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Pienie Zwitserlood, University of Münster - Neural correlates of learning a novel vocabulary
Donnerstag, 12.11.2009 16:15 - 17:45
Pienie Zwitserlood (University of Münster) will give a talk on
the neural correlates of vocabulary learning:

Title: "Neural correlates of learning a novel vocabulary"


Abstract:
Language learning in adulthood becomes more and more of a necessity in
in times of globalisation and increasing mobility. Concentrating on
vocabulary, we investigated how novel words can be acquired with
associative learning, and the cognitive and neural changes
accompanying such learning. Associative learning mimics naturalistic
learning situations. It constitutes a powerful training method in
which to-be-learned novel words are coupled with existing concepts
more frequently than word/concept combinations that should not be
learned. We demonstrated that a large amount of new vocabulary can be
learned with this method, and that once learned, the novel words
display characteristics very similar to words from one’s native
language. The fast and robust acquisiton of novel linguistic material
holds for nouns and verbs, but is not suited to induce changes in the
phonemic inventory of one’s native language – as we found out in an
additional study.

We validated word-learning success by means of behavioural responses
and neurophysiological correlates from MEG. The component of interest
is the N400m, the magnetoencephalographic counterpart of the N400,
which is considered to be an index for semantic (in)congruencies and/
or the ease with which cues can access conceptual knowledge. As
expected, novel words induced large M400 components before learning,
and this amplitude was reduced after learning. Importantly, the N400
was reduced only when novel words and concepts matched. Depending on
the type of linguistic material that had to be learned, different
neural networks were involved in the integration of novel information
into already existing lexical and semantic networks.
I hope to see you all there.

Colliquium "Language and Cognition"
Contact
contact-person: Pia Knoeferle
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