ArticleCerebral cortex (New York, N.Y. : 1991)2023
Delta-band neural tracking primarily reflects rule-based chunking instead of semantic relatedness between words.
Article in Cerebral cortex (New York, N.Y. : 1991), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed, 23 citations in OpenAlex.
- Low-frequency cortical activity reflects context-dependent parsing of word sequences.iScience · 2025Article
- Segmentation window of speech information processing in the human auditory cortex.Scientific reports · 2024Article
- Choice-dependent delta-band neural trajectory during semantic category decision making in the human brain.iScience · 2024Article
- Structural and sequential regularities modulate phrase-rate neural tracking.Scientific reports · 2024Article
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4 authors at 1 institution in 2 countries.
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Abstract
It is debated whether cortical responses matching the time scales of phrases and sentences mediate the mental construction of the syntactic chunks or are simply caused by the semantic properties of words. Here, we investigate to what extent delta-band neural responses to speech can be explained by semantic relatedness between words. To dissociate the contribution of semantic relatedness from sentential structures, participants listened to sentence sequences and paired-word sequences in which semantically related words repeated at 1 Hz. Semantic relatedness in the 2 types of sequences was quantified using a word2vec model that captured the semantic relation between words without considering sentential structure. The word2vec model predicted comparable 1-Hz responses with paired-word sequences and sentence sequences. However, empirical neural activity, recorded using magnetoencephalography, showed a weaker 1-Hz response to paired-word sequences than sentence sequences in a word-level task that did not require sentential processing. Furthermore, when listeners applied a task-related rule to parse paired-word sequences into multi-word chunks, 1-Hz response was stronger than that in word-level task on the same sequences. Our results suggest that cortical activity tracks multi-word chunks constructed by either syntactic rules or task-related rules, whereas the semantic relatedness between words contributes only in a minor way.
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