Quantifying the adequacy of neural representations for a cross-language phonetic discrimination task: Prediction of individual differences

Rajeev D.S. Raizada, Feng Ming Tsao, Huei Mei Liu, Patricia K. Kuhl

研究成果: 雜誌貢獻期刊論文同行評審

57 引文 斯高帕斯(Scopus)

摘要

In order for stimuli to be perceptually discriminable, their representations in the brain must be distinct. Investigating the task of discriminating the syllables /ra/ and /la/, we hypothesized that the more distinct a person's neural representations of those sounds were, the better their behavioral ability to discriminate them would be. Standard neuroimaging approaches are ill-suited to testing this hypothesis as they have problems differentiating between neural representations spatially intermingled within the same brain area. We therefore performed multi-voxel pattern-based analysis of the functional magnetic resonance imaging (fMRI) activity elicited by these syllables, in native speakers of English and Japanese. In right primary auditory cortex, the statistical separability of these fMRI patterns predicted subjects' behavioral ability to tell the sounds apart, not only across groups but also across individuals. This opens up a new approach for identifying neural representations and for quantifying their task suitability.

原文英語
頁(從 - 到)1-12
頁數12
期刊Cerebral Cortex
20
發行號1
DOIs
出版狀態已發佈 - 2010 一月

ASJC Scopus subject areas

  • 認知神經科學
  • 細胞與分子神經科學

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