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- Publisher Website: 10.1016/j.bandl.2019.104700
- Scopus: eid_2-s2.0-85072787368
- PMID: 31586791
- WOS: WOS:000498754000007
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Article: Top-down and bottom-up mechanisms as reflected by beta and gamma oscillations in speech perception: An individual-difference approach
Title | Top-down and bottom-up mechanisms as reflected by beta and gamma oscillations in speech perception: An individual-difference approach |
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Authors | |
Keywords | EEG Beta oscillation Gamma oscillation Speech perception |
Issue Date | 2019 |
Publisher | Academic Press. The Journal's web site is located at http://www.elsevier.com/locate/b&l |
Citation | Brain and Language, 2019, v. 199, p. article no. 104700 How to Cite? |
Abstract | Recent neurophysiological studies have proposed distinct roles of β and γ oscillations in implementing top-down and bottom-up processes. The present study aims to test this hypothesis in the domain of speech perception. We examined β and γ oscillations elicited to a tone contrast in a passive oddball paradigm, and their relationships with discrimination sensitivity d′ and RT from two groups of healthy adults who showed high and low discrimination sensitivity to the contrast. The low-sensitivity group showed a significant reduction in β, which was further related to d′. Individual differences in RT were related to different frequency bands in the two groups, with a RT-β correlation in the low-sensitivity group, and a RT-γ relation in the high-sensitivity group. Based on these findings, we suggest that β, implicated in top-down processing, reflects individual differences in phonological representations, and that γ, involved in bottom-up processing, reflects individual differences in acoustic encoding. |
Persistent Identifier | http://hdl.handle.net/10722/287734 |
ISSN | 2023 Impact Factor: 2.1 2023 SCImago Journal Rankings: 0.881 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Ou, J | - |
dc.contributor.author | Law, SP | - |
dc.date.accessioned | 2020-10-05T12:02:29Z | - |
dc.date.available | 2020-10-05T12:02:29Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Brain and Language, 2019, v. 199, p. article no. 104700 | - |
dc.identifier.issn | 0093-934X | - |
dc.identifier.uri | http://hdl.handle.net/10722/287734 | - |
dc.description.abstract | Recent neurophysiological studies have proposed distinct roles of β and γ oscillations in implementing top-down and bottom-up processes. The present study aims to test this hypothesis in the domain of speech perception. We examined β and γ oscillations elicited to a tone contrast in a passive oddball paradigm, and their relationships with discrimination sensitivity d′ and RT from two groups of healthy adults who showed high and low discrimination sensitivity to the contrast. The low-sensitivity group showed a significant reduction in β, which was further related to d′. Individual differences in RT were related to different frequency bands in the two groups, with a RT-β correlation in the low-sensitivity group, and a RT-γ relation in the high-sensitivity group. Based on these findings, we suggest that β, implicated in top-down processing, reflects individual differences in phonological representations, and that γ, involved in bottom-up processing, reflects individual differences in acoustic encoding. | - |
dc.language | eng | - |
dc.publisher | Academic Press. The Journal's web site is located at http://www.elsevier.com/locate/b&l | - |
dc.relation.ispartof | Brain and Language | - |
dc.subject | EEG | - |
dc.subject | Beta oscillation | - |
dc.subject | Gamma oscillation | - |
dc.subject | Speech perception | - |
dc.title | Top-down and bottom-up mechanisms as reflected by beta and gamma oscillations in speech perception: An individual-difference approach | - |
dc.type | Article | - |
dc.identifier.email | Law, SP: splaw@hku.hk | - |
dc.identifier.authority | Law, SP=rp00920 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.bandl.2019.104700 | - |
dc.identifier.pmid | 31586791 | - |
dc.identifier.scopus | eid_2-s2.0-85072787368 | - |
dc.identifier.hkuros | 314703 | - |
dc.identifier.volume | 199 | - |
dc.identifier.spage | article no. 104700 | - |
dc.identifier.epage | article no. 104700 | - |
dc.identifier.isi | WOS:000498754000007 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 0093-934X | - |