A Study of Word Complexity Under Conditions of Non-experimental, Natural Overt Speech Production Using ECoG
The linguistic complexity of words has largely been studied on the behavioral level and in experimental settings. Only little is known about the neural processes underlying it in uninstructed, spontaneous conversations. We built up a multimodal neurolinguistic corpus composed of synchronized audio,...
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| Format: | Article |
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Frontiers Media S.A.
2022-02-01
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| Series: | Frontiers in Human Neuroscience |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fnhum.2021.711886/full |
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| author | Olga Glanz Olga Glanz Olga Glanz Olga Glanz Olga Glanz Olga Glanz Marina Hader Marina Hader Andreas Schulze-Bonhage Andreas Schulze-Bonhage Peter Auer Peter Auer Peter Auer Tonio Ball Tonio Ball Tonio Ball |
| author_facet | Olga Glanz Olga Glanz Olga Glanz Olga Glanz Olga Glanz Olga Glanz Marina Hader Marina Hader Andreas Schulze-Bonhage Andreas Schulze-Bonhage Peter Auer Peter Auer Peter Auer Tonio Ball Tonio Ball Tonio Ball |
| author_sort | Olga Glanz |
| collection | DOAJ |
| description | The linguistic complexity of words has largely been studied on the behavioral level and in experimental settings. Only little is known about the neural processes underlying it in uninstructed, spontaneous conversations. We built up a multimodal neurolinguistic corpus composed of synchronized audio, video, and electrocorticographic (ECoG) recordings from the fronto-temporo-parietal cortex to address this phenomenon based on uninstructed, spontaneous speech production. We performed extensive linguistic annotations of the language material and calculated word complexity using several numeric parameters. We orthogonalized the parameters with the help of a linear regression model. Then, we correlated the spectral components of neural activity with the individual linguistic parameters and with the residuals of the linear regression model, and compared the results. The proportional relation between the number of consonants and vowels, which was the most informative parameter with regard to the neural representation of word complexity, showed effects in two areas: the frontal one was at the junction of the premotor cortex, the prefrontal cortex, and Brodmann area 44. The postcentral one lay directly above the lateral sulcus and comprised the ventral central sulcus, the parietal operculum and the adjacent inferior parietal cortex. Beyond the physiological findings summarized here, our methods may be useful for those interested in ways of studying neural effects related to natural language production and in surmounting the intrinsic problem of collinearity between multiple features of spontaneously spoken material. |
| first_indexed | 2024-12-24T03:41:15Z |
| format | Article |
| id | doaj.art-81afda868a7046c297e8b4f9bc81d249 |
| institution | Directory Open Access Journal |
| issn | 1662-5161 |
| language | English |
| last_indexed | 2024-12-24T03:41:15Z |
| publishDate | 2022-02-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Human Neuroscience |
| spelling | doaj.art-81afda868a7046c297e8b4f9bc81d2492022-12-21T17:16:53ZengFrontiers Media S.A.Frontiers in Human Neuroscience1662-51612022-02-011510.3389/fnhum.2021.711886711886A Study of Word Complexity Under Conditions of Non-experimental, Natural Overt Speech Production Using ECoGOlga Glanz0Olga Glanz1Olga Glanz2Olga Glanz3Olga Glanz4Olga Glanz5Marina Hader6Marina Hader7Andreas Schulze-Bonhage8Andreas Schulze-Bonhage9Peter Auer10Peter Auer11Peter Auer12Tonio Ball13Tonio Ball14Tonio Ball15GRK 1624 “Frequency Effects in Language,” University of Freiburg, Freiburg, GermanyDepartment of German Linguistics, University of Freiburg, Freiburg, GermanyThe Hermann Paul School of Linguistics, University of Freiburg, Freiburg, GermanyBrainLinks-BrainTools, University of Freiburg, Freiburg, GermanyNeurobiology and Biophysics, Faculty of Biology, University of Freiburg, Freiburg, GermanyTranslational Neurotechnology Lab, Department of Neurosurgery, Faculty of Medicine, Medical Center—University of Freiburg, University of Freiburg, Freiburg, GermanyBrainLinks-BrainTools, University of Freiburg, Freiburg, GermanyTranslational Neurotechnology Lab, Department of Neurosurgery, Faculty of Medicine, Medical Center—University of Freiburg, University of Freiburg, Freiburg, GermanyDepartment of Neurosurgery, Faculty of Medicine, Epilepsy Center, Medical Center—University of Freiburg, University of Freiburg, Freiburg, GermanyBernstein Center Freiburg, University of Freiburg, Freiburg, GermanyGRK 1624 “Frequency Effects in Language,” University of Freiburg, Freiburg, GermanyDepartment of German Linguistics, University of Freiburg, Freiburg, GermanyThe Hermann Paul School of Linguistics, University of Freiburg, Freiburg, GermanyBrainLinks-BrainTools, University of Freiburg, Freiburg, GermanyTranslational Neurotechnology Lab, Department of Neurosurgery, Faculty of Medicine, Medical Center—University of Freiburg, University of Freiburg, Freiburg, GermanyBernstein Center Freiburg, University of Freiburg, Freiburg, GermanyThe linguistic complexity of words has largely been studied on the behavioral level and in experimental settings. Only little is known about the neural processes underlying it in uninstructed, spontaneous conversations. We built up a multimodal neurolinguistic corpus composed of synchronized audio, video, and electrocorticographic (ECoG) recordings from the fronto-temporo-parietal cortex to address this phenomenon based on uninstructed, spontaneous speech production. We performed extensive linguistic annotations of the language material and calculated word complexity using several numeric parameters. We orthogonalized the parameters with the help of a linear regression model. Then, we correlated the spectral components of neural activity with the individual linguistic parameters and with the residuals of the linear regression model, and compared the results. The proportional relation between the number of consonants and vowels, which was the most informative parameter with regard to the neural representation of word complexity, showed effects in two areas: the frontal one was at the junction of the premotor cortex, the prefrontal cortex, and Brodmann area 44. The postcentral one lay directly above the lateral sulcus and comprised the ventral central sulcus, the parietal operculum and the adjacent inferior parietal cortex. Beyond the physiological findings summarized here, our methods may be useful for those interested in ways of studying neural effects related to natural language production and in surmounting the intrinsic problem of collinearity between multiple features of spontaneously spoken material.https://www.frontiersin.org/articles/10.3389/fnhum.2021.711886/fullnatural behaviorspontaneous speech productionECoGword complexityarticulation |
| spellingShingle | Olga Glanz Olga Glanz Olga Glanz Olga Glanz Olga Glanz Olga Glanz Marina Hader Marina Hader Andreas Schulze-Bonhage Andreas Schulze-Bonhage Peter Auer Peter Auer Peter Auer Tonio Ball Tonio Ball Tonio Ball A Study of Word Complexity Under Conditions of Non-experimental, Natural Overt Speech Production Using ECoG Frontiers in Human Neuroscience natural behavior spontaneous speech production ECoG word complexity articulation |
| title | A Study of Word Complexity Under Conditions of Non-experimental, Natural Overt Speech Production Using ECoG |
| title_full | A Study of Word Complexity Under Conditions of Non-experimental, Natural Overt Speech Production Using ECoG |
| title_fullStr | A Study of Word Complexity Under Conditions of Non-experimental, Natural Overt Speech Production Using ECoG |
| title_full_unstemmed | A Study of Word Complexity Under Conditions of Non-experimental, Natural Overt Speech Production Using ECoG |
| title_short | A Study of Word Complexity Under Conditions of Non-experimental, Natural Overt Speech Production Using ECoG |
| title_sort | study of word complexity under conditions of non experimental natural overt speech production using ecog |
| topic | natural behavior spontaneous speech production ECoG word complexity articulation |
| url | https://www.frontiersin.org/articles/10.3389/fnhum.2021.711886/full |
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