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Articles 1171 - 1200 of 1301

Full-Text Articles in Neuroscience and Neurobiology

Nicotine Withdrawal Produces Fewer Decreases In Extracellular Levels Of Dopamine In The Nucleus Accumbens Of Adolescent Versus Adult Rats., Laura O'Dell Jan 2009

Nicotine Withdrawal Produces Fewer Decreases In Extracellular Levels Of Dopamine In The Nucleus Accumbens Of Adolescent Versus Adult Rats., Laura O'Dell

Selected Works Temporary Series

No abstract provided.


Protracted Withdrawal From Alcohol And Drugs Of Abuse Impairs Long-Term Potentiation Of Intrinsic Excitability In The Juxtacapsular Bed Nucleus Of The Stria Terminalis, Laura O'Dell Jan 2009

Protracted Withdrawal From Alcohol And Drugs Of Abuse Impairs Long-Term Potentiation Of Intrinsic Excitability In The Juxtacapsular Bed Nucleus Of The Stria Terminalis, Laura O'Dell

Selected Works Temporary Series

No abstract provided.


The Effects Of Opioids And Opioid Analogs On Animal And Human Endocrine Systems, Laura O'Dell Jan 2009

The Effects Of Opioids And Opioid Analogs On Animal And Human Endocrine Systems, Laura O'Dell

Selected Works Temporary Series

No abstract provided.


The Effects Of Opioids And Opioid Analogs On Animal And Human Endocrine Systems, Laura O'Dell Jan 2009

The Effects Of Opioids And Opioid Analogs On Animal And Human Endocrine Systems, Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


Affective Decision-Making Predictive Of Chinese Adolescent Drinking Behaviors, Lin Xiao, Antoine Bechara, Jerry L. Grenard, Alan W. Stacy, Paula Palmer, Yonglan Wei, Yong Jia, Xiaolu Fu, C. Anderson Johnson Jan 2009

Affective Decision-Making Predictive Of Chinese Adolescent Drinking Behaviors, Lin Xiao, Antoine Bechara, Jerry L. Grenard, Alan W. Stacy, Paula Palmer, Yonglan Wei, Yong Jia, Xiaolu Fu, C. Anderson Johnson

CGU Faculty Publications and Research

The goal of the current investigation was to address whether affective decision making would serve as a unique neuropsychological marker to predict drinking behaviors among adolescents. We conducted a longitudinal study of 181 Chinese adolescents in Chengdu city, China. In their 10th grade (ages 15–16), these adolescents were tested for their affective decision-making ability using the Iowa Gambling Task (IGT) and working memory capacity using the Self-Ordered Pointing Test. Self-report questionnaires were used to assess academic performance and drinking behaviors. At 1-year follow-up, questionnaires were completed to assess drinking behaviors, and the UPPS Impulsive Behavior Scale was used to examine …


Nicotine Withdrawal Produces Fewer Decreases In Extracellular Levels Of Dopamine In The Nucleus Accumbens Of Adolescent Versus Adult Rats., Laura O'Dell Jan 2009

Nicotine Withdrawal Produces Fewer Decreases In Extracellular Levels Of Dopamine In The Nucleus Accumbens Of Adolescent Versus Adult Rats., Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


Protracted Withdrawal From Alcohol And Drugs Of Abuse Impairs Long-Term Potentiation Of Intrinsic Excitability In The Juxtacapsular Bed Nucleus Of The Stria Terminalis, Laura O'Dell Jan 2009

Protracted Withdrawal From Alcohol And Drugs Of Abuse Impairs Long-Term Potentiation Of Intrinsic Excitability In The Juxtacapsular Bed Nucleus Of The Stria Terminalis, Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


Alcohol Self-Administration Acutely Stimulates The Hypothalamic-Pituitary-Adrenal (Hpa) Axis, But Alcohol Dependence Leads To A Dampened Neuroendocrine State, Laura O'Dell Jan 2009

Alcohol Self-Administration Acutely Stimulates The Hypothalamic-Pituitary-Adrenal (Hpa) Axis, But Alcohol Dependence Leads To A Dampened Neuroendocrine State, Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


A Psychobiological Framework Of The Substrates That Mediate Nicotine Use During Adolescence, Laura O'Dell Jan 2009

A Psychobiological Framework Of The Substrates That Mediate Nicotine Use During Adolescence, Laura O'Dell

Departmental Papers (Psych)

No abstract provided.


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.


The Neuroscientific Study Of The Self: Methodological And Theoretical Challenges, Cynthia J. Najdowski, Samuel E. Winer Jan 2009

The Neuroscientific Study Of The Self: Methodological And Theoretical Challenges, Cynthia J. Najdowski, Samuel E. Winer

Psychology Faculty Scholarship

Neuroscientific research methods, such as brain imaging techniques, have increasingly been applied to social cognitive research efforts and, in particular, to the study of the self. In this essay we discuss the ability of such research to shed light on the emergent, dynamic psychological phenomenon of self. Although neuroscientific tools can be useful for gaining general knowledge about associated underlying structures, a careful consideration of the methodological and theoretical issues discussed herein is necessary to avoid simplifying or reifying the self.


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 …


Neurocognitive Deficits And Functional Outcome In Bipolar Disorder, Danielle T. Bello Jan 2009

Neurocognitive Deficits And Functional Outcome In Bipolar Disorder, Danielle T. Bello

UNLV Theses, Dissertations, Professional Papers, and Capstones

Bipolar disorder affects approximately 1% of the population. It is a severe and debilitating illness, causing serious impairment of interpersonal, occupational and social functioning. The disorder is characterized by marked mood swings as well significant neurocognitive deficits. Based on work with other psychiatric and neurological disorders, neurocognitive deficits in bipolar disorder are expected to be strong predictors of functional capacity. However, few studies have evaluated the consequences of neurocognitive deficits in this disorder. Most available studies have focused on the clinical correlates of functional outcome, such as number of hospitalizations, age of disorder onset, and severity of symptoms. While useful, …


Maternal Photoperiodic History Affects Offspring Development In Syrian Hamsters, Annaliese K. Beery, Matthew J. Paul, Irving Zucker Oct 2008

Maternal Photoperiodic History Affects Offspring Development In Syrian Hamsters, Annaliese K. Beery, Matthew J. Paul, Irving Zucker

Neuroscience: Faculty Publications

During the first 7 weeks of postnatal life, short day lengths inhibit the onset of puberty in many photoperiodic rodents, but not in Syrian hamsters. In this species, timing of puberty and fecundity are independent of the early postnatal photoperiod. Gestational day length affects postnatal reproductive development in several rodents; its role in Syrian hamsters has not been assessed. We tested the hypothesis that cumulative effects of pre- and postnatal short day lengths would restrain gonadal development in male Syrian hamsters. Males with prenatal short day exposure were generated by dams transferred to short day lengths 6 weeks, 3 weeks, …


Examining Neurophysiological Evidence Of Age-Related Interactions Of Sensory And Cognitive Processes During Speech Processing, Cady Kristen Block Oct 2008

Examining Neurophysiological Evidence Of Age-Related Interactions Of Sensory And Cognitive Processes During Speech Processing, Cady Kristen Block

Psychology Theses & Dissertations

The present study sought to examine the contribution of sensory and cognitive factors on speech processing as evidenced by ERP measures and to find support for the Sensory Cognitive Interaction Theory (SCIT) and the Effortfulness Hypothesis in that older adults. who experience sensory deficits with normal aging. must put forth increased effort during early sensory stages of speech processing that may compromise subsequent semantic performance and recall of information. In the present investigation. younger and older adults performed a sentence verification task at low and high presentation levels (PL). Accuracy and response time to sentence verifications were assessed along with …


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 …


Day Length And Estradiol Affect Same-Sex Affiliative Behavior In The Female Meadow Vole, Annaliese K. Beery, Theresa J. Loo, Irving Zucker Jun 2008

Day Length And Estradiol Affect Same-Sex Affiliative Behavior In The Female Meadow Vole, Annaliese K. Beery, Theresa J. Loo, Irving Zucker

Neuroscience: Faculty Publications

Non-sexual social bonding between adult mammals remains poorly understood, despite its importance in many species. Female meadow voles are territorial and nest alone in long summer day lengths when circulating estradiol concentrations are high, but cohabit in groups in short winter photoperiods when estradiol secretion is low. The influence of day length and estradiol on same-sex huddling behavior was assessed in adult female pairs housed together in long day lengths (LDs) or short day lengths (SDs) from weaning. The behavior of intact, ovariectomized, and estradiol-treated ovariectomized females from each photoperiod was assessed during 3 hour partner preference tests. Intact SD …


Factors That Affect Performance On Executive Functioning After Coronary Artery Bypass Grafting, Sapna Mahesh Patel Jun 2008

Factors That Affect Performance On Executive Functioning After Coronary Artery Bypass Grafting, Sapna Mahesh Patel

Loma Linda University Electronic Theses, Dissertations & Projects

Research suggests that individuals who undergo coronary artery bypass grafting (CABG) experience declines in neuropsychological functioning post-operatively. This decline has been observed in up to 80% of patients early after surgery, and in up to 30% of patients after six months. Many studies have examined the potential effects of CABG on neuropsychological functioning in general, and numerous studies have found that executive functions are impaired in particular. However, none have examined what factors contribute to observed executive dysfunction after CABG. This study investigated the role of memory functions on executive functions in a selected sample of patients undergoing CABG. This …


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.