word production

A TMS investigation of left middle-MTG involvement in lemma access in speech production and comprehension

According to a prominent account, lemmas are abstract word representations that act as central relay hub for accessing conceptual, phonological, and syntactic representations linked to a word (Levelt et al., 1999). They are crucial for both speaking, …

Do alpha and beta oscillations dissociate in context-driven spoken-word production?

Alpha- and beta-band oscillatory power decreases have been consistently found in spoken-word production, and localized to left lateral-temporal and lateral-frontal lobes (e.g., Piai et al., 2015; Roos & Piai, 2020). These oscillations have been …

fMRI evidence for shared lemma representations in speech production and comprehension

On a prominent account, lemma representations map the meaning of words to their sounds and vice-versa, and are shared across production and comprehension (Levelt et al., 1999). A meta-analysis of word production studies suggests that lemmas are …

Functional neuroanatomy of context-driven word retrieval: across-session consistency in fMRI

Functional magnetic resonance imaging (fMRI) is suitable for mapping the functional neuroanatomy of cognitive processes. However, mapping brain areas for specific tasks with fMRI does not necessarily guarantee validity, as activity profiles can vary …

Microstructural integrity of crucial white-matter tracts for category fluency in elderly with cerebral small vessel disease

Recent studies have suggested that language production abilities decline in patients with small vessel disease (SVD) a pathology that is one of the main contributors of cognitive impairment in older adults. The loss of microstructural integrity in …

The role of the basal ganglia in inflectional encoding: An fMRI study of producing the past tense

According to a prominent account of inflectional encoding (Pinker & Ullman, 2002), regular forms are encoded by a rule-governed combination of stems and affixes, whereas irregular forms are retrieved from memory while inhibiting rule application. …

Intersections between production and other cognitive domains

Research line

Lexical selection and the (pre)supplementary motor area white matter system

The supplementary and pre-supplementary motor areas (SMA and pre-SMA) has been suggested as involved in language processing since the early ages of electrical stimulation mapping. However they received far less attention in this sense than the …

Semi-spontaneous language production in Dutch speaking people with primary progressive aphasia

Primary progressive aphasia (PPA) is a neurodegenerative language disorder. Despite recent research, this disorder is studied less than vascular aphasia. There are three main accepted variants: nonfluent/agrammatic PPA (nfv-PPA), semantic PPA …

Why we speak affects how we speak: electrophysiological signatures of word planning following verbal versus nonverbal material

It is unclear whether there are differences in the neural mechanisms of word planning when it arises after processing of verbal versus nonverbal material. Twenty participants took part in an EEG experiment where they completed verbal- and …