Using the Entropy Reduction incremental complexity metric, we relate high gamma power signals from the brains of epileptic patients to incremental stages of syntactic analysis in English and French. We find that signals recorded intracranially from the anterior Inferior Temporal Sulcus (aITS) and the posterior Inferior Temporal Gyrus (pITG) correlate with wordby- word Entropy Reduction values derived from phrase structure grammars for those languages. In the anterior region, this correlation persists even in combination with surprisal co-predictors from PCFG and ngram models. The result confirms the idea that the brain's temporal lobe houses a parsing function, one whose incremental processing difficulty profile reflects changes in grammatical uncertainty.
CITATION STYLE
Nelson, M. J., Dehaene, S., Pallier, C., & Hale, J. T. (2017). Entropy reduction correlates with temporal lobe activity. In CMCL 2017 - Cognitive Modeling and Computational Linguistics at the 15th Conference of the European Chapter of the Association for Computational Linguistics, EACL 2017 - Proceedings (pp. 1–10). Association for Computational Linguistics (ACL). https://doi.org/10.18653/v1/w17-0701
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