Laura Gwilliams

Doctoral Student

I am a PhD student in NYU's Cognition and Perception Program, working under the supervision of Alec Marantz and David Poeppel.

My research explores how the human brain encodes lexical and sub-lexical representations, and how these representations are accessed during language comprehension. Thus far I have primarily addressed the role of morphological structure in the processing of spoken words: How does the system recognise morphemes from a speech stream? Do we form predictions based on probability distributions over morphemes or whole words? (Gwilliams & Marantz, 2015).

More recently, my research has turned to the question of phonological ambiguity and its resolution. Presently I am investigating how an acoustically continuous speech signal is categorised into phonemes, and how lexical context is integrated to both resolve ambiguity and improve accuracy of acoustic discretisation.

In order to characterise the temporal-spatial dynamics of these processes, I have predominantly utilised magnetoencephalography (MEG). Accordingly, some of my work has also addressed methodological concerns surrounding the use of MEG - specifically which source estimation constraints provide the best experimental sensitivity when localising neural responses (Gwilliams, Lewis & Marantz, In Press).

laura.gwilliams@nyu.edu  personal webpage

MorphLab Publications

2016

Brodbeck, C., Gwilliams, L. & Pylkkänen, L. (2016). Language in context: MEG evidence for modality general and specific responses to reference resolution. eNeuro . DOI: https://doi.org/10.1523/ENEURO.0145-16.2016

Gwilliams, L., Lewis, G., & Marantz, A. (2016). Functionally localising letter-specific responses in time, space, and current polarity using magnetoencephalography. NeuroImage, 132, 320-333. DOI: http://dx.doi.org/10.1016/j.neuroimage.2016.02.057

2015

Brodbeck, C., Gwilliams, L., & Pylkkänen, L. (2015). EEG can track the time course of successful reference resolution in small visual worlds. Frontiers in Psychology, 6, 1-7. DOI: http://dx.doi.org/10.3389/fpsyg.2015.01787

Gwilliams, L., & Marantz, A. (2015). Tracking non-linear prediction in a linear speech stream: Influence of morphological structure on spoken word recognition. Brain and Language, 147, 1-13. DOI: http://dx.doi.org/10.1016/j.bandl.2015.04.006

Gwilliams, L., Monahan, P.J., & Samuel, A.G. (2015). Sensitivity to morphological composition in Spoken Word Recognition: Evidence from grammatical and lexical decision tasks. Journal of Experimental Psychology: Language, Memory and Cognition. DOI: http://dx.doi.org/10.1037/xlm0000130

Politzer-Ahles, S., & Gwilliams, L. (2015). Involvement of prefrontal cortex in scalar implicatures: evidence from magnetoencephalography. Language, Cognition and Neuroscience. DOI: http://dx.doi.org/10.1080/23273798.2015.1027235

MorphLab Posters & Presentations

2016

Gwilliams, L., Linzen, T., Neophytou, K., Poeppel., D & Marantz, A. (2016, September). Tracking lexical garden-path resolution with MEG: Phonological commitment and sensitivity to subphonemic detail are independent. Presentation at AMLAP 2016, Bilbao, Basque Country.

Gwilliams, L., Linzen, T., Neophytou, K., Poeppel., D & Marantz, A. (2016, August). Tracking lexical garden-path resolution with MEG: Phonological commitment and sensitivity to subphonemic detail are independent. Poster presented at the 2016 Society for the Neurobiology of Language Conference, London, UK.

Gwilliams, L., Linzen, T., Neophytou, K., Warnke, L., Poeppel., D & Marantz, A. (2016, April). Early and asymmetric sensitivity to phonological boundaries and within-category variation across hemispheres. Poster presented at the 2016 CNS Annual meeting, New York, USA.

Brodbeck, C., Gwilliams, L. & Pylkkänen, L. (2016, April). Amodal reference resolution in medial parietal cortex. Poster presented at the 2016 CNS Annual meeting, New York, USA.

Gwilliams, L., Linzen, T., Neophytou, K., Warnke, L., Poeppel., D & Marantz, A. (2016, March). Phoneme ambiguity is reflected very early in primary auditory cortex. Poster presented at the 29th Annual CUNY Conference on Human Sentence Processing, Florida, USA.

Brodbeck, C., Gwilliams, L. & Pylkkänen, L. (2016, March). Modality general and specific brain responses during reference resolution. Poster presented at the 29th Annual CUNY Conference on Human Sentence Processing, Florida, USA.

Gwilliams, L. & Marantz, A. (2016, February). Taking Morphology Seriously: MEG Studies of Morphological Representations. Presentation at 17th International Morphology Meeting, Vienna, Austria.

Stockall, L., Manouilidou, C., Gwilliams, L. & Marantz, A. (2016, February). Un/Re-packing argument and event structure restrictions on prefixation: MEG evidence. Workshop on the syntax of argument structure: empirical advancements and theoretical relevance. Jahrestagung der Deutschen Gesellschaft für Sprachwissenschaft, Leipzig, Germany.

2015

Gwilliams, L. & Marantz, A. (2015, October). Representations of the stems you can't see: A MEG study of morphological decomposition. Poster presented at the Society for the Neurobiology of Language Conference, Chicago, USA.

Stockall, L., Gwilliams, L., Manouilidou, C. & Marantz, A. (2015, October). Access to lexical category and verb argument structure in the early stages of processing morphologically complex words: MEG investigations of prefixation. Poster presented at the Society for the Neurobiology of Language Conference, Chicago, USA

Gaston, P., Gwilliams, L. & Marantz, A. (2015, October). The time-course of cohort restriction in syntactic context: MEG evidence for a single auditory word-form. Poster presented at the Society for the Neurobiology of Language Conference, Chicago, USA

Oseki, Y., Gwilliams, L., Blanco-Elorrieta, E., Gaston, P., Pylkkänen, L. & Marantz, A. (2015, October). Neural Dynamics of Morphological and Phrasal Composition. Poster presented at the Society for the Neurobiology of Language Conference, Chicago, USA

Brodbeck, C., Gwilliams, L. & Pylkkänen, L. (2015, October). EEG can track the time course of successful reference resolution in small visual worlds. Poster presented at the Society for the Neurobiology of Language Conference, Chicago, USA

Gwilliams, L., & Marantz, A. (2015, June). Abstract representation of the root morpheme: A magnetoencephalography study of spoken Arabic. Presentation at the 9th Morphological Processing Conference, Potsdam, Germany.

Gwilliams, L., & Marantz, A. (2015, March). Decomposition of spoken Arabic words into root morphemes during processing: Evidence from magnetoencephalography. Presentation at the Linguistics in the Gulf 5 Conference, Doha, Qatar.

Gwilliams, L., & Marantz, A. (2015, March). Letter specific sensitivities in the brain: located in time, space and current direction. Presentation at the Neuroscience of Language Lab Workshop 2015, Abu Dhabi, UAE.

Gwilliams, L., & Marantz, A. (2015, February). Non-linear processing of a linear speech stream. Presentation at the NYUAD Annual Research Conference 2015, Abu Dhabi, UAE.

2014

Gwilliams, L., Lewis, G., & Marantz, A. (2014, August). Revealing the cortical dynamics of letter string perception. Poster presented at the Society for the Neurobiology of Language Conference, Amsterdam.

Linzen, T., Gaston, P., Gwilliams, L., & Marantz, A. (2014, August). Competition and prediction in the auditory processing of morphologically complex words. Poster presented at the sixth annual Society for the Neurobiology of Language Conference, Amsterdam.

Brodbeck, C., Gwilliams, L., & Pylkkänen, L. (2014, February). Reference resolution and prediction in a visual world: MEG evidence from English and Arabic. Presentation at the NYUAD Annual Research Conference 2014, Abu Dhabi, UAE.