I am interested in psycholinguistic questions such as how one or multiple languages are processed in the brain and how learning a second language affects the neurocognitive system. One of my recent research projects has focused on the question of whether bilingualism is associated with benefits and costs on cognitive control functions and language. I have also done research on how morphologically complex words, i.e., words with several meaningful units (“read+er+s”), are processed in monolinguals and bilinguals, and whether processing is affected by the structure of the language (e.g., Finnish vs. Swedish). We are also currently investigating how such words are processed by immigrants in the process of learning the morphologically rich Finnish language.
For more information about my research, see my ResearchGate profile
Prior to UiO, I have worked as Academy Research Fellow at Åbo Akademi University in Turku, Finland, and at University of Helsinki, after a postdoc period in the USA. My research has utilized several neuroimaging techniques, such as fMRI, EEG and MEG, and behavioral methods. My own background is in psychology, but the interdisciplinary nature of the research has led to interesting collaborations with researchers from several fields, including linguistics, computational sciences, and neurosciences.
Lehtonen, M., Soveri, A., Laine, A., Järvenpää, J., de Bruin, A. & Antfolk, J. (2018). Is bilingualism associated with enhanced executive functioning in adults? A meta-analytic review. Psychological Bulletin, 144(4), 394-425. doi:10.1037/bul0000142
Laine, M. & Lehtonen, M. (2018). Cognitive consequences of bilingualism: where to go from here? Language, Cognition and Neuroscience, 33(9), 1205-1212.
Hämäläinen, S., Joutsa, J., Sihvonen, A. J., Leminen, A., & Lehtonen, M. (in press). Beyond volume: A surface-based approach to bilingualism-induced grey matter changes. Neuropsychologia.
Nikolaev, A., Lehtonen, M., Higby, E., Hyun, J., & Ashaie, S. (2018). A facilitatory effect of rich stem allomorphy but not inflectional productivity on single-word recognition. Applied Psycholinguistics.
Jylkkä, J., Lehtonen, M., Kuusakoski, A., Lindholm, F., Hut, S. C. A. & Laine, M. (2018). The role of general executive functions in receptive language switching and monitoring. Bilingualism: Language and Cognition, 21(4), 839-855.
Virpioja, S., Lehtonen, M., Hultén, A., Roikola, H., Salmelin, R. & Lagus, K. (2018). Using Statistical Models of Morphology in the Search for Optimal Units of Representation in the Human Mental Lexicon. Cognitive Science, 42(3):939-973.
Hut, S. C. A, Helenius, P., Leminen, A., Mäkelä, J. & Lehtonen, M. (2017). Language control mechanisms differ for native languages: neuromagnetic evidence from trilingual language switching. Neuropsychologia, 107, 108-120.
Jylkkä, J., Soveri, A., Wahlström, J., Lehtonen, M., Rodríguez-Fornells, A., & Laine, M. (2017). Relationship between language switching experience and executive functions in bilinguals: an internet-based study. Journal of Cognitive Psychology, 29(4), 404-419.
- Hakala, Tero; Hulten, Annika; Lehtonen, Minna; Lagus, Krista & Salmelin, Riitta (2018). Information properties of morphologically complex words modulate brain activity during word reading. Human Brain Mapping. ISSN 1065-9471. 39(6), s 2583- 2595 . doi: 10.1002/hbm.24025
- Hamalainen, Sini; Joutsa, Juho; Sihvonen, Aleksi J.; Leminen, Alina & Lehtonen, Minna (2018). Beyond volume: A surface-based approach to bilingualism-induced grey matter changes. Neuropsychologia. ISSN 0028-3932. 117, s 1- 7 . doi: 10.1016/j.neuropsychologia.2018.04.038
- Laine, Matti & Lehtonen, Minna (2018). Cognitive consequences of bilingualism: Where to go from here?. Language, Cognition and Neuroscience. ISSN 2327-3798. 33(9), s 1205- 1212 . doi: 10.1080/23273798.2018.1462498
- Lukasik, Karolina M; Lehtonen, Minna; Soveri, Anna; Waris, Otto; Jylkka, Jussi & Laine, Matti (2018). Bilingualism and working memory performance: Evidence from a large-scale online study. PLoS ONE. ISSN 1932-6203. 13(11), s 1- 16 . doi: 10.1371/journal.pone.0205916
- Nikolaev, Alexandre; Lehtonen, Minna; Higby, EVE; Hyun, Jungmoon & Ashaie, Sameer (2018). A facilitatory effect of rich stem allomorphy but not inflectional productivity on single-word recognition. Applied Psycholinguistics. ISSN 0142-7164. s 1- 18 . doi: 10.1017/S0142716418000292
- Waris, Otto; Soveri, Anna; Lukasik, Karolina M; Lehtonen, Minna & Laine, Matti (2018). Working memory and the Big Five. Personality and Individual Differences. ISSN 0191-8869. 130, s 26- 35 . doi: 10.1016/j.paid.2018.03.027