LING 390 Lecture Notes - Temporal Lobe, Temporal Lobe Epilepsy
5 Dec 2012
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We build our structure as we go. Violation paradigm: present a word that does not fid semantically (he spread the warm bread with socks) There"s an n400 erp at socks, but not if it"s replaced by butter. Remember: this is a negative deflection at 300-350 ms post stimulus, which peaks at 400. Negative is represented with upwards -> remember this. There"s a modulation for the effect depending on how predictible the word is. N400 is not affected by syntactic violations. Broca"s and wernicke"s aphasiacs show robust n400 effects. Not dependent on these areas, per se, but dependent on the left temporal lobe (as per patients with left temporal lobe epilepsy) No name for meg component generated yet (n400 = erp anomaly contrast) Lexical: it may not be easy to access the words, it really doesn"t have to do with structural combinations, it"s just that semantically relating the earlier words makes it easier to access them.
