19 research outputs found
Modeling one-handed grip strangulation: Intentionality of the gesture and age influence
International audienc
ContrÎle qualité en Imagerie par Résonance Magnétique (IRM)
CERVOXYNational audienc
ContrÎle qualité en Imagerie par Résonance Magnétique (IRM)
CERVOXYNational audienc
Impact dâun algorithme de machine learning de resampling sur les radiomiques en IRM
CERVOXYNational audienc
Impact dâun algorithme de machine learning de resampling sur les radiomiques en IRM
CERVOXYNational audienc
Electroencephalographic characteristics of word finding during phonological and semantic verbal fluency tasks
Abstract Aims Verbal Fluency is sensitive to brain damage and is employed to assess language abilities like the size of vocabulary and the semanticâlexical networksâ integrity and executive functioning abilities particularly inhibition, working memory, and selfâmonitoring. Various studies revealed oscillatory changes related to word retrieval during different tasks. However, there are not enough studies on electroencephalographic characteristics of word retrieval routes (phonological or semantic pathway) during free recall. The purpose of our study was to investigate electroencephalography power relationship with semantic and phonological word finding routes during verbal fluency. Methods In this withinâsubject study, the electroencephalography of 20 healthy participants was recorded during written category and letter fluency tasks and compared with the rest state. Absolute power of the signals in delta (1â3.5 Hz), theta (4â7.5 Hz), alpha (8â12 Hz), and beta (12.5â30 Hz) was calculated in three lobes (frontal, parietal, and temporal). Results A repeated measures ANOVA showed significant interaction of condition Ă lobe Ă frequency Ă side (P < .001). Post hoc test for each lobe showed significant changes in the absolute power of delta, theta and beta for frontal, delta and theta for parietal, and theta and beta for temporal lobes (Pâvalues < .05). Conclusion Searching the words by phonological entries is associated with decreased beta and increased theta in left frontal lobe. These changes are not necessary for semantic word retrieval strategy
BIGFOOT SYSTEMS(R)
Peer reviewed: NoNRC publication: Ye