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Semantic Effect on Episodic Associations

Silberman, Yaron and Miikkulainen, Risto and Bentin, Shlomo (2001) Semantic Effect on Episodic Associations. [Conference Paper]

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Abstract

We examined the influence of the pre-existing organiza-tion of the semantic memory on forming new episodic associations between words. Testing human subjects' performance we found that a semantic relationship be-tween words facilitates forming episodic associations be-tween them. Furthermore, the amount of facilitation in-creases linearly as a function of the number of co-occurrence of the words, up to a ceiling. Constrained by these empirical findings we developed a computational model, based on the theory of spreading activation over semantic networks. The model uses self-organizing maps to represent semantic relatedness, and lateral connections to represent the episodic associations. When two words are presented to the model, the interaction of the two ac-tivation waves is summed and added to the direct lateral connection between them. The main result is that the model is capable of replicating the empirical results. The model also makes several testable predictions: First, it should be easier to form an association from a word with few semantic neighbors to a word with many se-mantic neighbors than vice-versa. Second, after associat-ing an unrelated word pair it should be easier to associate another two words each related to one of the words in the first pair. Third, a less focused activation wave, which may be the cause of schizophrenic thought disor-der, should decrease the advantage in learning rate of re-lated over unrelated pairs.

Item Type:Conference Paper
Keywords:Semantic memory, episodic memory, self-organizing maps, semantic maps, associations
Subjects:Psychology > Cognitive Psychology
Computer Science > Neural Nets
Neuroscience > Neural Modelling
ID Code:1910
Deposited By:Silberman, Yaron
Deposited On:22 Nov 2001
Last Modified:11 Mar 2011 08:54

References in Article

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Burgess, C. & Lund, K. (1997). Modelling parsing con-straints with high-dimensional context space. Lan-guage and Cognitive Processes, 12, 1-34.

Collins, A. M., & Loftus, E. F. (1975). A spreading-activation theory of semantic processing. Psychologi-cal Review, 82, 407-428.

Dagenbach, D., Horst, S., and Carr, T. H. (1990). Add-ing new information to semantic memory. Journal of Experimental Psychology: Learning, Memory and Cognition, 16, 581-591.

Fischler, I. (1977). Semantic facilitation without asso-ciation in a lexical decision task. Memory & Cogni-tion, 5, 335-339.

Hinton, G. E. (1990). Mapping part-whole hierarchies into connectionist networks. Artificial Intelligence, 46, 47-75.

Hume, D. (1738/1962). A Treatise of Human Nature. London: J.M. Dent & Sons, Ltd.

Knudsen, E. I., Lac, S., & Esterly, S. D. (1987). Com-putational maps in the brain. Annual Review of Neu-roscience, 10, 41-65.

Kohonen, T. (1995). Self-Organizing Maps. Springer.

Koriat, A. (1981). Semantic facilitation in lexical deci-sion as a function of prime-target association. Mem-ory & Cognition, 9, 587-598.

Li, P. (2000). The acquisition of tense-aspect morphol-ogy in a self-organizing feature map model. Proceed-ings of the 22nd Annual Conference of the Cognitive Science Society (pp.304-309). Lawrence Erlbaum.

Lowe, W. (1997). Semantic representation and priming in a self-organizing lexicon. Proceedings of the 4th Neural Computation and Psychology Workshop (pp. 227-239). Springer-Verlag.

Masson, M. E. J. (1995). A Distributed Memory Model for Semantic Priming. Journal of Experimental Psy-chology: Learning, Memory & Cognition, 21, 3-23.

McKoon, G. & Ratcliff, R. (1979). Priming in episodic and semantic memory. Journal of verbal learning and verbal behavior, 18, 463-480.

Meyer, D. E. & Schvaneveldt, R. W. (1971). Facilita-tion in recognizing pairs of words. Journal of Ex-perimental Psychology, 90, 227-234.

Miikkulainen, R. (1992). Trace feature map. Biological Cybernetics, 66, 273-282.

Moss, H. E., Hare, M. L., Day, P., & Tyler, L. K. (1994). A distributed memory model of the associa-tive boost in semantic priming. Connection Science, 6, 413-427.

Moss, H. E., Ostrin, R. K., Tyler, L. K., & Marslen-Wilson, W. D. (1995). Accessing different types of lexical semantic information: Evidence from Priming. Journal of Experimental Psychology: Learning, Memory and Cognition, 21, 863-883.

Neely, J. H. (1991). Semantic priming effects in visual word recognition: A selective review of current find-ings and theories. In D. Besner, & G. W. Humphreys (Eds.), Basic processes in reading: Visual word rec-ognition. Hillsdale, NJ: Lawrence Erlbaum.

Plaut, D. C. (1995). Semantic and associative priming in a distributed attractor network. Proceedings of the 17th Annual Conference of the Cognitive Science So-ciety (pp. 37-42). Mahwah, NJ: Lawrence Erlbaum.

Ritter, H. & Kohonen, T. (1989). Self-organizing se-mantic maps. Biological Cybernetics, 61, 241-254.

Shelton, J. R., & Martin, R. C. (1992). How semantic is semantic priming? Journal of Experimental Psychol-ogy: Learning, Memory & Cognition, 18, 1191-1210.

Silberman, Y. & Bentin, S. (submitted). Semantic boost of forming episodic associations.

Spitzer, M. (1997). A cognitive neuroscience view of schizophrenic thought disorder. Schizophrenia Bulle-tin, 23, 29-50.

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