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Neuroscience and Neurobiology

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Articles 211 - 240 of 291

Full-Text Articles in Biological Psychology

Female Rats Display Dose-Dependent Differences To The Rewarding And Aversive Effects Of Nicotine In An Age-, Hormone-, And Sex-Dependent Manner., Laura O'Dell Jan 2009

Female Rats Display Dose-Dependent Differences To The Rewarding And Aversive Effects Of Nicotine In An Age-, Hormone-, And Sex-Dependent Manner., Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


Rodent Models Of Nicotine Reward: What Do They Tell Us About Tobacco Abuse In Humans?, Laura O'Dell Jan 2009

Rodent Models Of Nicotine Reward: What Do They Tell Us About Tobacco Abuse In Humans?, Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


Impact Of Serotonin 2c Receptor Null Mutation On Physiology And Behavior Associated With Nigrostriatal Dopamine Pathway Function., Laura O'Dell Jan 2009

Impact Of Serotonin 2c Receptor Null Mutation On Physiology And Behavior Associated With Nigrostriatal Dopamine Pathway Function., Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


A Study Of Possible Pre-Cognitive Advantages Of Bilingualism, Marisela Gutierrez Jan 2009

A Study Of Possible Pre-Cognitive Advantages Of Bilingualism, Marisela Gutierrez

Open Access Theses & Dissertations

Past research has suggested that second language acquisition has a beneficial effect on the development of inhibitory control processes in children and adults. This has been referred to as the "bilingual advantage" and is most commonly quantified using the Simon task. Whether the bilingual advantage extends to precognitive mechanisms has not yet been examined. The goals of this study were to examine the bilingual advantage in university students; and to examine whether the bilingual advantage extends to the precognitive filtering mechanism of sensorimotor gating. It was predicted that, as compared to monolinguals, bilingual university students would have greater inhibitory control, …


Does Type Of Stimulus Influence Task-Irrelevant Evaluative Categorization Processes?, Guadalupe Corral Jan 2009

Does Type Of Stimulus Influence Task-Irrelevant Evaluative Categorization Processes?, Guadalupe Corral

Open Access Theses & Dissertations

The effect of stimulus type on task-irrelevant evaluative categorization was examined in two separate studies by using the P3 component from event-related brain potentials. The first study presented idiosyncratic stimuli consisting of individuals that were rated by participants as either positive or negative within sequences of pictorial and verbal stimuli. The second study presented sequences of novel and familiar stimuli consisting of previously normed unattractive and neutral individuals. It was hypothesized that pictures would elicit task-irrelevant evaluative categorization processes and so would novel stimuli (relative to words and familiar stimuli, respectively). Task-irrelevance was examined by assessing P3 peak amplitude to …


Characterization Of The Behavioral And Neurochemical Effects Of Nicotine Withdrawal In Adolescent And Adult Rats., Luis Alberto Natividad Jan 2009

Characterization Of The Behavioral And Neurochemical Effects Of Nicotine Withdrawal In Adolescent And Adult Rats., Luis Alberto Natividad

Open Access Theses & Dissertations

Previous studies have demonstrated that the behavioral effects of nicotine withdrawal are lower in adolescent versus adult rats. However, the neurochemical mechanisms that mediate these developmental differences are presently unclear. Much work has shown that nicotine reward is mediated via enhanced dopamine neurotransmission in the mesolimbic pathway which originates in the ventral tegmental area (VTA) and terminates in several forebrain structures including the nucleus accumbens (NAcc). More recently, studies have shown that nicotine withdrawal produces a decrease in NAcc dopamine transmission, an effect that is believed to serve as a neurochemical marker of withdrawal in adult rodents. The goal of …


Effects Of Pre-Pubertal Social Experiences On The Responsiveness Of Juvenile Rats To Predator Odors, Stephen M. Siviy Sep 2008

Effects Of Pre-Pubertal Social Experiences On The Responsiveness Of Juvenile Rats To Predator Odors, Stephen M. Siviy

Psychology Faculty Publications

The extent to which social variables may modulate the fear associated with a predator cue was assessed in juvenile rats. Cat odor reduced play to a comparable extent in both socially housed and isolate-housed rats, although socially housed rats exhibited more risk assessment during extinction. Rats that had played previously in the context used for assessing fear hid slightly less when exposed to cat odor than those rats that had not played previously in the testing context. However, no other differences were found between these two groups suggesting that prior social experience with the testing context has minimal effects on …


The Development Of Day-Night Differences In Sleep And Wakefulness In Norway Rats And The Effect Of Bilateral Enucleation, Andrew J. Gall, William D. Todd, Baisali Ray, Cassandra M. Coleman, Mark S. Blumberg Jun 2008

The Development Of Day-Night Differences In Sleep And Wakefulness In Norway Rats And The Effect Of Bilateral Enucleation, Andrew J. Gall, William D. Todd, Baisali Ray, Cassandra M. Coleman, Mark S. Blumberg

Faculty Publications

The suprachiasmatic nucleus (SCN) exhibits circadian rhythmicity in fetal and infant rats, but little is known about the consequences of this rhythmicity for infant behavior. Here, in Experiment 1, we measured sleep and wakefulness in rats during the day and night in postnatal day (P)2, P8, P15 and P21 subjects. As early as P2, day-night differences in sleep-wake activity were detected. Nocturnal wakefulness began to emerge around P15 and was reliably expressed by P21. We hypothesized that the process of photic entrainment over the first postnatal week, which depends upon the development of connectivity between the retinohypothalamic tract (RHT) and …


Effects Of Neonatal Handling On Play Behavior And Fear Towards A Predator Odor In Juvenile Rats, Stephen M. Siviy Feb 2008

Effects Of Neonatal Handling On Play Behavior And Fear Towards A Predator Odor In Juvenile Rats, Stephen M. Siviy

Psychology Faculty Publications

The effects of brief daily separation, also known as "handling," during the first 2 weeks of life on play behavior and fearfulness toward a predatory odor were assessed in juvenile rats. Handled rats were more playful than nonhandled control rats, and while handling had no effect on the direct response of these rats toward a predatory odor, handled rats did not exhibit a conditioned suppression of play when tested later in the same context where they had been exposed to the predatory odor. Handled rats were still wary of the environment in that they continued to show a heightened level …


Crf1 Receptor Antagonists Attenuate Escalated Cocaine Self-Administration In Rats, Laura O'Dell Jan 2008

Crf1 Receptor Antagonists Attenuate Escalated Cocaine Self-Administration In Rats, Laura O'Dell

Selected Works Temporary Series

No abstract provided.


Cellular And Behavioral Interactions Of Gabapentin With Alcohol Dependence, Laura O'Dell Jan 2008

Cellular And Behavioral Interactions Of Gabapentin With Alcohol Dependence, Laura O'Dell

Selected Works Temporary Series

No abstract provided.


Enhanced Vulnerability To The Rewarding Effects Of Nicotine During The Adolescent Period Of Development, Laura O'Dell Jan 2008

Enhanced Vulnerability To The Rewarding Effects Of Nicotine During The Adolescent Period Of Development, Laura O'Dell

Selected Works Temporary Series

No abstract provided.


Cellular And Behavioral Interactions Of Gabapentin With Alcohol Dependence, Laura O'Dell Jan 2008

Cellular And Behavioral Interactions Of Gabapentin With Alcohol Dependence, Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


Crf1 Receptor Antagonists Attenuate Escalated Cocaine Self-Administration In Rats, Laura O'Dell Jan 2008

Crf1 Receptor Antagonists Attenuate Escalated Cocaine Self-Administration In Rats, Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


Enhanced Vulnerability To The Rewarding Effects Of Nicotine During The Adolescent Period Of Development, Laura O'Dell Jan 2008

Enhanced Vulnerability To The Rewarding Effects Of Nicotine During The Adolescent Period Of Development, Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


Brainstem Cholinergic Modulation Of Muscle Tone In Infant Rats, Andrew J. Gall, Amy Poremba, Mark S. Blumberg Jun 2007

Brainstem Cholinergic Modulation Of Muscle Tone In Infant Rats, Andrew J. Gall, Amy Poremba, Mark S. Blumberg

Faculty Publications

In week-old rats, lesions of the dorsolateral pontine tegmentum (DLPT) and nucleus pontis oralis (PnO) have opposing effects on nuchal muscle tone. Specifically, pups with DLPT lesions exhibit prolonged bouts of nuchal muscle atonia (indicative of sleep) and pups with PnO lesions exhibit prolonged bouts of high nuchal muscle tone (indicative of wakefulness). Here we test the hypothesis that nuchal muscle tone is modulated, at least in part, by cholinergically mediated interactions between these two regions. First, in unanesthetized pups, we found that chemical infusion of the cholinergic agonist carbachol (22 mM, 0.1 µL) within the DLPT produced high muscle …


Adolescent Nicotine Exposure Produces Less Affective Measures Of Withdrawal Relative To Adult Nicotine Exposure In Male Rats, Laura O'Dell Jan 2007

Adolescent Nicotine Exposure Produces Less Affective Measures Of Withdrawal Relative To Adult Nicotine Exposure In Male Rats, Laura O'Dell

Selected Works Temporary Series

No abstract provided.


Crf–Crf1 System Activation Mediates Withdrawal-Induced Increases In Nicotine Self-Administration In Nicotine-Dependent Rats., Laura O'Dell Jan 2007

Crf–Crf1 System Activation Mediates Withdrawal-Induced Increases In Nicotine Self-Administration In Nicotine-Dependent Rats., Laura O'Dell

Selected Works Temporary Series

No abstract provided.


Diminished Nicotine Withdrawal In Adolescent Rats: Implications For Vulnerability To Addiction, Laura O'Dell Jan 2007

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

Selected Works Temporary Series

No abstract provided.


“Nicotine Deprivation Effect” In Rats With Intermittent 23-Hour Access To Intravenous Nicotine Self-Administration, Laura O'Dell Jan 2007

“Nicotine Deprivation Effect” In Rats With Intermittent 23-Hour Access To Intravenous Nicotine Self-Administration, Laura O'Dell

Selected Works Temporary Series

No abstract provided.


Viral Vector-Induced Amygdala Npy Overexpression Reverses Increased Alcohol Intake Caused By Repeated Deprivations In Wistar Rats, Laura O'Dell Jan 2007

Viral Vector-Induced Amygdala Npy Overexpression Reverses Increased Alcohol Intake Caused By Repeated Deprivations In Wistar Rats, Laura O'Dell

Selected Works Temporary Series

No abstract provided.


Crf–Crf1 System Activation Mediates Withdrawal-Induced Increases In Nicotine Self-Administration In Nicotine-Dependent Rats., Laura O'Dell Jan 2007

Crf–Crf1 System Activation Mediates Withdrawal-Induced Increases In Nicotine Self-Administration In Nicotine-Dependent Rats., Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


Adolescent Nicotine Exposure Produces Less Affective Measures Of Withdrawal Relative To Adult Nicotine Exposure In Male Rats, Laura O'Dell Jan 2007

Adolescent Nicotine Exposure Produces Less Affective Measures Of Withdrawal Relative To Adult Nicotine Exposure In Male Rats, Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


Viral Vector-Induced Amygdala Npy Overexpression Reverses Increased Alcohol Intake Caused By Repeated Deprivations In Wistar Rats, Laura O'Dell Jan 2007

Viral Vector-Induced Amygdala Npy Overexpression Reverses Increased Alcohol Intake Caused By Repeated Deprivations In Wistar Rats, Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


“Nicotine Deprivation Effect” In Rats With Intermittent 23-Hour Access To Intravenous Nicotine Self-Administration, Laura O'Dell Jan 2007

“Nicotine Deprivation Effect” In Rats With Intermittent 23-Hour Access To Intravenous Nicotine Self-Administration, Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


Comparative Perspectives On The Functions Of Sleep, John A. Lesku Dec 2006

Comparative Perspectives On The Functions Of Sleep, John A. Lesku

All-Inclusive List of Electronic Theses and Dissertations

Previous comparative studies of sleep identified relationships between sleep and constitutive and ecological variables. Results from these studies helped shape early hypotheses for the function of sleep; however, all were conducted without an explicit phylogenetic or theoretic framework and focused exclusively on mammals. Hence, the validity of their results and applicability to other taxa is unclear. We ( 1) reviewed the literature on sleep in animals, (2) updated and reanalyzed the mammalian dataset using independent contrasts and (3) multivariate path analysis, and ( 4) presented the first quantitative analysis of sleep in a non-mammalian taxon: birds. Following previous mammalian analyses, …


Behavioral And Neurochemical Responses To Cocaine In Periadolescent And Adult Rats, Laura O'Dell Jan 2006

Behavioral And Neurochemical Responses To Cocaine In Periadolescent And Adult Rats, Laura O'Dell

Selected Works Temporary Series

No abstract provided.


Corticotropin-Releasing Factor Within The Central Nucleus Of The Amygdala Mediates Enhanced Ethanol Self-Administration In Ethanol-Dependent Rats During Withdrawal., Laura O'Dell Jan 2006

Corticotropin-Releasing Factor Within The Central Nucleus Of The Amygdala Mediates Enhanced Ethanol Self-Administration In Ethanol-Dependent Rats During Withdrawal., Laura O'Dell

Selected Works Temporary Series

No abstract provided.


Biphasic Alterations In Serotonin1b (5-Ht1b) Receptor Function During Abstinence From Extended Cocaine Self-Administration, Laura O'Dell Jan 2006

Biphasic Alterations In Serotonin1b (5-Ht1b) Receptor Function During Abstinence From Extended Cocaine Self-Administration, Laura O'Dell

Selected Works Temporary Series

No abstract provided.


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

Selected Works Temporary Series

No abstract provided.