Spatiotemporal Interaction between Sound Form and Meaning during Spoken Word Perception

@article{citeulike:2429973, abstract = {Cortical dynamics of spoken word perception is not well understood. The possible interplay between analysis of sound form and meaning, in particular, remains elusive. We used magnetoencephalography to study cortical manifestation of phonological and semantic priming. Ten subjects listened to lists of 4 words. The first 3 words set a semantic or phonological context, and the list-final word was congruent or incongruent with this context. Attenuation of activation by priming during the first 3 words and increase of activation to semantic or phonological mismatch in the list-final word provided converging evidence: The superior temporal cortex bilaterally was involved in both analysis of sound form and meaning but the role of each hemisphere varied over time. Sensitivity to sound form was observed at [\~{}]100 ms after word onset, followed by sensitivity to semantic aspects from [\~{}]250 ms onwards, in the left hemisphere. From [\~{}]450 ms onwards, the picture was changed, with semantic effects now present bilaterally, accompanied by a subtle late effect of sound form in the right hemisphere. Present MEG data provide a detailed spatiotemporal account of neural mechanisms during speech perception that may underlie characterizations obtained with other neuroimaging methods less sensitive in temporal or spatial domain. 10.1093/cercor/bhm076}, author = {Uusvuori, Johanna and Parviainen, Tiina and Inkinen, Marianne and Salmelin, Riitta }, citeulike-article-id = {2429973}, doi = {http://dx.doi.org/10.1093/cercor/bhm076}, journal = {Cereb. Cortex}, keywords = {auditory, jc-cercor, meg, phonetic, semantic, sound}, month = {February}, number = {2}, pages = {456--466}, posted-at = {2008-02-26 15:27:09}, priority = {2}, title = {Spatiotemporal Interaction between Sound Form and Meaning during Spoken Word Perception}, url = {http://dx.doi.org/10.1093/cercor/bhm076}, volume = {18}, year = {2008} }

TY - JOUR ID - citeulike:2429973 L3 - citeulike-article-id:2429973 TI - Spatiotemporal Interaction between Sound Form and Meaning during Spoken Word Perception JF - Cereb. Cortex VL - 18 IS - 2 SP - 456 EP - 466 N2 - Cortical dynamics of spoken word perception is not well understood. The possible interplay between analysis of sound form and meaning, in particular, remains elusive. We used magnetoencephalography to study cortical manifestation of phonological and semantic priming. Ten subjects listened to lists of 4 words. The first 3 words set a semantic or phonological context, and the list-final word was congruent or incongruent with this context. Attenuation of activation by priming during the first 3 words and increase of activation to semantic or phonological mismatch in the list-final word provided converging evidence: The superior temporal cortex bilaterally was involved in both analysis of sound form and meaning but the role of each hemisphere varied over time. Sensitivity to sound form was observed at [~]100 ms after word onset, followed by sensitivity to semantic aspects from [~]250 ms onwards, in the left hemisphere. From [~]450 ms onwards, the picture was changed, with semantic effects now present bilaterally, accompanied by a subtle late effect of sound form in the right hemisphere. Present MEG data provide a detailed spatiotemporal account of neural mechanisms during speech perception that may underlie characterizations obtained with other neuroimaging methods less sensitive in temporal or spatial domain. 10.1093/cercor/bhm076 KW - auditory KW - jc-cercor KW - meg KW - phonetic KW - semantic KW - sound AU - Uusvuori, Johanna AU - Parviainen, Tiina AU - Inkinen, Marianne AU - Salmelin, Riitta PY - 2008/02/01/ UR - http://dx.doi.org/10.1093/cercor/bhm076 ER -