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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Jirenhed, Dan-anders Rasmussen, Anders Hesslow, Germund Zucca, Riccardo Johansson, Fredrik |
| Description | Author Affiliation: Rasmussen A ( Associative Learning Group, Department of Experimental Medical Science, Lund University, 221 00 Lund, Sweden); Zucca R ( Laboratory for Synthetic Perceptive, Emotive, and Cognitive Systems (SPECS), N-RAS, DTIC, Universitat Pompeu Fabra, 08018 Barcelona, Spain.); Johansson F ( Associative Learning Group, Department of Experimental Medical Science, Lund University, 221 00 Lund, Sweden); Jirenhed DA ( Associative Learning Group, Department of Experimental Medical Science, Lund University, 221 00 Lund, Sweden); Hesslow G ( Associative Learning Group, Department of Experimental Medical Science, Lund University, 221 00 Lund, Sweden); |
| Abstract | A central tenet of Rescorla and Wagner's model of associative learning is that the reinforcement value of a paired trial diminishes as the associative strength between the presented stimuli increases. Despite its fundamental importance to behavioral sciences, the neural mechanisms underlying the model have not been fully explored. Here, we present findings that, taken together, can explain why a stronger association leads to a reduced reinforcement value, within the context of eyeblink conditioning. Specifically, we show that learned pause responses in Purkinje cells, which trigger adaptively timed conditioned eyeblinks, suppress the unconditional stimulus (US) signal in a graded manner. Furthermore, by examining how Purkinje cells respond to two distinct conditional stimuli and to a compound stimulus, we provide evidence that could potentially help explain the somewhat counterintuitive overexpectation phenomenon, which was derived from the Rescorla-Wagner model. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 45 |
| Volume Number | 112 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2015-11-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Association Learning Physiology Conditioning, Classical Models, Psychological Purkinje Cells Reinforcement (Psychology) Analysis Of Variance Blinking Extinction, Psychological Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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