsson, Andrew J. Gall, Ethan J. Mohns, Adele M. H. Seelke, Mark S. Blumberg Apr 2005

The Neural Substrates Of Infant Sleep In Rats, Karl Æ. Karlsson, Andrew J. Gall, Ethan J. Mohns, Adele M. H. Seelke, Mark S. Blumberg

Faculty Publications

Sleep is a poorly understood behavior that predominates during infancy but is studied almost exclusively in adults. One perceived impediment to investigations of sleep early in ontogeny is the absence of state-dependent neocortical activity. Nonetheless, in infant rats, sleep is reliably characterized by the presence of tonic (i.e., muscle atonia) and phasic (i.e., myoclonic twitching) components; the neural circuitry underlying these components, however, is unknown. Recently, we described a medullary inhibitory area (MIA) in week-old rats that is necessary but not sufficient for the normal expression of atonia. Here we report that the infant MIA receives projections from areas containing …


Epipregnanolone And A Novel Synthetic Neuroactive Steroid Reduce Reduce Alcohol Self-Administration In Rats., Laura O'Dell Jan 2005

Epipregnanolone And A Novel Synthetic Neuroactive Steroid Reduce Reduce Alcohol Self-Administration In Rats., Laura O'Dell

Selected Works Temporary Series

No abstract provided.


Stress Enhancement Of Craving During Sobriety: A Risk For Relapse, Laura O'Dell Jan 2005

Stress Enhancement Of Craving During Sobriety: A Risk For Relapse, Laura O'Dell

Selected Works Temporary Series

No abstract provided.


Stress Enhancement Of Craving During Sobriety: A Risk For Relapse, Laura O'Dell Jan 2005

Stress Enhancement Of Craving During Sobriety: A Risk For Relapse, Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


Epipregnanolone And A Novel Synthetic Neuroactive Steroid Reduce Reduce Alcohol Self-Administration In Rats., Laura O'Dell Jan 2005

Epipregnanolone And A Novel Synthetic Neuroactive Steroid Reduce Reduce Alcohol Self-Administration In Rats., Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


Event-Related Potential Evidence For Multiple Causes Of The Revelation Effect, P. Andrew Leynes, Joshua Landau, Jessica Walker, Richard J. Addante Oct 2004

Event-Related Potential Evidence For Multiple Causes Of The Revelation Effect, P. Andrew Leynes, Joshua Landau, Jessica Walker, Richard J. Addante

Psychology Faculty Publications

Asking people to discover the identity of a recognition test probe immediately before making a recognition judgment increases the probability of an old judgment. To inform theories of this “revelation effect,” event-related potentials (ERPs) were recorded for revealed and intact test items across two experiments. In Experiment 1, we used a revelation effect paradigm where half of the test probes were presented as anagrams (i.e., a related task) and the other items were presented intact. The pattern of ERP results from this experiment suggested that revealing an item decreases initial familiarity levels and caused the revealed items to elicit similar …


Examining Multisystem Coordination In Response To Stressors In Early Childhood, Tiffany Phu Aug 2004

Examining Multisystem Coordination In Response To Stressors In Early Childhood, Tiffany Phu

Electronic Theses and Dissertations

This dissertation presents a set of two studies that investigate linkages between the Hypothalamic-Pituitary-Adrenal (HPA) axis and Sympathetic Nervous System (SNS) in response to a stressor paradigm among young children experiencing low-income. Contextual/child factors that shape multisystem physiologic coordination were also examined. A novel application of structural equation modeling was used to model sample-by-sample linkages between salivary analytes that indexed HPA axis and SNS functioning (respectively, salivary cortisol and salivary alpha amylase [sAA]). The preschoolers in Study 1 showed linkages between salivary cortisol and sAA across a novel research visit at their childcare center that included a stressor paradigm. Child …


Enhanced Operant Self-Administration Of Alcohol In Wistar Rats Receiving Intermittent Versus Continuous Alcohol Vapor Exposure, Laura O'Dell Jan 2004

Enhanced Operant Self-Administration Of Alcohol In Wistar Rats Receiving Intermittent Versus Continuous Alcohol Vapor Exposure, Laura O'Dell

Selected Works Temporary Series

No abstract provided.


Ethanol-Induced Increases In Neuroactive Steroids In The Rat Brain And Plasma Are Absent In Adrenalectomized And Gonadectomized Rats, Laura O'Dell Jan 2004

Ethanol-Induced Increases In Neuroactive Steroids In The Rat Brain And Plasma Are Absent In Adrenalectomized And Gonadectomized Rats, Laura O'Dell

Selected Works Temporary Series

No abstract provided.


Nicotine Withdrawal In Adolescent And Adult Rats, Laura O'Dell Jan 2004

Nicotine Withdrawal In Adolescent And Adult Rats, Laura O'Dell

Selected Works Temporary Series

No abstract provided.


Serotonin1b Receptors In The Ventral Tegmental Area Modulate Cocaine-Induced Elevations Of Dopamine Release In The Nucleus Accumbens, Laura O'Dell Jan 2004

Serotonin1b Receptors In The Ventral Tegmental Area Modulate Cocaine-Induced Elevations Of Dopamine Release In The Nucleus Accumbens, Laura O'Dell

Selected Works Temporary Series

No abstract provided.


Neurobiological Mechanisms In The Transition From Drug Use To Drug Dependence, Laura O'Dell Jan 2004

Neurobiological Mechanisms In The Transition From Drug Use To Drug Dependence, Laura O'Dell

Selected Works Temporary Series

No abstract provided.


Ethanol-Induced Increases In Neuroactive Steroids In The Rat Brain And Plasma Are Absent In Adrenalectomized And Gonadectomized Rats, Laura O'Dell Jan 2004

Ethanol-Induced Increases In Neuroactive Steroids In The Rat Brain And Plasma Are Absent In Adrenalectomized And Gonadectomized Rats, Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


Nicotine Withdrawal In Adolescent And Adult Rats, Laura O'Dell Jan 2004

Nicotine Withdrawal In Adolescent And Adult Rats, Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


Serotonin1b Receptors In The Ventral Tegmental Area Modulate Cocaine-Induced Elevations Of Dopamine Release In The Nucleus Accumbens, Laura O'Dell Jan 2004

Serotonin1b Receptors In The Ventral Tegmental Area Modulate Cocaine-Induced Elevations Of Dopamine Release In The Nucleus Accumbens, Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


Neurobiological Mechanisms In The Transition From Drug Use To Drug Dependence, Laura O'Dell Jan 2004

Neurobiological Mechanisms In The Transition From Drug Use To Drug Dependence, Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


The Selfish Nature Of Generosity: Harassment And Food Sharing In Primates, Jeffrey R. Stevens Jan 2004

The Selfish Nature Of Generosity: Harassment And Food Sharing In Primates, Jeffrey R. Stevens

Jeffrey Stevens Publications

Animals may share food to gain immediate or delayed fitness benefits. Previous studies of sharing have concentrated on delayed benefits such as reciprocity, trade and punishment. This study tests an alternative model (the harassment or sharing–under–pressure hypothesis) in which a food owner immediately benefits because sharing avoids costly harassment from a beggar. I present an experiment that varies the potential ability of the beggar to harass, and of the owner to defend the food, to examine the effects of harassment on food sharing in two primate species: chimpanzees (Pan troglodytes) and squirrel monkeys (Saimiri boliviensis). For …


A Longitudinal Examination Of Flow As A Predictor Of Recreational Exercise, Brian Michael Chichester Sep 2003

A Longitudinal Examination Of Flow As A Predictor Of Recreational Exercise, Brian Michael Chichester

Loma Linda University Electronic Theses, Dissertations & Projects

Flow state is a valued psychological state of enjoyment and well-being. It is characterized by feelings of intrinsic self-reward and marked by nine dimensions theorized to contribute to flow state. Flow has been studied mostly in elite athletes, whom report highly lucid flow experiences; to a much lesser extent it has been studied in recreational exercisers. Most prior research methodologies involve experience sampling or qualitative techniques, such as interviewing. Only one demonstrably valid and reliable flow instrument is widely available for efficient, quantitative measure of flow experiences. This study measures flow longitudinally in a recreational exercising population by comparing a …


Acutely-Administered Ethanol Participates In Testosterone Synthesis And Increases Testosterone In The Rat Brain., Laura O'Dell Jan 2003

Acutely-Administered Ethanol Participates In Testosterone Synthesis And Increases Testosterone In The Rat Brain., Laura O'Dell

Selected Works Temporary Series

No abstract provided.


Acutely-Administered Ethanol Participates In Testosterone Synthesis And Increases Testosterone In The Rat Brain., Laura O'Dell Jan 2003

Acutely-Administered Ethanol Participates In Testosterone Synthesis And Increases Testosterone In The Rat Brain., Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


Trends. Terrorist Brains, Ibpp Editor Nov 2002

Trends. Terrorist Brains, Ibpp Editor

International Bulletin of Political Psychology

This Trends article discusses the construct of biological reductionism in the context of the case of Red Army Faction member Ulrike Meinhof. For the author, overly emphasizing the biological aspects of Ms. Meinhof’s case might obscure legitimate grievances, and ultimately, lead to more cases of violence associated with terrorism.


Enhanced Locomotor, Reinforcing, And Neurochemical Effects Of Cocaine In Serotonin 5-Hydroxytryptamine 2c Receptor Mutant Mice, Laura O'Dell Jan 2002

Enhanced Locomotor, Reinforcing, And Neurochemical Effects Of Cocaine In Serotonin 5-Hydroxytryptamine 2c Receptor Mutant Mice, Laura O'Dell

Selected Works Temporary Series

No abstract provided.


Enhanced Locomotor, Reinforcing, And Neurochemical Effects Of Cocaine In Serotonin 5-Hydroxytryptamine 2c Receptor Mutant Mice, Laura O'Dell Jan 2002

Enhanced Locomotor, Reinforcing, And Neurochemical Effects Of Cocaine In Serotonin 5-Hydroxytryptamine 2c Receptor Mutant Mice, Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


Discounting And Reciprocity In An Iterated Prisoner’S Dilemma, David W. Stephens, Colleen M. Mclinn, Jeffrey R. Stevens Jan 2002

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 …


Antidepressant Drugs Appear To Enhance Cocaine-Induced Toxicity, Laura O'Dell Jan 2000

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 Jan 2000

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 Jan 2000

The Role Of Serotonin2 Receptors In Mediating 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 Jan 2000

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

Departmental Papers (Psych)

No abstract provided.