INTERACTIONS BETWEEN HEMISPHERES WHEN DISAMBIGUATING AMBIGUOUS HOMOGRAPH WORDS DURING SILENT READING

Zohar Eviatar, Hananel Hazan, Larry Manevitz, Orna Peleg, Rom Timor

2010

Abstract

A model of certain aspects of the cortex related to reading is developed corresponding to ongoing exploration of psychophysical and computational experiments on how the two hemispheres work in humans. The connectivity arrangements between modelled areas of orthography, phonology and semantics are according to the theories of Eviatar and Peleg, in particular with distinctions between the connectivity in the right and left hemisphere. The two hemispheres are connected and interact both in training and testing in a reasonably "natural" way. We found that the RH (right hemisphere) serves to maintain alternative meanings under this arrangement longer than the LH for homophones. This corresponds to the usual theories (about homographs) while, surprisingly, the LH maintains alternative meanings longer then the RH for heterophones. This allows the two hemispheres, working together to resolve ambiguities regardless of when the disambiguating information arrives. Human experiments carried out subsequent to these results bear this surprising result out.

References

  1. Iacoboni M, Zaidel E (1996). Hemispheric independence in word recognition: evidence from unilateral and bilateral presentations. Brain Lang 53:121-140 14.
  2. Grindrod, C., & Baum, S. (2003). Sensitivity to local sentence context information in lexical ambiguity resolution: Evidence from left-right-hemispheredamaged individuals, Brain & Language, 85, 502-523.
  3. Peleg, O., Eviatar, Z., Hazan, H, & Manevitz, L. (2007). Differences and Interactions between Cerebral Hemispheres When Processing Ambiguous Homographs. Lecture Notes in Computer Science (LNAI) publication no.4840, 'Attention in Cognitive Systems', L. Paletta and E. Rome, Eds., pp. 367-380.
  4. Weems, S. & Reggia, J. (2004). Hemispheric specialization and independence for word recognition: Acomparison of three computational models, Brain and Language 89 554-568.
  5. Monaghan, P. & Pollmann, S. (2003). Division of labour between the hemispheres for complex but not simple tasks: An implemented connectionist model. Journal of Experimental Psychology: General, 132, 379-399.
  6. Titone, D. A. 1998. Hemispheric differences in context sensitivity during lexical ambiguity resolution. Brain and Language, 65, 361-394.
  7. Peleg, O., Giora, R., & Fein, O. (2004). Contextual strength: The Whens and hows of context effects. In I. Noveck & D. Sperber (Eds.), Experimental Pragmatics (pp.172-186). Basingstoke: Pagrave.
  8. Burgess, C., & Simpson, G. B. (1988). Cerebral hemispheric mechanisms in the retrieval of ambiguous word meanings. Brain and Language, 33 (pp. 86-103).
  9. Kawamoto, A. H. (1993). Nonlinear dynamics in the resolution of lexical ambiguity: A parallel distributed processing account. Journal of Memory and Language, 32, 474-516.
  10. Zaidel, E., & Peters, A. M. (1981). phonological encoding and ideographic reading by the disconnected right hemisphere: Two case Studies. Brain & Language, 14, 205- 234.
  11. Peleg O. and Eviatar Z (2009). Semantic asymmetries are modulated by phonological asymmetries: Evidence from the disambiguation of homophonic versus heterophonic homographs. Brain and Cognition 70 (pp. 154-162).
  12. Friston K. J., Harrison L. and Penny W. (2009). Dynamic causal modelling. Neuroimage 2003 Aug;19(4) (pp. 1273-302).
  13. Peleg, O., Manevitz, L., Hazan, H., Eviatar, Z., (2010). Two Hemispheres - Two Networks A Computational Model Explaining Hemispheric Asymmetries While Reading Ambiguous Words. Annals of Mathematics and Artificial Intelligence (AMAI). - to appear.
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Paper Citation


in Harvard Style

Eviatar Z., Hazan H., Manevitz L., Peleg O. and Timor R. (2010). INTERACTIONS BETWEEN HEMISPHERES WHEN DISAMBIGUATING AMBIGUOUS HOMOGRAPH WORDS DURING SILENT READING . In Proceedings of the International Conference on Fuzzy Computation and 2nd International Conference on Neural Computation - Volume 1: ICNC, (IJCCI 2010) ISBN 978-989-8425-32-4, pages 271-278. DOI: 10.5220/0003059802710278


in Bibtex Style

@conference{icnc10,
author={Zohar Eviatar and Hananel Hazan and Larry Manevitz and Orna Peleg and Rom Timor},
title={INTERACTIONS BETWEEN HEMISPHERES WHEN DISAMBIGUATING AMBIGUOUS HOMOGRAPH WORDS DURING SILENT READING },
booktitle={Proceedings of the International Conference on Fuzzy Computation and 2nd International Conference on Neural Computation - Volume 1: ICNC, (IJCCI 2010)},
year={2010},
pages={271-278},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003059802710278},
isbn={978-989-8425-32-4},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Fuzzy Computation and 2nd International Conference on Neural Computation - Volume 1: ICNC, (IJCCI 2010)
TI - INTERACTIONS BETWEEN HEMISPHERES WHEN DISAMBIGUATING AMBIGUOUS HOMOGRAPH WORDS DURING SILENT READING
SN - 978-989-8425-32-4
AU - Eviatar Z.
AU - Hazan H.
AU - Manevitz L.
AU - Peleg O.
AU - Timor R.
PY - 2010
SP - 271
EP - 278
DO - 10.5220/0003059802710278