Conditional Discrimination
Mostrando 37-47 de 47 artigos, teses e dissertações.
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37. Efeitos da solicitação de relatos sobre resolução de problema no desempenho de escolher: uma replicação a Simonassi, Tourinho e Silva (2001)
The present study was accomplished based on the work of Simonassi, Tourinho and Silva with the objectives to verify: a) the effectiveness of experimental contingencies programmed to public cover responses. b) the relation between description of self behaviour and experimental contingencies in a problem resolution situation so that it becomes available in a r
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/06/2003
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38. CONTROLE POR ESTÍMULOS SIMPLES E COMPLEXOS: EFEITOS DOS PROCEDIMENTOS DE DISCRIMINAÇÃO SIMPLES E DISCRIMINAÇÃO CONDICIONAL EM CRIANÇAS
Quando apenas uma dimensão de um estímulo complexo controla o responder do indivíduo, diz-se que aconteceu o fenômeno de controle de estímulo restrito. Este estudo objetivou estudar tal fenômeno em 8 crianças normais, entre 3 anos e 9 meses até 4 anos e 6 meses, que não reconheciam as letras: M, P, A, E, B, C, O, I, utilizando dois procedimentos; di
Publicado em: 2003
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39. Comparison of Pavlovian serial conditional discrimination in rats and hamsters in the same experimental situation
The present study compares behavioral changes between two distinct rodent groups, hamsters (Mesocricetus auratus) and Wistar rats, when submitted in the same homogeneous experimental situations to a serial conditional discrimination procedure which involves water deprivation and the processing of temporal variables. Both hamsters and rats acquired serial pos
Brazilian Journal of Medical and Biological Research. Publicado em: 2001-12
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40. Desenvolvimento de classificadores de máxima verossimilhança e ICM para imagens SAR / Development of maximum likelihood and ICM classifiers for SAR images
The purpose of this study is to implement, test and apply a Maximurn Likelihood Classifier (MLC) and a userfriendly contextual Markovian classifier, which use the distributions most appropriate to the Synthethic Aperture Radar (SAR) data. This study presents the main distributions to the SAR data and how several of these distributions arise from the multipli
Publicado em: 1996
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41. Conditional Discrimination in the Intraverbal Relation: A Review and Recommendations for Future Research
Conditional discrimination is inherent in the intraverbal relation when one verbal stimulus alters the evocative effect of another verbal stimulus and they collectively evoke an intraverbal response. Rarely in research on conditional discriminations have both conditional and discriminative stimuli been vocal verbal and rarely have the responses been topograp
Association for Behavior Analysis International.
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42. Perirhinal Cortex Lesions Impair Context Aversion Learning
Rats with perirhinal cortex lesions were compared with sham controls on a conditional discrimination in which saccharin was paired with LiCl in context 1, but paired with saline in context 2. Perirhinal-lesioned rats were slightly slower to acquire the discrimination but reached control levels by the end of acquisition. Both groups showed transfer to fam
Cold Spring Harbor Laboratory Press.
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43. A Theory Of Attending And Reinforcement In Conditional Discriminations
A model of conditional discrimination performance (Davison & Nevin, 1999) is combined with the notion that unmeasured attending to the sample and comparison stimuli, in the steady state and during disruption, depends on reinforcement in the same way as predicted for overt free-operant responding by behavioral momentum theory (Nevin & Grace, 2000). The rate o
Society for the Experimental Analysis of Behavior.
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44. Understanding biological computation: reliable learning and recognition.
We experimentally examine the consequences of the hypothesis that the brain operates reliably, even though individual components may intermittently fail, by computing with dynamical attractors. Specifically, such a mechanism exploits dynamic collective behavior of a system with attractive fixed points in its phase space. In contrast to the usual methods of r
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45. Overexpression of hAPPswe Impairs Rewarded Alternation and Contextual Fear Conditioning in a Transgenic Mouse Model of Alzheimer's Disease
One of the hallmarks of the pathology in Alzheimer's disease is the deposition of amyloid plaques throughout the brain, especially within the hippocampus and amygdala. Transgenic mice that overexpress the Swedish mutation of human amyloid precursor protein (hAPPswe; Tg2576) show age-dependent memory deficits in hippocampus-dependent learning tasks. However,
Cold Spring Harbor Laboratory Press.
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46. Theta oscillations and sensorimotor performance
Performance and cognitive effort in humans have recently been related to amplitude and multisite coherence of alpha (7-12 Hz) and theta (4-7 Hz) band electroencephalogram oscillations. I examined this phenomenon in rats by using theta band oscillations of the local field potential to signify sniffing as a sensorimotor process. Olfactory bulb (OB) theta oscil
National Academy of Sciences.
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47. G protein subunits and the stimulation of phospholipase C by Gs-and Gi-coupled receptors: Lack of receptor selectivity of Galpha(16) and evidence for a synergic interaction between Gbeta gamma and the alpha subunit of a receptor activated G protein.
Stimulatory guanine nucleotide binding protein (Gs)-coupled receptors activated by luteinizing hormone, vasopressin, and the catecholamine isoproterenol (luteinizing hormone receptor, type 2 vasopressin receptor, and types 1 and 2 beta-adrenergic receptors) and the Gi-coupled M2 muscarinic receptor (M2R) were expressed transiently in COS cells, alone and in