My research seeks to unite theoretical neuroscience and linguistics at the level of computation. Brains are incredibly powerful yet restricted types of computers at every level, from dendrite trees to single neurons to neuronal networks. Human languages are also remarkable in their generative power, yet constrained by strong computational principles at every level, from syntax to morphology to phonology. I attempt to connect the computations that neurobiological networks can perform with the computations required by human grammars, in order to generate the incredible variety of languages we see.
Humans intuitively pattern meaningless symbolic elements into meaningful units when we comprehend and produce language. The complex rules and structures governing this patterning - phonology - act as a cognitive filter for the underlying structure of language as it is transformed into external action, whether through speech, sign, or tactile language. The wide variety of patterns that humans produce across languages, and their mappings from underlying forms to surface forms show a remarkable computational simplicity, combined with efficient and accurate learning algorithms. I draw on automata theory, formal language theory, grammatical inference, and mathematical logic to clarify the nature of the human mental capacity of phonology.
To Appear Rawski, Jonathan. 2017. Phonological Complexity is Subregular: Evidence from Sign language. Proceedings of the 51st Meeting of the Chicago Linguistics Society
Rawski, Jon. 2017. Phonological Complexity is Subregular: Evidence from Sign Language. Talk. The 51st Annual Meeting of the Chicago Linguistic Society. University of Chicago. [slides]
Rawski, Jon. 2018. Subregular Complexity Across Speech and Sign. Poster. Society for Computation in Linguistics 1st Meeting. Salt Lake City
Rawski, Jon, Aniello De Santo, and Jeffrey Heinz. 2017. Reconciling Minimum Description Length with Grammar-Independent Complexity Measures. Poster. MIT Workshop on Simplicity in Grammar Learning.
Phonology lies at the intersection of linguistics and neurobiology. Phonological rules govern the physical instantiation of thought made in language, and yet phonology is the first completely abstract computational layer that perceptual encoding/decoding must enter. The mapping problem, or instantiating these symbolic rules into neuronal systems, is an important part of figuring out the biological capacity for language. How brains perform this feat is a matter of their unique structure and computing power, most of which is an open question. Neuronal systems intrinsically oscillate at different timescales, and when connected in multiple ways impose a high sensitivity to the rhythmic perturbations which closely map onto human phonological patterns. Additionally, phonological constraints morph and solidify remarkably quickly during childhood maturation, and resist perturbation in the same way as other biological states, a process known as homeostasis.
in prep. Rawski, Jonathan. 2017. Syntax, Prosody, and Neural Oscillatory Computation: A Review.
in prep Rawski Jonathan and Boris Gutkin. Homeostatic Influences on learning Maximum Entropy Grammars
Rawski, Jonathan. 2016. Homeostasis in Harmonic Grammar. MS, Higher School of Economics
Rawski, Jonathan. 2015. Second-Language Phonology Learning and Neuroplasticity. Linguistic Portfolios Vol. 4
Rawski, Jonathan. 2016. Homeostatic Reinforcement Learning for Harmonic Grammars. Talk. SYNC Conference. CUNY, New York.
Rawski, Jonathan, Boris Gutkin. 2016. Homeostatic Reinforcement Learning for Harmonic Grammars. Invited Talk. MIT Linguistics Dept.
Rawski, Jonathan. 2016. Homeostasis in Harmonic Grammar. Invited Talk. Laboratoire de Neurosciences Cognitives, Ecole Normale Superieure, Paris, France
Rawski, Jonathan. 2015. Linguistic Structure from Neural Computation. Talk. Center for Cognition Seminar, Higher School of Economics.
De Santo, Aniello., Jon Rawski, & J.E. Drury. 2017. ERP Effects for Quanitifier Complexity, Priming, and Truth Value in an auditory/visual Verification Task. Poster Society for the Neurobiology of Language Annual Meeting 2017
Rawski, Jon. 2017. A Homeostatic Space for OT Phonology. Poster. Pronouns: Syntax, Semantics, Processing Conference (Moscow, Russia)
jonathan [dot] rawski [at] stonybrook [dot] edu