• wednesday, 14 june 2017—12:15

    Current debates on the dynamics of word production: insight from ERP studies with healthy and aphasic speakers

    Marina Laganaro, Psychology and Education Sciences, FAPSE, University of Geneva, Swiss

    Single word production has been intensively investigated with chronometric and electrophysiological approaches, leading to estimates of the relative time course of the underlying encoding processes based on serial models of word production (Indefrey, 2011). These estimates are currently debated on the basis of recent event-related potential (ERP) studies suggesting parallel activation of semantic and phonological information (Miozzo et al., 2015; Strijkers & Costa, 2016). Here we will illustrate how ERP studies with healthy participants based on the manipulation of specific psycholinguistic factors (Fargier & Laganaro, 2015; Valente, Bürki & Laganaro, 2014; Perret & Laganaro, 2012) and diverging ERP correlates in aphasic speakers with specific underlying cognitive impairments (Laganaro et al., 2009; 2011; 2013) converge towards serial processes in the dynamics of word planning.

    Fargier, R., Laganaro M. (2016). Spatio-temporal dynamics of referential and inferential naming: different brain and cognitive operations to lexical selection. Brain Topography. doi: 10.1007/s10548-016-0504-4
    Indefrey, P. (2011). The spatial and temporal signatures of word production components: A critical update. Frontiers in Psychology 2:255.
    Laganaro, M., Morand, S., Michel, CM., Spinelli, L., Schnider, A. (2011). ERP correlates of word production before and after stroke in an aphasic patient. Journal of Cognitive Neuroscience, 23, 374-81.
    Laganaro, M., Morand, S., Schnider, A. (2009). Time course of evoked-potential changes in different forms of anomia in aphasia. Journal of Cognitive Neuroscience, 21, 1499-1510.
    Laganaro, M., Python, G., Toepel, U. (2013). Dynamics of phonological-phonetic encoding in word production: Evidence from diverging ERPs between stroke patients and controls. Brain and Language, 126, 123-132.
    Miozzo M, Pulvermuller F, Hauk O. (2015) Early Parallel Activation of Semantics and Phonology in Picture Naming: Evidence from a Multiple Linear Regression MEG Study. Cereb Cortex.25(10):3343–55.
    Perret, C. Laganaro, M. (2012). Comparison of electrophysiological correlates of writing and speaking: a topographic ERP analysis. Brain Topography, 25, 64-72.
    Strijkers K, Costa A (2016) On words and brains: linking psycholinguistics with neural dynamics in speech production. Language, Cognition and Neuroscience. doi:10.1080/23273798.2016.1158845
    Valente, A., Bürki A, Laganaro, M. (2014). ERP correlates of word production predictors in picture naming: A trial by trial multiple regression analysis from stimulus onset to response Front. Neurosci. 8:390. doi: 10.3389/fnins.2014.00390.

    external seminar

    Talk in English