Conditioning, Operant (Latest Articles)

Latest indexed articles for 'Conditioning, Operant'

Articles 141 to 150 of 200:

Gestational methylmercury exposure selectively increases the sensitivity of operant behavior to cocaine.

30 Mar 2009 Developmental methylmercury (MeHg) exposure alters dopamine neurotransmitter systems, but the selectivity of this and the effects of low, environmentally relevant MeHg exposure regimens are poorly understood. In previous reports, some including ...
rec_pub_19331463-gestational-methylmercury-exposure-selectively-increases-sensitivity.htm

Goal-directed responding is sensitive to lesions to the prelimbic cortex or basolateral nucleus of the amygdala but not to their disconnection.

30 Mar 2009 The current view of instrumental conditioning indicates that performance in the early stage of training is maintained by a representation of the outcome, as indexed by its sensitivity to changes in the value of the reward. In the present study, the ...
rec_pub_19331467-goal-directed-responding-sensitive-lesions-prelimbic-cortex.htm

Dopamine modulates effort-based decision making in rats.

30 Mar 2009 Previous research has implicated dopamine as a modulating factor in choice behavior based on effort. The purpose of the present study was to determine the individual contribution of different dopamine receptors to effort-based decision making in ...
rec_pub_19331447-dopamine-modulates-effort-based-decision-making-rats.htm

Neuropeptide S reinstates cocaine-seeking behavior and increases locomotor activity through corticotropin-releasing factor receptor 1 in mice.

30 Mar 2009 Neuropeptide S (NPS) is a recently discovered neuropeptide that increases arousal and wakefulness while decreasing anxiety-like behavior. Here, we used a self-administration paradigm to demonstrate that intracerebroventricular infusion of NPS ...
rec_pub_19339610-neuropeptide-s-reinstates-cocaine-seeking-behavior-increases.htm

Effects of sodium depletion on detection thresholds for salty taste in rats.

29 Mar 2009 Previous studies, which have mostly focused on concentrated NaCl solution intake, have suggested sodium depletion may be accompanied with salt taste sensory changes. To further investigate whether the function of the salt taste system changes in ...
rec_pub_19341747-effects-sodium-depletion-detection-thresholds-salty-taste-rats.htm

Notch1 signaling, hippocampal neurogenesis and behavioral responses to chronic unpredicted mild stress in adult ischemic rats.

27 Mar 2009 Accumulating evidence indicates that the Notch signaling pathway fulfills important roles in ischemia-stimulated neurogenesis, which may be regarded as an etiological factor in post-stroke depression. Here we explored Notch(1) signaling, hippocampal ...
rec_pub_19336246-notch1-signaling-hippocampal-neurogenesis-behavioral-responses.htm

Subtle but progressive cognitive deficits in the female tgHD hemizygote rat as demonstrated by operant SILT performance.

26 Mar 2009 In accordance with the genetic nature of Huntington's disease (HD), transgenic and knock-in mouse models have been developed that have sought to recapitulate the key features of the human condition. To date, only a single rat model has been ...
rec_pub_19480990-subtle-progressive-cognitive-deficits-female-tghd-hemizygote-rat.htm

Attenuated incubation of cocaine seeking in male rats trained to self-administer cocaine during periadolescence.

26 Mar 2009 RATIONALE AND OBJECTIVES: Although onset of drug use during adolescence appears to increase long-term vulnerability to drug dependence in humans, relatively little is known about extinction and reinstatement of drug seeking after periadolescent ...
rec_pub_19326103-attenuated-incubation-cocaine-seeking-male-rats-trained-self.htm

Interleukin-1 receptor null mutant mice show decreased anxiety-like behavior and enhanced fear memory.

25 Mar 2009 IL-1beta is a proinflammatory cytokine that contributes to psychological stress responses and has been implicated in various psychiatric disorders most notably depression. Preclinical studies also demonstrate that IL-1beta modulates anxiety- and ...
rec_pub_19429130-interleukin-1-receptor-null-mutant-mice-decreased-anxiety-like.htm

SQAB 2008: more than the usual suspects.

25 Mar 2009
rec_pub_19429210-sqab-2008-usual-suspects.htm

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