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https://www.readbyqxmd.com/read/29128305/methamphetamine-induced-impulsivity-during-chronic-methamphetamine-treatment-in-rats-effects-of-the-taar-1-agonist-ro5263397
#1
Zhaoxia Xue, Justin N Siemian, Bernard N Johnson, Yanan Zhang, Jun-Xu Li
Impulsivity is an important personality trait associated with several clinical syndromes including drug abuse. While repeated drug exposure is known to increase certain behavioral responses, such as locomotion, to subsequent drug exposure, few studies have examined whether such sensitization develops for impulsive behavior. In the current study we tested the effects of methamphetamine acutely, during the course of, and upon discontinuation of chronic methamphetamine treatment on impulsive behavior in two models, the 5-choice serial reaction time task (5-CSRTT) and the delay-discounting task which measure impulsive action and impulsive choice, respectively...
November 8, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/29102783/influence-of-intertrial-interval-on-basal-and-drug-induced-impulsive-action-in-the-5-choice-serial-reaction-time-task-effects-of-d-amphetamine-and-%C3%A2-2-5-dimethoxy-4-iodoamphetamine-doi
#2
Ciaràn M Fitzpatrick, Vojislav S Maric, Simon T Bate, Jesper T Andreasen
Impulsivity is a characteristic of a number of neuropsychiatric disorders such as attention-deficit/hyperactivity disorder. The 5-choice serial reaction time task (5-CSRTT) is a rodent paradigm extensively used to assess attention and impulsivity. Notably, 5-CSRTT studies do not typically account for the reduction in premature responding, the measure of impulsive action, occurring upon repeated exposure to test sessions with long or variable intertrial intervals (ITIs). This present 5-CSRTT study investigated the use of variable ITIs (5, 10 or 15s) across 15 test days (4 training days followed by 1 drug test day per week for three weeks) as previous experience had shown that 4 training days would be sufficient to induce consistent premature response levels in male C57BL/6J mice...
November 2, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28964912/functional-coding-variation-in-the-presynaptic-dopamine-transporter-associated-with-neuropsychiatric-disorders-drives-enhanced-motivation-and-context-dependent-impulsivity-in-mice
#3
Gwynne L Davis, Adele Stewart, Gregg D Stanwood, Raajaram Gowrishankar, Maureen K Hahn, Randy D Blakely
Recent genetic analyses have provided evidence that clinical commonalities associated with different psychiatric diagnoses often have shared mechanistic underpinnings. The development of animal models expressing functional genetic variation attributed to multiple disorders offers a salient opportunity to capture molecular, circuit and behavioral alterations underlying this hypothesis. In keeping with studies suggesting dopaminergic contributions to attention-deficit hyperactivity disorder (ADHD), bipolar disorder (BPD) and autism spectrum disorder (ASD), subjects with these diagnoses have been found to express a rare, functional coding substitution in the dopamine (DA) transporter (DAT), Ala559Val...
January 30, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/28892143/rodent-test-of-attention-and-impulsivity-the-5-choice-serial-reaction-time-task
#4
Guy A Higgins, Leo B Silenieks
The 5-choice serial reaction time task (5-CSRTT) is employed extensively to measure attention in rodents. The assay involves animals trained to respond to a brief, unpredictable visual stimulus presented in one of five locations. The effects of experimental manipulations on response speed and choice accuracy are measured, and each related to attentional performance. The 5-CSRTT is also used to measure motor impulsivity. Adapted from a human task, the 5-CSRTT can be employed with rodents or primates, highlighting its translational value...
September 11, 2017: Current Protocols in Pharmacology
https://www.readbyqxmd.com/read/28856391/dissociable-effects-of-cocaine-and-yohimbine-on-impulsive-action-and-relapse-to-cocaine-seeking
#5
Nienke Broos, Yvar van Mourik, Dustin Schetters, Taco J De Vries, Tommy Pattij
RATIONALE: A strong association has been demonstrated between various forms of impulsivity and addiction-like behavior in both humans and rats. OBJECTIVES: In this study, we investigated how impulsive action, as measured in the 5-choice serial reaction time task (5-CSRTT), is affected during various stages of cocaine taking and seeking and by relapse-provoking stimuli in animals that were trained both in an intravenous cocaine self-administration paradigm and in the 5-CSRTT...
November 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28741623/effects-of-suvorexant-a-dual-orexin-hypocretin-receptor-antagonist-on-impulsive-behavior-associated-with-cocaine
#6
Taylor A Gentile, Steven J Simmons, Mia N Watson, Krista L Connelly, Eugen Brailoiu, Yanan Zhang, John W Muschamp
Hypothalamic hypocretin (orexin) peptides mediate arousal, attention, and reward processing. Fibers containing orexins project to brain structures that govern motivated behavior, including the ventral tegmental area (VTA). A number of psychiatric conditions, including attention deficit hyperactivity disorder (ADHD) and substance use disorders, are characterized by deficits in impulse control, however the relationship between orexin and impulsive behavior is incompletely characterized. The effects of systemic or centrally administered orexin receptor (OXR) antagonists on measures of impulsive-like behavior in rats were evaluated using the five-choice serial reaction time task (5-CSRTT) and delay discounting procedures...
July 25, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28716096/optimizing-reproducibility-of-operant-testing-through-reinforcer-standardization-identification-of-key-nutritional-constituents-determining-reward-strength-in-touchscreens
#7
Eun Woo Kim, Benjamin U Phillips, Christopher J Heath, So Yeon Cho, Hyunjeong Kim, Jemeen Sreedharan, Ho-Taek Song, Jong Eun Lee, Timothy J Bussey, Chul Hoon Kim, Eosu Kim, Lisa M Saksida
Reliable and reproducible assessment of animal learning and behavior is a central aim of basic and translational neuroscience research. Recent developments in automated operant chamber technology have led to the possibility of universal standard protocols, in addition to increased translational potential, reliability and accuracy. However, the impact of regional and national differences in the supplies of available reinforcers in this system on behavioural performance and inter-laboratory variability is an unknown and at present uncontrolled variable...
July 17, 2017: Molecular Brain
https://www.readbyqxmd.com/read/28681089/a-novel-test-for-evaluating-horses-spontaneous-visual-attention-is-predictive-of-attention-in-operant-learning-tasks
#8
C Rochais, M Sébilleau, M Houdebine, P Bec, M Hausberger, S Henry
Attention is described as the ability to process selectively one aspect of the environment over others. In this study, we characterized horses' spontaneous attention by designing a novel visual attention test (VAT) that is easy to apply in the animal's home environment. The test was repeated over three consecutive days and repeated again 6 months later in order to assess inter-individual variations and intra-individual stability. Different patterns of attention have been revealed: 'overall' attention when the horse merely gazed at the stimulus and 'fixed' attention characterized by fixity and orientation of at least the visual and auditory organs towards the stimulus...
August 2017: Die Naturwissenschaften
https://www.readbyqxmd.com/read/28487067/selective-and-interactive-effects-of-d2-receptor-antagonism-and-positive-allosteric-mglur4-modulation-on-waiting-impulsivity
#9
Sarah N Isherwood, Trevor W Robbins, Janet R Nicholson, Jeffrey W Dalley, Anton Pekcec
BACKGROUND: Metabotropic glutamate receptor 4 (mGluR4) and dopamine D2 receptors are specifically expressed within the indirect pathway neurons of the striato-pallidal-subthalamic pathway. This unique expression profile suggests that mGluR4 and D2 receptors may play a cooperative role in the regulation and inhibitory control of behaviour. We investigated this possibility by testing the effects of a functionally-characterised positive allosteric mGluR4 modulator, 4-((E)-styryl)-pyrimidin-2-ylamine (Cpd11), both alone and in combination with the D2 receptor antagonist eticlopride, on two distinct forms of impulsivity...
September 1, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28418405/adenosine-a2a-receptor-and-erk-driven-impulsivity-potentiates-hippocampal-neuroblast-proliferation
#10
A Oliveros, C H Cho, A Cui, S Choi, D Lindberg, D Hinton, M-H Jang, D-S Choi
Dampened adenosine A2A receptor (A2AR) function has been implicated in addiction through enhancement of goal-directed behaviors. However, the contribution of the A2AR to the control of impulsive reward seeking remains unknown. Using mice that were exposed to differential reward of low rate (DRL) schedules during Pavlovian-conditioning, second-order schedule discrimination, and the 5-choice serial reaction time task (5-CSRTT), we demonstrate that deficits of A2AR function promote impulsive responses. Antagonism of the A2AR lowered ERK1 and ERK2 phosphorylation in the dorsal hippocampus (dHip) and potentiated impulsivity during Pavlovian-conditioning and the 5-CSRTT...
April 18, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28386698/comparison-of-some-behavioral-effects-of-d-and-l-methamphetamine-in-adult-male-rats
#11
Justin N Siemian, Zhaoxia Xue, Bruce E Blough, Jun-Xu Li
RATIONALE: Both l- and d-methamphetamine (l- and d-MA) are more potent to release norpepinephrine (NE) than dopamine, and the selectivity is greater for l-MA than d-MA. Little is known of the in vivo pharmacology of l-MA. OBJECTIVE: This study compared the effects of l-MA and d-MA in assays of nociception, behavioral disruption, and impulsivity. METHODS: Antinociceptive effects of d- and l-MA were examined in two pain assays: the warm water tail withdrawal test for acute nociception and the von Frey test in complete Freund's adjuvant (CFA)-treated rats for chronic inflammatory pain...
July 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28386221/deep-brain-stimulation-of-the-nucleus-accumbens-core-affects-trait-impulsivity-in-a-baseline-dependent-manner
#12
Maria C Schippers, Bastiaan Bruinsma, Mathijs Gaastra, Tanja I Mesman, Damiaan Denys, Taco J De Vries, Tommy Pattij
Deep brain stimulation (DBS) of the nucleus accumbens (NA) is explored as a treatment for refractory psychiatric disorders, such as obsessive-compulsive disorder (OCD), depressive disorder (MDD), and substance use disorder (SUD). A common feature of some of these disorders is pathological impulsivity. Here, the effects of NAcore DBS on impulsive choice and impulsive action, two distinct forms of impulsive behavior, were investigated in translational animal tasks, the delayed reward task (DRT) and five-choice serial reaction time task (5-CSRTT), respectively...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28378204/a-schizophrenia-relevant-5-choice-serial-reaction-time-task-for-mice-assessing-broad-monitoring-distractibility-and-impulsivity
#13
Huiping Huang, Simone Guadagna, Maddalena Mereu, Mariasole Ciampoli, Giacomo Pruzzo, Theresa Ballard, Francesco Papaleo
The 5-Choice Serial Reaction Time Task (5-CSRTT) is an automated test for rodents allowing the assessment of multiple cognitive measures. Originally designed to assess cognitive deficits relevant to attention deficit hyperactivity disorder, it has been widely used in the investigation of neural systems of attention. In the current study, we have set up a modified version, which reduced the training phase to only 8-9 days with minimal food deprivation and without single-housing. Furthermore, based on evidence that patients with schizophrenia are more impaired in broad monitoring abilities than in sustained attention, we successfully developed a protocol replicating the Spatial Attentional Resource Allocation Task (SARAT), used in humans to assess broad monitoring...
July 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28314950/-waiting-impulsivity-in-isolation-reared-and-socially-reared-rats-effects-of-amphetamine
#14
Yia-Ping Liu, Lawrence S Wilkinson, Trevor W Robbins
BACKGROUND: Rats reared in social isolation exhibit various cognitive and behavioural abnormalities in adulthood. However, impulsivity following this treatment still remains unclear, especially in response to medications used in attention deficit hyperactivity disorder, such as amphetamine. METHODS: Using an isolation-rearing (IR) manipulation, the present study examined the effects of IR on impulsive action and impulsive choice when also treated with doses of D-amphetamine, by employing the five-choice serial reaction time task (5-CSRTT) and a temporal discounting of reward task (TDRT), respectively...
May 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28209774/methyl-donor-supplementation-alters-cognitive-performance-and-motivation-in-female-offspring-from-high-fat-diet-fed-dams
#15
Sarah E McKee, Nicola M Grissom, Christopher T Herdt, Teresa M Reyes
During gestation, fetal nutrition is entirely dependent on maternal diet. Maternal consumption of excess fat during pregnancy has been linked to an increased risk of neurologic disorders in offspring, including attention deficit/hyperactivity disorder, autism, and schizophrenia. In a mouse model, high-fat diet (HFD)-fed offspring have cognitive and executive function deficits as well as whole-genome DNA and promoter-specific hypomethylation in multiple brain regions. Dietary methyl donor supplementation during pregnancy or adulthood has been used to alter DNA methylation and behavior...
June 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28202787/dysregulated-glycine-signaling-contributes-to-increased-impulsivity-during-protracted-alcohol-abstinence
#16
Cristina Irimia, Matthew W Buczynski, Luis A Natividad, Sarah A Laredo, Nathaniel Avalos, Loren H Parsons
Persons with alcoholism who are abstinent exhibit persistent impairments in the capacity for response inhibition, and this form of impulsivity is significantly associated with heightened relapse risk. Brain-imaging studies implicate aberrant prefrontal cortical function in this behavioral pathology, although the underlying mechanisms are not understood. Here we present evidence that deficient activation of glycine and serine release in the ventral medial prefrontal cortex (vmPFC) contributes to increased motor impulsivity during protracted abstinence from long-term alcohol exposure...
February 15, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28198416/a-one-week-5-choice-serial-reaction-time-task-to-measure-impulsivity-and-attention-in-adult-and-adolescent-mice
#17
Esther Remmelink, Uyen Chau, August B Smit, Matthijs Verhage, Maarten Loos
Many psychiatric disorders emerge during adolescence. The study of executive functions in animal models of these disorders critically requires short-duration tasks measuring these functions before the animal ages. Here, a novel 5-choice serial reaction time task (5-CSRTT) protocol is presented, to measure attention and impulsivity within one week, without scheduled food deprivation and with little animal handling. Mice were allowed 24-h/day task access from their home-cage, during which they could self-pace task progression and earn unlimited food rewards depending on task performance...
February 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28093027/effects-of-amphetamine-and-methylphenidate-on-attentional-performance-and-impulsivity-in-the-mouse-5-choice-serial-reaction-time-task
#18
Maitane Caballero-Puntiverio, Ciarán Martin Fitzpatrick, David Pd Woldbye, Jesper Tobias Andreasen
BACKGROUND: Few studies have investigated the effects of conventional attention deficit-hyperactivity disorder (ADHD) medication in the mouse 5-choice serial reaction time task (5-CSRTT), and rat studies have yielded inconsistent results. OBJECTIVE: We aimed to examine the effects of acute methylphenidate (MPH) and amphetamine (AMPH) treatment in the mouse 5-CSRTT. METHODS: Trained male C57Bl/6J mice were tested in a variable stimulus duration schedule...
February 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28070619/theory-of-visual-attention-tva-applied-to-mice-in-the-5-choice-serial-reaction-time-task
#19
C M Fitzpatrick, M Caballero-Puntiverio, U Gether, T Habekost, C Bundesen, S Vangkilde, D P D Woldbye, J T Andreasen, A Petersen
RATIONALE: The 5-choice serial reaction time task (5-CSRTT) is widely used to measure rodent attentional functions. In humans, many attention studies in healthy and clinical populations have used testing based on Bundesen's Theory of Visual Attention (TVA) to estimate visual processing speeds and other parameters of attentional capacity. OBJECTIVES: We aimed to bridge these research fields by modifying the 5-CSRTT's design and by mathematically modelling data to derive attentional parameters analogous to human TVA-based measures...
March 2017: Psychopharmacology
https://www.readbyqxmd.com/read/27824354/serotonergic-modulation-of-waiting-impulsivity-is-mediated-by-the-impulsivity-phenotype-in-humans
#20
S Neufang, A Akhrif, C G Herrmann, C Drepper, G A Homola, J Nowak, J Waider, A G Schmitt, K-P Lesch, M Romanos
In rodents, the five-choice serial reaction time task (5-CSRTT) has been established as a reliable measure of waiting impulsivity being defined as the ability to regulate a response in anticipation of reinforcement. Key brain structures are the nucleus accumbens (NAcc) and prefrontal regions (for example, pre- and infralimbic cortex), which are, together with other transmitters, modulated by serotonin. In this functional magnetic resonance imaging study, we examined 103 healthy males while performing the 5-CSRTT measuring brain activation in humans by means of a paradigm that has been widely applied in rodents...
November 8, 2016: Translational Psychiatry
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