Abstract:
:We investigate the contribution of both hemispheres in a lateralised lexical decision paradigm with emotional and neutral words in healthy volunteers. In a first experiment, high-density EEG analysis using source imaging methods revealed early specific participation of the temporoparietal junctions (TPJ) in both hemispheres for the detection of words. Then, in an event-related transcranial magnetic stimulation experiment with the same task, the disruption of left or right TPJ compared with a control stimulation over the vertex showed a slowing that is more pronounced when words are emotional and presented in the left visual field (LVF). This indicates that interference with both left and right TPJ results in impaired processing of words that were presented to the LVF. In addition, these results point to a specific cooperative contribution of the right hemisphere in the processing of words with emotional content compared with neutral words at very early stages. Results from the two experiments can be integrated in a brain-based spatiotemporal model of the early detection of written words.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Rochas V,Rihs TA,Rosenberg N,Landis T,Michel CMdoi
10.1007/s00221-014-3843-ysubject
Has Abstractpub_date
2014-04-01 00:00:00pages
1267-81issue
4eissn
0014-4819issn
1432-1106journal_volume
232pub_type
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