Late Positive Component (LPC) and CNV during Processing of Linguistic Information
The late positive component of the evoked potential (LPC) and the contingent negative variation (CNV) have been investigated with visual and acoustic stimuli by many researchers studying linguistic processing. CNVs were investigated during word category discrimination by Burian et al. (1972). LPCs were studied during information processing in sentences by Friedman et al. (1975) and during semantic information processing of words by Thatcher and April (1976). Different lateralization for noun- and verb-evoked EEG scalp potential fields was reported by Brown and Lehmann (1977). Both Burian and Thatcher tried to apply ERPs evoked by words in testing aphasic patients. We studied CNV and LPC during processing of linguistic information to find out if ERPs can be useful for testing the recognition of Japanese sentences and words.
KeywordsLight Emit Diode P650 Amplitude P300 Latency Contingent Negative Variation Meaningful Sentence
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- Brown, W.S. and Lehmann, D. Different lateralization for noun- and verb-evoked EEG scalp potential fields. Abstract. Electroenceph. Clin. Neurophysiol., 1977, 43, 469.Google Scholar
- Goto, H., Adachi, T., Utsunomiya, T. and Nakano, H. Simple and random aural-stimulator for study of evoked potential, late positive component (P300) and contingent negative variation (CNV). Dig. Eleventh Int. Conf. Med. Biol. Eng., Ottawa, 1976, 444–445.Google Scholar
- Sasanuma, S. and Fujimura, O. Selective impairment of phonetic and non-phonetic transcription of words in Japanese aphasic patients: Kana vs. Kanji in visual recognition and writing. Cortex, 1971, 7, 1–18.Google Scholar
- Thatcher, R.W. and April, R.S. Evoked potential correlates of semantic information processing in normals and aphasics. In R.W. Rieber (Ed.), The Neuropsychology of Language, New York: Plenum Press, 1976.Google Scholar