LING212- SLA L2 processing and the brain Florencia Franceschina Psycholinguistics = “a branch of linguistics which studies the correlation between linguistic behaviour and the psychological processes thought to underlie that behaviour” Crystal (2003: 380) Neurolinguistics = ‘a branch of linguistics … which studies the neurological basis of language development and use’ Crystal (2003: 312) How is language processed? Language comprehension Exercise: Ambiguity resolution problems How is language processed? Language production A blueprint for the speaker (Levelt, 1989, 1999) CONCEP TUALIZ ER message generati on monitorin g discourse model, situat ion knowledge , encyclopedia, etc. parsed speech preverbal message FORMULAT OR grammat ica l encoding surface st ruct u re phonologic al encoding LEXICON lemmas SPEECHCOMPREHENSI ON SYSTEM forms phonet ic plan (internal speech) ART ICULAT OR phonet ic st ring AUDITIO N overt speech Levelt's (1989) levels of p rocessing in the generation of the phonetic plan for crampons MORP HOLOGICAL/METRICAL SPELLOUT LEVEL lemma crampon address: spellout: number plural stem af crampon V' V s SEGMENTAL SPELLOUT LEVEL stem crampon V' V address: aff ix s syllable spellout: onset rime nucl cr C1 V /¾/ C2 /k/ /r/ cluster spellout: onset coda C /m/ rime nucl C /p/ V /¶/ coda ns C1 C2 /n/ /s/ PHONETIC SPELLOUT LEVEL cluster comp osition: syllable address: spellout: onset cluster C1 C2 /k/ /r/ onset cluster C1 C2 /n/ /s/ /kr/ /ns/ onset nucl coda onset nucl coda /kr/ /¾/ /m/ /p/ /¶/ /ns/ [kr¾m] [p¶ns] Lexical decision task Stimulus Example Mean decision time Word DESK 708 msec. Non-word (fully unpronounceable) SJMF 607 msec. Non-word (onset unpronounceable) SJIF 644 msec. Non-word (coda unpronounceable) SAJF 680 msec. Non-word (pronounceable) SARF 746 msec. Source: Gough and Cosky (1977: 278), cited in Radford et al. (1999: 235) Exercise: Speech errors How is language represented in the brain? Left hemisphere Right hemisphere Corpus callosum Early days Early days Paul Broca (1824-1880) Cinderella… poor… um ‘dopted her… scrubbed floor, um, tidy… poor, um… ‘dopted… si-sisters and mother … ball. Frontal lobe Broca’s Area Wernicke’s Area Early days Paul Broca Carl Wernicke (1824-1880) (1848-1904) You know that smoodle pinkered and that I want to get him round and take care of him like you want before. Broca’s Area Wernicke’s Area Temporal lobe Broca’s Area Wernicke’s Area Modern techniques Magnetic resonance imaging (MRI) Positron emission tomography (PET) Event-related potentials (ERP) Magnetoencelography (MEG) MRI of a Broca’s aphasic MRI of a Wernicke’s aphasic References Crystal, David. 2003. A dictionary of linguistics and phonetics. Oxford: Blackwell. Levelt, Willem J M. 1989. Speaking: from intention to articulation. Cambridge, MA: MIT Press. Levelt, Willem J M. 1999. Producing spoken language: a blueprint for the speaker. In The neurocognition of language, eds. Colin M Brown and Peter Hagoort. Oxford: Oxford University Press. Pp. 83-122. Reading Obler, Loraine K and Hannigan, Sharon. 1996. Neurolinguistics of second language acquisition and use. In The handbook of second language acquisition, eds. William C Ritchie and Tej K Bhatia. San Diego: Academic Press. Pp. 509-523. Further reading Accessible introductions to psycho- and neurolinguistics: Caplan, David. 2000. Neurolinguistics. In The handbook of linguistics, eds. Mark Aronoff and Janie Rees-Miller. Oxford: Blackwell. Pp. 295-318. Fabbro, F. 1999. The neurolinguistics of bilingualism: an introduction. Hove: Psychology Press. Fromkin, V., Rodman, R. and Hyams, N. 2003. An introduction to language. Boston: Heinle. (Chapters 2 and 9) Li Wei ed. 2000. The bilingualism reader. London: Routledge. (Part III) What have we covered so far? Factors that influence SLA: …………………… … …………………… … …………………… … …………………… … …………………… … Next term Project based You will be trained in the use of – – CHILDES http://childes.psy.cmu.edu/ ICLE (International Corpus of Learner English) You may decide to collect your own data (please come to see me if you are thinking of doing this, as there are a number of practical issues that you will need to sort out)