prof. dr. A.P.A. Roelofs (Ardi)
Principal Investigator - Donders Centre for Cognition
Principal Investigator - Donders Institute for Brain, Cognition and Behaviour
Hoogleraar - Psycholinguïstiek
Thomas van Aquinostraat 4
6525 GD NIJMEGEN
6500 HE NIJMEGEN
Language interacts with other cognitive abilities, including perception, action, memory, thought, and attention. My lab seeks to understand the neurocognitive mechanisms of language and its relation to these other abilities, in particular, attention. We study this in healthy (bilingual) adults as well as in typically developing children and children with language impairment, and in (bilingual) adults with aphasia due to stroke or neurodegenerative disease. Our goal is not only to contribute to a better understanding of the neurocognitive mechanisms of language and its relation to other cognitive abilities, but also to help improve the diagnosis and treatment of language deficits (e.g., our screening test SYDBAT-NL and therapy app SIMPTELL for aphasia).
We have adopted a multi-method research approach that includes measurements of response time and accuracy, eye tracking, electrophysiological (EEG, MEG) and hemodynamic (fMRI) neuroimaging, tractography, imaging genetics, and computational modeling. Our research is driven by, and aims to further develop, the WEAVER++ computational model of attention and language performance and its neurocognitive extension WEAVER++/ARC, which synthesizes behavioral psycholinguistic, functional neuroimaging, tractography, and aphasiological evidence. We collaborate with the Max Planck Institute for Psycholinguistics, Royal Dutch Kentalis, the Radboudumc Alzheimer Centre, and the Sint Maartenskliniek.
A central topic of our work is word finding (in first and second languages), also called word retrieval, lexical access, or word planning. Word-finding difficulties occasionally occur in all speakers and frequently in all types of aphasia and developmental language disorder. Word finding and its difficulties may be assessed by measuring the speed and accuracy of picture naming, and deficits can be remediated by training. WEAVER++/ARC addresses the neurocognitive mechanisms underlying treatment and improvement.
- Roelofs, A. (2018). A unified computational account of cumulative semantic, semantic blocking, and semantic distractor effects in picture naming. Cognition, 172, 59-72.
- Roelofs, A. (2014). A dorsal-pathway account of aphasic language production: The WEAVER++/ARC model. Cortex, 59, 33-48.
- Roelofs, A., Van Turennout, M., & Coles, M. G. H. (2006). Anterior cingulate cortex activity can be independent of response conflict in Stroop-like tasks. Proceedings of the National Academy of Sciences USA, 103, 13884-13889.
- Roelofs, A. (2003). Goal-referenced selection of verbal action: Modeling attentional control in the Stroop task. Psychological Review, 110, 88-125.
- Levelt, W.J.M., Roelofs, A., & Meyer, A.S. (1999). A theory of lexical access in speech production. Behavioral and Brain Sciences, 22, 1-38.
Onderzoeksbeurzen en -prijzen
- 2013 - Grant within NWO Gravitation Consortium "Language in Interaction" for the PhD project "Basal ganglia thalamocortical mechanisms of cognitive control in speaking" (Main applicant with Prof. dr. R. Cools; co-applicants Prof. dr. S. Fisher and Prof. dr. B. Bloem).
- 2012 - DCC grant (Main applicant; co-applicants Prof. Dr. S. Fisher [MPI, Oxford U.], Dr. D. Hermans [Royal Dutch Kentalis], and Prof. Dr. H. Knoors [Royal Dutch Kentalis, BSI]) for the PhD project "Genetics and training of attentional control in typical and developmentally impaired speakers".
- 2009 - NWO grant (Open Competition MaGW) for the PhD project "Semantic context effects in spoken word production: Role of attentional control" (Main applicant; co-applicants Prof. Dr. H. Schriefers and Dr. D. Chwilla).
- 2003 - NWO VICI grant for the project “Goal-referenced control of verbal and nonverbal actions”.
- 1993 - Preamium Erasmianum (Erasmus Prize) Research Prize for the dissertation "Lemma retrieval in speaking: A theory, computer simulations, and empirical data".
- The role of subcortical structures in language (PhD project): João Ferreira, Vitória Piai (DCC / DCN-Radboudumc), Ardi Roelofs.
- SIMPTELL: Semi-independent Interactive Multimodal Production Training of ELLipses [in Broca’s aphasia] (Knowledge utilization project): Marina Ruiter (Sint Maartenskliniek rehabilitation centre, Centre for Language Studies), Vitória Piai (DCC / DCN-Radboudumc), Arvind Datadien, Esther Steenbeek-Planting, Robert van Engelen, Isabelle Hendriks, Ardi Roelofs.
- The lexical interface in the brain: Linking spoken language comprehension and production (PhD project): Arushi Garg, James McQueen (DCC), Atsuko Takashima (DCCN, MPI), Vitória Piai (DCC / DCN-Radboudumc), Ardi Roelofs.
- Basal ganglia thalamocortical mechanisms of cognitive control in speaking (PhD project): Marpessa Rietbergen, Roshan Cools (DCCN), Simon Fisher (MPI, Oxford U.), Bas Bloem (UMC St Radboud Nijmegen), Ardi Roelofs.
- Contributions of dorsal and ventral neural pathways to speaking in health and disease (PhD project): Nikki Janssen, Roy Kessels (DCC, DCN, Radboud Alzheimer Centre), Christian Beckmann (DCN, DCCN, Radboud UMC CNS Dept.), Marcel Olde Rikkert (DCN, Radboud Alzheimer Centre), Ardi Roelofs.