Lexical representation explains cortical entrainment during speech comprehension
Frank, S. L., & Yang, J.
Lexical representation explains cortical entrainment during speech comprehension. PLoS One, 13
(5): e0197304. doi:10.1371/journal.pone.0197304.
Results from a recent neuroimaging study on spoken sentence comprehension have been interpreted as evidence for cortical entrainment to hierarchical syntactic structure. We present a simple computational model that predicts the power spectra from this study, even
though the model's linguistic knowledge is restricted to the lexical level, and word-level representations are not combined into higher-level units (phrases or sentences). Hence, the
cortical entrainment results can also be explained from the lexical properties of the stimuli, without recourse to hierarchical syntax.