Parallel versus serial processing dependencies in the perisylvian speech network: a Granger analysis of intracranial EEG data.
In this work, we apply Granger causality analysis to high spatiotemporal resolution intracranial EEG (iEEG) data to examine how different components of the left perisylvian language network interact during spoken language perception. The specific focus is on the characterization of serial versus par...
| Publicado en: | Brain & Language Vol. 110; no. 1; pp. 43 - 49 |
|---|---|
| Autores principales: | , , , , , , , , , |
| Formato: | Journal Article |
| Publicado: |
Academic Press Inc.
Jul2009
|
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=105538513&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105538513 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 0093934X 89A jtl: Brain & Language issn: 0093934X maglogo: N pubinfo: dt: Jul2009 vid: 110 iid: 1 pid: 735 pub: Academic Press Inc. place: Burlington, Massachusetts artinfo: ui: 105538513 NLM19356793 2010289336 10.1016/j.bandl.2009.02.004 NLM19356793 PMC2693301 105538513 ppf: 43 ppct: 6 formats: tig: atl: Parallel versus serial processing dependencies in the perisylvian speech network: a Granger analysis of intracranial EEG data. aug: au: Gow DW Jr Keller CJ Eskandar E Meng N Cash SS Gow, David W Jr Keller, Corey J Eskandar, Emad Meng, Nate Cash, Sydney S affil: Department of Neurology, Cognitive/Behavioral Neurology Group, Massachusetts General Hospital, 175 Cambridge Street, Suite S340, Boston, MA 02114, United States sug: subj: Frontal Lobe Physiology Speech Perception Temporal Lobe Physiology Acoustic Stimulation Adult Diagnostic Imaging Electrodes, Implanted Electroencephalography Magnetic Resonance Imaging Male Time Adult: 19-44 years Male ab: In this work, we apply Granger causality analysis to high spatiotemporal resolution intracranial EEG (iEEG) data to examine how different components of the left perisylvian language network interact during spoken language perception. The specific focus is on the characterization of serial versus parallel processing dependencies in the dominant hemisphere dorsal and ventral speech processing streams. Analysis of iEEG data from a large, 64-electrode grid implanted over the left perisylvian region in a single right-handed patient showed a consistent pattern of direct posterior superior temporal gyrus influence over sites distributed over the entire ventral pathway for words, non-words, and phonetically ambiguous items that could be interpreted either as words or non-words. For the phonetically ambiguous items, this pattern was overlayed by additional dependencies involving the inferior frontal gyrus, which influenced activation measured at electrodes located in both ventral and dorsal stream speech structures. Implications of these results for understanding the functional architecture of spoken language processing and interpreting the role of the posterior superior temporal gyrus in speech perception are discussed. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
|---|