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Articles 1 - 30 of 56

Full-Text Articles in Biological Psychology

Impact Of Repeated Serotonin 6 Receptor Activation On Weight And Anxiety In C57bl/6j And Btbr Mice, Pedro Flores Aug 2026

Impact Of Repeated Serotonin 6 Receptor Activation On Weight And Anxiety In C57bl/6j And Btbr Mice, Pedro Flores

Electronic Theses, Projects, and Dissertations

Selective Serotonin Reuptake Inhibitors (SSRI) are the most common form of medication prescribed to people with anxiety disorders. One of the most common side effects is weight gain. This weight gain often leads to the suspension of treatment. This has led to studies focusing on specific serotonin (5-HT) receptor targets for modulating depression and anxiety. Studies examining 5-HT6 antagonist treatment have shown that they reduce body weight as well as produce brain specific changes. Less is known regarding 5-HT6 receptor agonists, although previous literature has shown that exposure to high doses produces weight loss but not at lower doses, while …


Serotonin 7 Receptor Modulation On Measures Of Working Memory And Anxiety, Antonio Gutierrez May 2026

Serotonin 7 Receptor Modulation On Measures Of Working Memory And Anxiety, Antonio Gutierrez

Electronic Theses, Projects, and Dissertations

Serotonin (5-HT) function is critical in the regulation and homeostasis of several neural systems. Alterations in 5-HT levels can directly impact the presence of neuropsychiatric disorders such as schizophrenia. With a wide range of 5-HT receptors, the potential impact each of these modulators have on behavior is important to better understand. The 5-HT7 receptor is the most recently identified 5-HT receptor. 5-HT7 receptors can be found in the thalamus, hypothalamus, and several areas of the hippocampus. Modulation of these receptors impact circadian rhythms, hormonal regulation and memory function. Previous research has that 5-HT7 antagonist compounds lead to conflicting results, highlighting …


Investigating Fentanyl-Xylazine Interactions: Implications For Opioid-Induced Hyperalgesia And Affective Dysregulation In Rats, Alejandra R. Lujan May 2026

Investigating Fentanyl-Xylazine Interactions: Implications For Opioid-Induced Hyperalgesia And Affective Dysregulation In Rats, Alejandra R. Lujan

Electronic Theses, Projects, and Dissertations

The growing prevalence of fentanyl adulterated with xylazine presents a major public health concern, yet the behavioral and physiological effects of this combination remain poorly characterized. This study examined the effects of acute fentanyl administration, alone and in combination with xylazine, on opioid-induced hyperalgesia, affective behavior, and mortality in male and female Sprague-Dawley rats (n=80). Rats received four fentanyl injections (60 µg/kg) administered at 15-minute intervals, with or without xylazine (0, 0.1, 0.333, or 1.0 mg/kg), as well as a saline control condition. Pain sensitivity was assessed using a hot plate assay at 6.5, 12, 24, and 48 hours post-injection. …


Impact Of Escitalopram On Postpartum Sleep/Wake Activity And Maternal Behaviors, Kimberly Guerrero Leon May 2026

Impact Of Escitalopram On Postpartum Sleep/Wake Activity And Maternal Behaviors, Kimberly Guerrero Leon

Electronic Theses, Projects, and Dissertations

The postpartum period is characterized by profound physiological and psychological changes, including disruptions in sleep and activity patterns, which may contribute to the onset of postpartum depression. If left untreated, postpartum depression can result in long-term consequences, including cognitive impairments, emotional dysregulation, impaired maternal-infant attachment, and the onset of sleep-related disorders. Selective serotonin reuptake inhibitor (SSRI), escitalopram, is prescribed for the treatment of postpartum depression due to its efficacy, favorable safety profile, and relatively low cost. While escitalopram is considered an effective treatment for depression and anxiety, far less is known about its impact on maternal behaviors during the postpartum …


Behavioral Factors Contributing To Initiation And Maintenance Of Adolescent Alcohol Consumption In Rats, Alexandra N. Tejada May 2025

Behavioral Factors Contributing To Initiation And Maintenance Of Adolescent Alcohol Consumption In Rats, Alexandra N. Tejada

Electronic Theses, Projects, and Dissertations

Adolescent alcohol consumption is a prevalent and significant public health issue. This exposure to alcohol leads to an increased vulnerability to alcohol use disorder (AUD) or other cognitive deficits later in adulthood. The current study aimed to explore the behavioral and circadian factors contributing to the initiation and maintenance of alcohol consumption during adolescence in rats. We investigated whether the baseline social aggression, anxiety-like behaviors, working memory, and sleep/wake activity patterns could be predictors of adolescent ethanol intake. Male and female Long Evans rats (N=36) were tested in the following behavioral assays: social play, open field, and spontaneous alternation tasks, …


Cognitive Differences In Parkinson’S Disease With Amyloid Positivity And Negativity, Kenya Luna Dec 2024

Cognitive Differences In Parkinson’S Disease With Amyloid Positivity And Negativity, Kenya Luna

Electronic Theses, Projects, and Dissertations

In Parkinson’s Disease (PD), research has shifted to investigate how biomarkers commonly seen in Alzheimer’s Disease (AD), such as amyloid beta (AB), may be associated with cognitive functioning in PD. AB is considered a reliable biomarker for AD pathology, however in PD there is a lacking biomarker that can accurately reflect severity of cognitive impairment. AD research has shown an association between low AB and cognitive decline, but the data in PD has mixed results. Most studies that analyze cognitive decline and biomarkers do not use a cutoff level and the few that do have a threshold vary greatly in …


The Role Of 5-Ht6 Receptor Activation In Learning Consolidation, Jasmine Alyssa Robinson Aug 2024

The Role Of 5-Ht6 Receptor Activation In Learning Consolidation, Jasmine Alyssa Robinson

Electronic Theses, Projects, and Dissertations

The focus on serotonergic dysfunction as a contributor to cognitive deficits in disorders such as autism spectrum disorder, Alzheimer's disease, and schizophrenia drives researchers to investigate the functional impact of specific serotonin receptor types on executive functioning. By discerning the potential enhancement or impairment effects, this endeavor seeks to unravel the complex interplay between serotonin receptors and cognitive abilities. Specifically, within the three domains of learning, acquisition, consolidation, and retrieval, we find serotonergic modulation to be pivotal. Recent studies have highlighted the 5-HT6 receptor as a novel target for cognitive enhancement. However, the majority of the research investigates the effects …


Serotonin 1a Receptor Modulation On Behavioral Flexibility In Btbr And C57bl/6j Mice, Cassandra Cavazos Aug 2024

Serotonin 1a Receptor Modulation On Behavioral Flexibility In Btbr And C57bl/6j Mice, Cassandra Cavazos

Electronic Theses, Projects, and Dissertations

Autism spectrum disorder (ASD) is a neurodevelopmental disorder that is characterized by a subset of symptoms known as restricted repetitive behaviors (RRBs). RRBs are categorized into both lower order and higher order RRBs, where the latter can be described as behavioral inflexibility. The BTBR T+ tf/J (BTBR) mouse strain has been an extensively used animal model that demonstrate the behavioral symptoms of these individuals, including inflexible behavior. Currently, there are few effective treatments for individuals with ASD that express RRBs. Past research has investigated treatments that target serotonin due its historic involvement in ASD. 8-OH-DPAT (8-hydroxy-2-(di-n-propylamine) tetralin) is a research …


Impact Of Perinatal Escitalopram Exposure On Adolescent Behavior, Jessica Bezenah - Bottorff May 2024

Impact Of Perinatal Escitalopram Exposure On Adolescent Behavior, Jessica Bezenah - Bottorff

Electronic Theses, Projects, and Dissertations

Escitalopram (EST), a selective serotonin reuptake inhibitor (SSRI), is an antidepressant frequently used during pregnancy, yet there is limited knowledge of its long-term effects on maternal use. Past studies suggest that maternal exposure may adversely affect the fetus, which may be due to the hyperserotonergic environment caused by the nature of SSRIs during early development. Modifications of the serotonergic system in offspring during certain critical periods of development may result in long-term behavioral and cognitive changes in adulthood. Further, recent human studies have demonstrated that prenatal exposure to SSRIs in humans may increase susceptibility to autism spectrum disorder (ASD) and …


Cerebrospinal Fluid Biomarkers Not Associated With Neurologic Compromise Among Mild Cognitively Impaired Reverters With Parkinson's Disease, Cameron Ryczek Dec 2023

Cerebrospinal Fluid Biomarkers Not Associated With Neurologic Compromise Among Mild Cognitively Impaired Reverters With Parkinson's Disease, Cameron Ryczek

Electronic Theses, Projects, and Dissertations

Parkinson's Disease (PD) is a neurodegenerative disease characterized by motor (e.g. tremors) and non-motor symptoms (e.g. cognitive impairment). PD patients' change in cognitive functioning can be observed using the following classifications: cognitively intact, mild cognitive impairment (MCI), or dementia (PDD). MCI has many subtypes, one of which is MCI reversion which is defined as those with MCI at one time point reverting to cognitively intact later. While there is limited research into the utility of MCI reversion and its relationship with cerebrospinal fluid (CSF) biomarkers in PD, this study will begin to elucidate this relationship. To this end, data from …


Repeated Treatment With 5-Ht1a And 5-Ht1b Receptor Agonists: Evidence Of Tolerance And Behavioral Sensitization, Jordan Taylor Dec 2023

Repeated Treatment With 5-Ht1a And 5-Ht1b Receptor Agonists: Evidence Of Tolerance And Behavioral Sensitization, Jordan Taylor

Electronic Theses, Projects, and Dissertations

Serotonin has been found to regulate several cognitive and physiological functions, and its role in depression and other neuropsychiatric disorders has been a focus of research. More specifically, a wealth of research regarding serotonin focuses on serotonergic medications in the treatment of neuropsychiatric disorders, such as depression and anxiety, and stimulates the 5-HT1A and 5-HT1B receptors. Within the last decade, there has been an increase in prescriptions of psychotropic medication for children, however, the efficacy and adverse effects of these drugs have not been evaluated in younger populations. While antidepressants reduce symptoms of depression in adults, they are …


Serotonin 1b/1a Receptor Modulation On Behavioral Flexibility In C57bl/6j Mice, Brandon L. Oliver Aug 2021

Serotonin 1b/1a Receptor Modulation On Behavioral Flexibility In C57bl/6j Mice, Brandon L. Oliver

Electronic Theses, Projects, and Dissertations

Pharmacological activation of the 5-HT1B and 1A receptors has been implicated in OCD-like behaviors in rodents such as increased perseverative circling, checking behaviors, and locomotor stereotypy. However, little is understood about the effects of 5-HT1B and 1A receptor activation on behavioral inflexibility, a common symptom associated with OCD. The present study utilized the 5-HT1B/1A receptor agonist RU24969 at 0.01, 0.1, and 1.0 mg/kg to test three hypotheses. The first hypothesis predicted RU24969 would lead to a dose-dependent impairment on behavioral flexibility in C57BL/6J mice. It was also predicted that male C57BL/6J mice would be more inflexible than female C57BL/6J mice …


Effects Of Neonatal Ethanol Exposure In Normal And Dopamine Deficient Rats, Jessica Luz Razo May 2021

Effects Of Neonatal Ethanol Exposure In Normal And Dopamine Deficient Rats, Jessica Luz Razo

Electronic Theses, Projects, and Dissertations

Attention deficit hyperactivity disorder (ADHD) is a common developmental disorder characterized by impulsivity, inattention, and hyperactivity. In rodents, neonatal 6-OHDA lesions is an established model of ADHD because it produces symptoms of hyperactivity and cognitive deficits that improve following psychostimulant treatment. Recently, early alcohol exposure in rodents has also been suggested as a model of ADHD due to the high prevalence of ADHD in children exposed prenatally to alcohol. However, children exposed to prenatal alcohol differ in symptoms from children with idiopathic ADHD, suggesting that ADHD caused by prenatal alcohol exposure may be a special subtype of ADHD or a …


Biological Siblings: Can You Trust Them With Your Mate?, Elisha Barron Dec 2020

Biological Siblings: Can You Trust Them With Your Mate?, Elisha Barron

Electronic Theses, Projects, and Dissertations

Recent studies suggest that genes may influence human mate preferences. What would this mean for same-sex siblings who share genes? Might they also share mate preferences and engage in mate poaching or would social norms and strong sibling bonds discourage such behaviors? We hypothesized that siblings would perceive their mate preferences to be more similar to their sibling’s than to an average person of their same gender. It was also hypothesized that the association between perceived sibling mate preferences and sibling mate poaching would be moderated by sibling closeness and sibling competition. Additionally, it was hypothesized that sibling mate competition …


Scope Of Attention Variation As A Function Of Anxiety And Depression, Kathleen Anne O'Donnell Jun 2020

Scope Of Attention Variation As A Function Of Anxiety And Depression, Kathleen Anne O'Donnell

Electronic Theses, Projects, and Dissertations

As a social species, correct emotional perception is so vital, that the human brain has evolved a mechanism to control attentional choices by exerting a narrowed field of perception during danger, called the scope of attention (SoA). The SoA determines what information will be focused on or ignored by blocking the perception of non-relevant items and increasing selective focus on danger; even if danger is merely a sad-face. The emotional items blocked from perception cannot be remembered because they were never perceived. But, attention-control to emotional stimuli also varies with mood, as seen in mood-disorders. A mood-disorder’s effect upon the …


Age-Dependent Effects Of Eedq On Cocaine-Induced Locomotor Activity And D2 Receptor Supersensitivity, Angie Teran Jul 2019

Age-Dependent Effects Of Eedq On Cocaine-Induced Locomotor Activity And D2 Receptor Supersensitivity, Angie Teran

Electronic Theses, Projects, and Dissertations

The neurochemical changes occurring between the preweanling period and adolescence could be crucial for understanding the role development plays in the manifestation of psychotic behaviors. N-ethoxycarbonyl-2-ethoxy-1,2-dihydroquinoline (EEDQ) fully attenuates the DA agonist-induced behaviors of adult rats, while potentiating the DA agonist-induced locomotor activity of preweanling rats. My specific hypotheses were as follows: (1) Systemically administered EEDQ would block the cocaine-induced locomotor activity of adult rats. (2) Systemically administered EEDQ would potentiate the cocaine-induced locomotion of preweanling rats. (3) EEDQ would increase the Emax values (a measure of D2 receptor sensitivity) of preweanling rats, but not adolescent or adult rats. …


Evidence-Based Teaching Strategies For Behavioral Neuroscience And Biological Psychology Classes, Richard Addante Oct 2018

Evidence-Based Teaching Strategies For Behavioral Neuroscience And Biological Psychology Classes, Richard Addante

Q2S Enhancing Pedagogy

Courses in Behavioral Neuroscience and Biological Psychology were taught while implementing evidence based teaching practices and several additional innovations. Students engaged in think-pair-share activities, group projects, and novel innovations of assignments including incentivized exam re-earns and creating modern memes of neuroscience content. Students exhibited evidence of learning, enjoyment, and teaching effectiveness.


Cannabinoid-Induced Behavioral Sensitization In Adolescent Sprague-Dawley Rats, Michelle Stone Oct 2018

Cannabinoid-Induced Behavioral Sensitization In Adolescent Sprague-Dawley Rats, Michelle Stone

Electronic Theses, Projects, and Dissertations

Adolescent cannabis use has grown because of increased availability and higher societal acceptance. This increase in cannabis use is problematic as adolescents who experiment with cannabis are more likely to abuse cannabis and experiment with other illicit drugs such as cocaine. The reason for the greater susceptibility to drugs use is unclear and may be the result of altered drug sensitivity after cannabis exposure. Thus, the present investigation used the behavioral sensitization paradigm to examine the behavioral response of early adolescent rats to the cannabinoid agonist CP 55,940 (CP) or cocaine after repeated cannabinoid administration. It was hypothesized that: (1) …


Effects Of Nicotine Exposure On Methamphetamine Oral Self-Administration, Extinction, And Reinstatement In Adolescent Rats, Zachary Robert Harmony Dec 2017

Effects Of Nicotine Exposure On Methamphetamine Oral Self-Administration, Extinction, And Reinstatement In Adolescent Rats, Zachary Robert Harmony

Electronic Theses, Projects, and Dissertations

Adolescence is a vulnerable developmental period in regards to drug initiation and use. The gateway hypothesis suggests that adolescent cigarette smoking may result in a heightened risk for methamphetamine use. However, little is understood about the role of nicotine on adolescent methamphetamine addiction. The aim of the present study was to determine whether early, late, or continuous adolescent nicotine exposure would alter oral methamphetamine self-administration, extinction, or reinstatement. A total of 164 male and female Sprague-Dawley rats were pretreated with saline or nicotine (0.16, or 0.64 mg/kg, sc) beginning on postnatal day (PD) 25 for 10 consecutive days. On PD …


The Importance Of Serotonergic And Adrenergic Receptors For The Induction And Expression Of One-Trial Cocaine-Induced Behavioral Sensitization, Krista N. Rudberg Dec 2016

The Importance Of Serotonergic And Adrenergic Receptors For The Induction And Expression Of One-Trial Cocaine-Induced Behavioral Sensitization, Krista N. Rudberg

Electronic Theses, Projects, and Dissertations

Addiction is a complex process in which behavioral sensitization may be an important component. While the behavioral effects of sensitization are well established, the intricate neurobiology of the phenomenon is still largely unknown. Dopamine systems mediate the induction of behavioral sensitization in adult rats, but there is a large amount of evidence showing that other neurotransmitter systems also modulate the induction process. For example, the α1b-adrenergic and 5-HT2A receptor systems are known to modulate the sensitized responding of adult rats, but the roles that these receptor systems play in the induction and expression of behavioral sensitization during the preweanling …


Nicotine And Methylphenidate Chornic Exposure On Adult Cannabinoid Receptor Agonist (Cp 55,940) Place Conditioning In Male Rats, Christopher P. Plant Jun 2016

Nicotine And Methylphenidate Chornic Exposure On Adult Cannabinoid Receptor Agonist (Cp 55,940) Place Conditioning In Male Rats, Christopher P. Plant

Electronic Theses, Projects, and Dissertations

A problematic connection has been reported between those who use nicotine related products alone or in combination with ADHD medications, like methylphenidate (MPH), in late childhood or early adolescence and the increased likelihood of later marijuana abuse in adulthood. Pre-clinical studies have found that the use of nicotine during the early adolescence period produces enduring changes to the endocannabinoid system in the brain. Since CB agonists, like marijuana, exert their effect through the eCB system, it is possible that early nicotine use may alter the rewarding nature of CB agonists in adulthood. In addition, MPH has also been shown to …


Importance Of The D2 Receptor For One- And Multi-Trial Psychostimulant-Induced Behavioral Sensitization In Preweanling Rats, Martha A. Mohd-Yusof Jun 2016

Importance Of The D2 Receptor For One- And Multi-Trial Psychostimulant-Induced Behavioral Sensitization In Preweanling Rats, Martha A. Mohd-Yusof

Electronic Theses, Projects, and Dissertations

The neural mechanisms mediating one-trial and multi-trial behavioral sensitization during early ontogeny are poorly understood. The purpose of this thesis was to assess the importance of D2-like receptors for the induction of cocaine- and methamphetamine-induced one-trial and multi-trial behavioral sensitization during the middle and late preweanling period. In a series of four experiments, rats were injected with saline or the selective dopamine D2-like receptor antagonist raclopride 15 min prior to treatment with the indirect dopamine agonists cocaine or methamphetamine. Acute control groups received two injections of saline. The pretreatment regimens occurred on either PND 16 or PND 20 (one-trial behavioral …


Monoamine Modulation Of Separation-Induced Ultrasonic Vocalizations In Preweanling F344 And Sd Rats, Cynthia Elizabeth Britt Jan 2013

Monoamine Modulation Of Separation-Induced Ultrasonic Vocalizations In Preweanling F344 And Sd Rats, Cynthia Elizabeth Britt

Theses Digitization Project

The purpose of this study was to determine if Fischer 344 (F344) rats, a strain which naturally shows deficits in social communication during adolescence, could be used as a model of the social communication deficits observed in autism. Thus, the goal was to determine if F344 rats would also show fewer emissions of isolated-induced ultrasonic vocalizations (an early onset form of social interaction) as compared to SD rats. Subjects consisted of 142 F344 rat pups (67 male and 75 female). Subjects were treated according to the "Guide for the Care and Use of Mammals in Neuroscience and Behavioral Research" under …


Adolescent And Adult Nicotine Exposure On The Acquisition Of Methamphetamine Self-Administration And The Reinstatement Of Extinguished Methamphetamine-Seeking In Male Rats, Joseph Allan Pipkin Jan 2013

Adolescent And Adult Nicotine Exposure On The Acquisition Of Methamphetamine Self-Administration And The Reinstatement Of Extinguished Methamphetamine-Seeking In Male Rats, Joseph Allan Pipkin

Theses Digitization Project

This study sought to determine the individual and combined contribution of adolescent and adult nicotine exposure on METH self-administration and METH-seeking behavior in male rats. Nicotine is a commonly abused substance among adolescents and is believed to be a "gateway" to other drugs of abuse. In support of the gateway hypothesis, cigarette smoking during adolescence is related to increased methamphetamine (METH) use in adulthood.


Preweanling Exposure To Selective Catecholamine Transporter Inhibitors Differentially Effects Morphine-Induced Antinociception In Adulthood, Joseph Marco Valentine Jan 2013

Preweanling Exposure To Selective Catecholamine Transporter Inhibitors Differentially Effects Morphine-Induced Antinociception In Adulthood, Joseph Marco Valentine

Theses Digitization Project

The purpose of this project is to determine how early methylphenidate exposure alters opioid receptor functioning in adulthood. To this end, we will administer selective monoamine transporter inhibitors for dopamine and norepinephrine (GBR-12904 and atomoxetine) during preweanling period and assess opioid function in adult rats by testing morphine-induced antinociception using the hot-plate and tail-flick tasks. In order to assess the effects of methylphenidate use on brain functions during development, investigations have been conducted in rats using ages roughly analogous to early and late childhood.


Role Of The Ventral Tegmental Area And Nucleus Accumbens For The One-Trial Behavioral Sensitization Of The Preweanling Rat, Alexandria Grace Pothier Jan 2012

Role Of The Ventral Tegmental Area And Nucleus Accumbens For The One-Trial Behavioral Sensitization Of The Preweanling Rat, Alexandria Grace Pothier

Theses Digitization Project

Behavioral sensitization is defined as an increase in behavioral responding that occurs after repeated administration of a psychostimulant. Behavioral sensitization is an important component of the addiction process that is mediated by different brain regions. In this thesis, lidocaine was used to determine those brain areas mediating one-trial behavioral sensitization in preweanling rats.


Paradoxical Behavior Effects Of Dopamine Receptor Inactivation In Preweanling Rats: Role Of The Dorsal Striatum, Taleen Siran Der-Ghazarian Jan 2012

Paradoxical Behavior Effects Of Dopamine Receptor Inactivation In Preweanling Rats: Role Of The Dorsal Striatum, Taleen Siran Der-Ghazarian

Theses Digitization Project

The purpose of this thesis was to: a) investigate the effects of intrastriatally administered N-ethoxycarbonyl-2ethoxy-1, 2-dihydroquinoline (EEDQ) on nonselective dopamine agonists (NPA) -induced locomotor activity in preweanling and adult rats; b) determine which dopamine receptor subtype (D1- or D2-like) is responsible for modulating EEDQ's paradoxical behavioral effects in preweanling rats; and c) examine the magnitude of EEDQ-induced D1- and D2-like receptor inactivation in both adult and preweanling rats. Subjects were 252 male and female rat pups of Sprague-Dawley descent (Charles River Laboratories, Hollister, CA, USA), born and raised at California State University, San Bernardino (CSUSB).


Persistence Of One-Trial Cocaine-Induced Behavioral Sensitization And Conditioned Activity In Preweanling Rats, Anthony Michael Cortez Jan 2011

Persistence Of One-Trial Cocaine-Induced Behavioral Sensitization And Conditioned Activity In Preweanling Rats, Anthony Michael Cortez

Theses Digitization Project

The purpose of this thesis was to determine the persistence of one-shot context-specific and context-independent behavioral sensitization by administering a single pretreatment injection of cocaine or saline in either the home cage or a novel test chamber on PD 19 or PD 79. In order to examine the persistence of conditioned activity, adult rats were given an injection of saline after 1, 3, or 5 abstinence days. Preweanling rats were given an injection of saline after only 1 abstinence day.


Medial Prefrontal Modulation Of The Nucleus Basalis Magnocellularis During Attention-Dependent Learning, Venuz Yadira Greenfield Jan 2011

Medial Prefrontal Modulation Of The Nucleus Basalis Magnocellularis During Attention-Dependent Learning, Venuz Yadira Greenfield

Theses Digitization Project

The nucleus basalis magnocellularis (NBM) sends cholinergic projections to the neocortex. While NBM activation of the neocortex regulates attention and contributes to memory formation, the mechanisms controlling NBM activity during attention-dependent learning are not well understood. The current experiment tested the hypothesis that the mPFC is critically involved in modulating NBM activity during attention-dependent learning in rats. A total of 80 male Long-Evans rats were purchased from a commerical research animal vendor. Rats were randomly assigned to one of four controlled groups. The procedures were done by an animal technician and veterinarian in the CSUSB Social and Behavioral Science vivarium …


Ontogeny Of One-Trial Behavioral Sensitization In Preweanling, Adolescent, And Adult Rats: Differential Effects Of Cocaine And Methamphetamine, Olga Olia Kozanian Jan 2011

Ontogeny Of One-Trial Behavioral Sensitization In Preweanling, Adolescent, And Adult Rats: Differential Effects Of Cocaine And Methamphetamine, Olga Olia Kozanian

Theses Digitization Project

The purpose of this thesis was to assess the ontogeny of cocaine- and methamphetamine-induced one-trial locomotor sensitization in preweanling, adolescent, and adult rats. Subjects were 336 male and female rats of Sprague-Dawley descent that were raised at California State University, San Bernardino (CSUSB).