Partial extinction of a conditioned context enhances preference for elements previously associated with cocaine but not with chocolate

2013 ◽  
Vol 120 ◽  
pp. 1-10 ◽  
Author(s):  
C. Orsini ◽  
A. Bonito-Oliva ◽  
C. Montanari ◽  
D. Conversi ◽  
S. Cabib
Keyword(s):  
Partial Extinction

scholarly journals Slower reacquisition after partial extinction in human contingency learning.

2017 ◽  
Vol 43 (1) ◽  
pp. 81-93 ◽  
Author(s):  
Joaquín Morís ◽  
Itxaso Barberia ◽  
Miguel A. Vadillo ◽  
Ainhoa Andrades ◽  
Francisco J. López
Keyword(s):  
Contingency Learning ◽  
Human Contingency Learning ◽  
Partial Extinction

scholarly journals Periodic partial extinction in acoustically coupled fuel droplet combustion

2018 ◽  
Vol 189 ◽  
pp. 46-61 ◽  
Author(s):  
John W. Bennewitz ◽  
Dario Valentini ◽  
Miguel A. Plascencia ◽  
Andres Vargas ◽  
Hyung Sub Sim ◽  
...  
Keyword(s):  
Droplet Combustion ◽  
Fuel Droplet ◽  
Partial Extinction

scholarly journals Dynamic Behaviors of a Competitive System with Beddington-DeAngelis Functional Response

2019 ◽  
Vol 2019 ◽  
pp. 1-12 ◽  
Author(s):  
Shengbin Yu ◽  
Fengde Chen
Keyword(s):  
Periodic Solution ◽  
Numerical Simulations ◽  
Functional Response ◽  
Recent Literature ◽  
Sufficient Conditions ◽  
Almost Periodic Solution ◽  
Almost Periodic ◽  
Competitive System ◽  
Dynamic Behaviors ◽  
Partial Extinction

This article studies a competitive system with Beddington-DeAngelis functional response and establishes sufficient conditions on permanence, partial extinction, and the existence of a unique almost periodic solution for the system. The results supplement and generalize the main conclusions in recent literature. Numerical simulations have been presented to validate the analytical results.

Effect of Partial Reinforcement on the Extinction of a Blocked Response

1968 ◽  
Vol 23 (2) ◽  
pp. 475-481 ◽  
Author(s):  
Jack I. Bradley ◽  
Walter A. Nagle ◽  
Girard V. Smith ◽  
Peter R. Welgan
Keyword(s):  
Partial Reinforcement Effect ◽  
Reinforcement Schedule ◽  
Fixed Ratio ◽  
Partial Reinforcement ◽  
Ratio Schedule ◽  
Variable Ratio ◽  
Initial Training ◽  
Reinforcement Effect ◽  
Schedule Of Reinforcement ◽  
Partial Extinction

These experiments assessed (a) the Partial Reinforcement Effect (PRE) when extinction was measured by the perseverative behavior following the blocking of a learned maze route and (b) the effects of two conditions of partial extinction on the same perseverative behavior. Initial training of the rat Ss varied in both number of trials and reinforcement schedule. Perseverative behavior was evaluated by recording cumulative errors. The results indicated that the perseverative behavior increased with an increase in the number of training trials. Perseverative behavior was also observed to be greatest following 100% rather than a ratio schedule of reinforcement, a fixed ratio resulting in greater perseveration than a variable ratio. When 10 nonreinforced trials or 10 nonreinforced goal placements followed 100% reinforced training, the perseverative behavior following blocking was reduced. These results indicate that the typical PRE which has been observed (when the extinction series includes the performance of the instrumental act) is dependent on the stimulus cues provided by the change in reinforcement schedule.

scholarly journals Zonation of Lithuanian Silurian graptolites and other faunal groups

2020 ◽  
Vol 5 (2) ◽  
Author(s):  
Juozas Paškevičius
Keyword(s):  
Low Energy ◽  
Contour Lines ◽  
Open Sea ◽  
History Of ◽  
Partial Extinction ◽  
The Baltic ◽  
Baltic Area ◽  
Marine Basin ◽  
Equal Thickness

The Baltic Silurian Basin, Lithuanian Depression and other structures are shown in the map, with marked by isopachs (contour lines of equal thickness) of the Silurian beds with graptolites and fauna of other groups. The Silurian facies vary greatly in the Depression – from clayey open-sea deep shelf to carbonaceous ones of shallow shelf, and low-energy lagoon facies. The history of investigations on East Baltic area graptolites begins from 1953–1958, when 15 graptolite zones were singled out, and proceeds to 35 zones defined now. Peculiarities in the graptolite scale from C. cyphus to N. lochkovensis inclusive are discussed. Transgressions and regressions of the Silurian marine basin, as well as shorter transgressions with wedges and graptolites of clayey facies shifted towards basin shores and regressions with partial extinction of graptolites are elucidated. During these investigations the graptolite scale has been detailed and added with new zones. Graptolite evolution in the zones has been analysed. Stages of graptolite evolution are analysed in relation to the following bioevents: Stačiūnai, Likėnai, Valgu, Ireviken, Mulde, Linde, Lau, Klev and Šilalė. Finally, two tables present graptolite zone correlation with conodont, vertebrate and ostracod zones revealing a highly detailed stratigraphy of the Lithuanian Silurian.

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