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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
51

Relative contingency learning in Pavlovian conditioning

Murphy, Robin A. J. January 1999 (has links)
No description available.
52

Involvement of dopamine in the nucleus accumbens and prefrontal cortex in cocaine-associative learning

Ikegami, Aiko, Duvauchelle, Christine L., January 2003 (has links) (PDF)
Thesis (Ph. D.)--University of Texas at Austin, 2003. / Supervisor: Christine L. Duvauchelle. Vita. Includes bibliographical references. Available also from UMI Company.
53

Relative contingency learning in Pavlovian conditioning

Murphy, Robin A. J. January 1999 (has links)
Five experiments with rats were conducted to determine the extent to which associative processes could be used to explain how rats seem able to learn complex CS-US contingencies during Pavlovian conditioning. Rats were exposed to positive, zero and negative CS-US contingencies and conditioned behaviour was compared with predictions derived from both associative models of conditioning and nonassociative normative theories of causal reasoning. A common measure of contingency, Deltap, when used to analyze Pavlovian conditioning requires defining the likelihood of the US in the presence and absence of the CS. Experiments 1 and 2 involved a novel preparation in which, in addition to standard CS presence trials, the absence of the CS was signalled by a second CS, called the trial marker (a lever). Rats were trained to learn relationships in which the CS was either a positive predictor of the US or in which it was unrelated to the US. More conditioned tray entries were observed when the CS signalled an increased likelihood of the US (positive contingency). Consistent with the associative explanations, the trial marker elicited conditioned lever pressing when the CS signalled no change in the likelihood of the US (zero contingency). Experiments 3, 4 and 5 extended the analysis with multiple CSs. These experiments examined whether learning about one CS was determined by its contingency relative to the contingency of other concurrently trained CSs. In experiments 3 and 4 conditioned responding to a moderately predictive CS was determined by its contingency relative to a perfectly predictive CS. Experiment 5 extended this effect to a case in which conditioning was influenced by the presence of a perfect predictor of the absence of the US. Together these results support the hypothesis that relative contingencies determine the strength of conditioned responding. The results are discussed from the perspective of both associative and nonassociative theory.
54

The effect of strangeness on incidental learning.

Ellis, Stephen R. January 1971 (has links)
No description available.
55

Imagery as a mnemonic aid after left temporal lobectomy.

Jones, Marilyn K. January 1971 (has links)
No description available.
56

Cue-induced uncertainty and prediction error effects on nucleus accumbens dopamine and behavoral respones to self-administered cocain and saline /

D'Souza, Manoranjan Savio, January 1900 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2007. / Vita. Includes bibliographical references.
57

Left-right concept acquisition

Schulman, Howard Mark, January 1974 (has links)
Thesis--University of Florida. / Description based on print version record. Typescript. Vita. Bibliography: leaves 67-70.
58

Organization in the acquisition and retention of category instances

Fingeret, Allan Lewis, January 1970 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1970. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
59

The assimilation and retention of hierarchically structured prose materials

Newsom, Robert Stone, January 1970 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1970. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
60

The effects of cues on the paired-associate learning efficiency of educable mental retardates in special classes

Schlagheck, James Francis, January 1975 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1975. / Vita. Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

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