ve 14/06 : Lisa Rosenfelt (UC San Diego)

[Anne Abeillé]

> Vous etes invites a venir écouter
> 
> 	   vendredi 14 juin
>   14h-16h, salle des conseils (533) 5e etage
>   bâtiment Olympe de Gouges
>   (8) rue Albert Einstein, 75013
> 
> Lisa Rosenfelt (UC san diego, postdoc labex EFL)
> Rethinking the functional significance of Early Negativity: Investigations in
> the language/sensory-motor interface
> 
> (abstract)
> Certain neurocognitive processing models (serial:Friederici 2002,
> cascaded:Bornkessel and Schlesewesky 2006) assume a modular architecture, and
> thus map linguistic ERP component latency onto discrete stages of a serial
> parser. The linchpin of these models is the early negativity (EN), which is
> mapped onto an automatic and informationally encapsulated first stage of
> syntactic parsing because it is elicited between 100-300 ms (earlier than known
> semantic ERP components) by purported word category violations (WCVs) (Neville
> et al. 1991, Friederici et al. 1993) that interrupt structure-building
> operations.
> 
> In my doctoral work, I showed the link between the early negativity and a first
> pass stage of phrase structure building to be tenuous, by presenting three
> studies in which a word category violation is neither sufficient nor necessary
> for eliciting an EN component during sentence processing. Specifically, the
> experiments demonstrated that: (1) an early negativity is only elicited by word
> category violations of a specific type, namely those that contain a sensory form
> that does not match the expected word category form, (2) early negativities are
> elicited by plausible semantic substitutions in idioms, a violation of expected
> lexical form, but not of syntax and (3) WCVs consistently elicit a late
> positivity. From these results I conclude that the early negativity is
> sensitive to the presence of an unexpected word form, regardless of the
> presence of a syntactic violation. Furthermore, in contrast to the assumptions
> of serial (or cascaded) neurocognitive processing models, contextually driven
> semantic/pragmatic processing can under certain circumstances elicit an early
> response, while the processing of syntactic structure building consistently
> elicits late responses. These results also provide insight into the constant
> updating of our knowledge on linguistic ERP componentry, such that no component
> should be thought of only as an index of the discrete stage of a modular parser.
> My doctoral work concludes by advocating for a delinking of the EN from first
> pass, automatic, syntactic processing, while proposing that the EN be
> considered an index of unexpected sensory forms.
> 

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