Proceedings of the KSPS conference (대한음성학회:학술대회논문집)

The Korean Society Of Phonetic Sciences And Speech Technology (대한음성학회)
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Magnetoencephalographic Study on the cerebral neural activities related to the processing of lexically ambiguous words

뇌자도를 이용한 어휘적 중의성의 처리와 관련된 대뇌 신경활동 분석

  • Yu, Gi-Soon (Department of Psychology, Korea University) ;
  • Kim, June-Sic (Department of Neurosurgery, College of Medicine, Seoul National University) ;
  • Chung, Chun-Kee (Department of Neurosurgery, College of Medicine, Seoul National University) ;
  • Nam, Ki-Chun (Department of Psychology, Korea University)
  • 유기순 (고려대학교 심리학과) ;
  • 김준식 (서울대학교 의과대학 신경외과학교실) ;
  • 정천기 (서울대학교 의과대학 신경외과학교실) ;
  • 남기춘 (고려대학교 심리학과)
  • Published : 2007.05.18
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Abstract

Neuromagnetic fields were recorded from normal 10 subjects to investigate the time course of cerebral neural activation during the resolution of lexical ambiguity. All recordings were made using a whole-head 306-channel MEG (Elekta Neuromag TM Inc., $Vectorview^{TM}$). The observed activity was described by sLORETA (standardized low resolution brain electromagnetic tomography) techniques implemented in CURRY software (Neuroscan). In the results, bilaterally occipito-temporal lobe was activated at 170ms. At 250ms was associated with bilateral temporal lobe during ambiguous condition, whereas in left parietal, temporal lobe on unambiguous condition. The left frontal lobe, temporal lobe were activated at 350ms for all condition. At approximately 430ms, was activated in right frontal, temporal lobe on the resolving ambiguous condition, in left parietal lobe, right temporal lobe on the preserving ambiguous condition. In conclusion, the cerebral activations related to the resolving lexical ambiguity were right frontal lobe and the areas of mountainous ambiguity were left parietal lobe.

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