Search Results - "Cheung, THC"

Evidence for a role of 5-HT sub(2C) receptors in the motor aspects of performance, but not the efficacy of food reinforcers, in a progressive ratio schedule by Bezzina, G, Body, S, Cheung, THC, Hampson, CL, Bradshaw, C M, Glennon, J C, Szabadi, E

“…Rationale: 5-Hydroxytryptamine sub(2C) (5-HT sub(2C)) receptor agonists reduce the breakpoint in progressive ratio schedules of reinforcement, an effect that…”
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Hippocampal lesions facilitate instrumental learning with delayed reinforcement but induce impulsive choice in rats by Cheung, Timothy H C, Cardinal, Rudolf N

“…Animals must frequently act to influence the world even when the reinforcing outcomes of their actions are delayed. Learning with action-outcome delays is a…”
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Phenylpiperazine derivatives with selectivity for dopamine D3 receptors modulate cocaine self-administration in rats by Cheung, T.H.C., Nolan, B.C., Hammerslag, L.R., Weber, S.M., Durbin, J.P., Peartree, N.A., Mach, R.H., Luedtke, R.R., Neisewander, J.L.

“…This study examined cocaine self-administration after pretreatments with three structurally related compounds that bind selectively to dopamine D3 receptors…”
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Effects of quinolinic acid-induced lesions of the nucleus accumbens core on inter-temporal choice : a quantitative analysis by BEZZINA, G, CHEUNG, T. H. C, ASGARI, K, HAMPSON, C. L, BODY, S, BRADSHAW, C. M, SZABADI, E, DEAKIN, J. F. W, ANDERSON, I. M

“…There is evidence that lesions of the nucleus accumbens core (AcbC) promote preference for smaller earlier reinforcers over larger delayed reinforcers in…”
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Nicotine-induced plasma corticosterone is attenuated by social interactions in male and female adolescent rats by Pentkowski, N.S., Painter, M.R., Thiel, K.J., Peartree, N.A., Cheung, T.H.C., Deviche, P., Adams, M., Alba, J., Neisewander, J.L.

“…Most smokers begin smoking during adolescence, a period during which social reward is highly influential. Initial exposure to nicotine can produce anxiogenic…”
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Fos expression in the prefrontal cortex and ventral striatum after exposure to a free-operant timing schedule by Valencia-Torres, L., Olarte-Sánchez, C.M., Body, S., Cheung, T.H.C., Fone, K.C.F., Bradshaw, C.M., Szabadi, E.

“…It has been proposed that cortico-striato-thalamo-cortical circuits that incorporate the prefrontal cortex and corpus striatum regulate interval timing…”
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Effect of disconnecting the orbital prefrontal cortex from the nucleus accumbens core on inter-temporal choice behaviour: A quantitative analysis by Bezzina, G., Body, S., Cheung, T.H.C., Hampson, C.L., Bradshaw, C.M., Szabadi, E., Anderson, I.M., Deakin, J.F.W.

“…Previous experiments showed that destruction of the orbital prefrontal cortex (OPFC) or the nucleus accumbens core (AcbC) in rats altered choice between two…”
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Effect of quinolinic acid-induced lesions of the nucleus accumbens core on performance on a progressive ratio schedule of reinforcement: implications for inter-temporal choice by Bezzina, G., Body, S., Cheung, T. H. C., Hampson, C. L., Deakin, J. F. W., Anderson, I. M., Szabadi, E., Bradshaw, C. M.

“…Rationale The nucleus accumbens core (AcbC) is believed to contribute to the control of operant behaviour by reinforcers. Recent evidence suggests that it is…”
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Pharmacological studies of performance on the free-operant psychophysical procedure by Body, S., Cheung, T.H.C., Valencia-Torres, L., Olarte-Sánchez, C.M., Fone, K.C.F., Bradshaw, C.M., Szabadi, E.

“…► The authors’ research on timing in the free-operant psychophysical procedure (FOPP) is reviewed. ► 5-Hydroxytryptamine (5-HT1A, 5-HT2A) and dopamine…”
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Effect of quinolinic acid-induced lesions of the subthalamic nucleus on performance on a progressive-ratio schedule of reinforcement: A quantitative analysis by Bezzina, G., Boon, F.S. den, Hampson, C.L., Cheung, T.H.C., Body, S., Bradshaw, C.M., Szabadi, E., Anderson, I.M., Deakin, J.F.W.

“…The subthalamic nucleus (STN), a major relay in the indirect striatofugal pathway, plays an important role in extrapyramidal motor control. Recent evidence…”
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Attenuation of the effects of d-amphetamine on interval timing behavior by central 5-hydroxytryptamine depletion by Body, S., Cheung, T. H. C., Hampson, C. L., den Boon, F. S., Bezzina, G., Fone, K. C. F., Bradshaw, C. M., Szabadi, E.

“…Rationale Interval timing in the free-operant psychophysical procedure is sensitive to the monoamine-releasing agent d -amphetamine, the D 2 -like dopamine…”
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Quantitative analysis of the effect of lesions of the subthalamic nucleus on intertemporal choice: further evidence for enhancement of the incentive value of food reinforcers by Bezzina, G, Cheung, T. H. C, Body, S, Deakin, J. F. W, Anderson, I. M, Bradshaw, C. M, Szabadi, E

“…Recent evidence suggests that the subthalamic nucleus (STN) is involved in regulating the incentive value of food reinforcers. The objective of this study was…”
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Effect of quinpirole on timing behaviour in the free-operant psychophysical procedure: evidence for the involvement of D sub(2) dopamine receptors by Cheung, THC, Bezzina, G, Hampson, CL, Body, S, Fone, KCF, Bradshaw, C M, Szabadi, E

“…Rationale: Operant timing behaviour is sensitive to dopaminergic manipulations. It has been proposed that this effect is mediated principally by D sub(2)-like…”
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Comparison of the effects of 2,5-dimethoxy-4-iodoamphetamine and D-amphetamine on the ability of rats to discriminate the durations and intensities of light stimuli by Hampson, CL, Body, S, den Boon, FS, Cheung, THC, Bezzina, G, Langley, R W, Fone, KCF, Bradshaw, C M, Szabadi, E

“…Rats' ability to discriminate durations is disrupted by the monoamine-releasing agent D-amphetamine and the 5-HT2 receptor agonist…”
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Effects of d-amphetamine and DOI (2,5-dimethoxy-4-iodoamphetamine) on timing behavior: interaction between D sub(1) and 5-HT sub(2A) receptors by Body, S, Cheung, THC, Bezzina, G, Asgari, K, Fone, KCF, Glennon, J C, Bradshaw, C M, Szabadi, E

“…Rationale: The dopamine-releasing agent d-amphetamine and the 5-HT sub(2) receptor agonist 2,5-dimethoxy-4-iodoamphetamine (DOI) have similar effects on…”
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Tolerance to the effect of 2,5-dimethoxy-4-iodoamphetamine (DOI) on free-operant timing behaviour : interaction between behavioural and pharmacological mechanisms by CHEUNG, T. H. C, BEZZINA, G, BODY, S, FONE, K. C. F, BRADSHAW, C. M, SZABADI, E

“…The psychostimulant d-amphetamine, the D(2/3) dopamine receptor agonist quinpirole and the 5-HT(2) receptor agonist 2,5-dimethoxy-4-iodoamphetamine (DOI) have…”
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Evidence that the effect of 5-HT2 receptor stimulation on temporal differentiation is not mediated by receptors in the dorsal striatum by Body, S, Asgari, K, Cheung, T H C, Bezzina, G, Fone, K F C, Glennon, J C, Bradshaw, C M, Szabadi, E

“…5-HT2 receptor stimulation alters temporal differentiation in free-operant timing schedules. The anatomical location of the receptor population responsible for…”
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Evidence that the effect of 5-HT sub(2) receptor stimulation on temporal differentiation is not mediated by receptors in the dorsal striatum by Body, S, Asgari, K, Cheung, THC, Bezzina, G, Fone, KFC, Glennon, J C, Bradshaw, C M, Szabadi, E

“…5-HT sub(2) receptor stimulation alters temporal differentiation in free- operant timing schedules. The anatomical location of the receptor population…”
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