A Study of Laminar fMRI and and Directed Connectivity during Sentence Processing: A Pilot Study
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2019-12-20
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en
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It is currently unclear how the language network in the brain evokes a concept that is the result
of semantic composition. We conducted a pilot study laying the groundworks for a laminar
fMRI study that aims to investigate this matter further. A paradigm was developed where target
words were either primed through compositional semantics, identity primes, neither, or both. A
behavioural experiment showed that the identity priming manipulation successfully reduced
reaction times in a lexical decision task, which was the predicted behavioural effect. We
predicted and found a modulated BOLD response in left inferior frontal gyrus and middle
temporal gyrus to target words that were compositionally primed. This work will inform a
subsequent laminar fMRI study, where the directed connectivity during sentence processing
between these regions will be examined.
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Faculteit der Sociale Wetenschappen