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DTSTAMP:20260625T145748Z
DESCRIPTION:The CRLMB Language Lunch is an informal\, academic-community\ns
 eminar on speech and language research. Please join us this week\nas Dr. J
 ohn Drury (Communication Sciences and Disorders\, CRLMB)\ndiscusses the us
 e of ERP technology in language research\, and in\nparticular\, the LAN/eL
 AN distinction in studies of syntactic\nprocessing.\n \nLeft anterior nega
 tivities in ERP studies of\n(morpho-)syntactic processing\n\nIn language E
 RP research\, early negative-going deflections with\nleft and/or anterior 
 scalp distributions (LANs) and latencies\nranging between 100-500 ms post-
 stimulus onset have been argued to\nbe indices of early/fast/automatic syn
 tactic and morpho-syntactic\nprocessing. In this talk I will consider data
  from two kinds of\nstudies which bear on our understanding of these types
  of\nERP-effects.\nOne important division that has figured prominently in 
 the\nliterature is that between very early (within the first ¼ second)\nLA
 N effects (“eLANs”) and later effects (roughly between 300-500\nms\; aka “
 LANs”). eLANs have been argued to reflect the rapid action\nof syntactic c
 ategory identification and structure assembly\, while\nlater LAN effects a
 re suggested to index syntactic feature checking\nrelevant to the connecti
 ons between morpho-syntax and the\nestablishment of thematic relationships
 . However\, an examination of\nthe ERP literature (here I will focus prima
 rily on reading studies)\nshows that eLAN effects have not been consistent
 ly found across\nstudies. Further\, the experimental contrasts which have 
 been argued\nto elicit these effects almost always have involved serious\n
 confounds.\nOne of the first paradigms to show both eLAN and LAN-type\neff
 ects (though these labels were introduced later) is Neville et\nal. (1991)
 \, who contrasted well-formed control sentences like “He\ncriticized Max’s
  proof OF the theorem” with word-order flips like\n“He criticized Max’s OF
  proof the theorem”). I present data from\ntwo separate studies which incl
 uded these contrasts\, and show that\nat least the very early LAN effect (
 Neville et al.’s “N125”) is\nlikely an artifact driven by baseline differe
 nces associated with\nERPs connected with the words immediately preceding 
 the target\nwords. The later LAN effect (in the 300-500 ms range)\, howeve
 r\,\nseems to not to be attributable to these confounds.\nFinally\, I will
  discuss another recent study examining the\nprocessing of regular versus 
 irregular English verbs which suggests\na fairly specific view of the natu
 re of later (300-500 ms) LAN\neffects in terms of mismatches between lexic
 ally retrieved\ninformation and syntax-driven predictions about the\ncateg
 ories/features and constituency of upcoming words. These\ncombined results
  will be argued to: (i) cast some doubt on the\neLAN/LAN distinction\, and
  (ii) suggests a rather more subtle view\nthan has been previously enterta
 ined about what exactly LAN effects\nindex.\n
DTSTART:20091118T170000Z
DTEND:20091118T183000Z
LOCATION:Rabinovitch House\, CA\, QC\, Montreal\, H3G 2A8\, 3640 rue de la 
 Montagne
SUMMARY:Language Lunch: Dr. John Drury
URL:/channels/event/language-lunch-dr-john-drury-11200
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