Journal
NEURON
Volume 102, Issue 6, Pages 1096-1110Publisher
CELL PRESS
DOI: 10.1016/j.neuron.2019.04.023
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Funding
- NIH [R01-DC012379, R01-DC015504]
- New York Stem Cell Foundation
- Howard Hughes Medical Institute
- McKnight Foundation
- Shurl and Kay Curci Foundation
- William K. Bowes Foundation
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The human superior temporal gyrus (STG) is critical for extracting meaningful linguistic features from speech input. Local neural populations are tuned to acoustic-phonetic features of all consonants and vowels and to dynamic cues for intonational pitch. These populations are embedded throughout broader functional zones that are sensitive to amplitude-based temporal cues. Beyond speech features, STG representations are strongly modulated by learned knowledge and perceptual goals. Currently, a major challenge is to understand how these features are integrated across space and time in the brain during natural speech comprehension. We present a theory that temporally recurrent connections within STG generate context-dependent phonological representations, spanning longer temporal sequences relevant for coherent percepts of syllables, words, and phrases.
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