From meaning to categorization: The hierarchical recruitment of brain circuits selective for action verbs

Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
Riccardo Dalla VoltaMaddalena Fabbri-Destro

Abstract

Sensorimotor and affective brain systems are known to be involved in language processing. However, to date it is still debated whether this involvement is a crucial step of semantic processing or, on the contrary, it is dependent on the specific context or strategy adopted to solve a task at hand. The present electroencephalographic (EEG) study is aimed at investigating which brain circuits are engaged when processing written verbs. By aligning event-related potentials (ERPs) both to the verb onset and to the motor response indexing the accomplishment of a semantic task of categorization, we were able to dissociate the relative stimulus-related and response-related cognitive components at play, respectively. EEG signal source reconstruction showed that while the recruitment of sensorimotor fronto-parietal circuits was time-locked with action verb onset, a left temporal-parietal circuit was time-locked to the task accomplishment. Crucially, by comparing the time course of both these bottom-up and top-down cognitive components, it appears that the frontal motor involvement precedes the task-related temporal-parietal activity. The present findings suggest that the recruitment of fronto-parietal sensorimotor circuits is independent...Continue Reading

Citations

Jun 21, 2018·CNS Neuroscience & Therapeutics·Giacomo RizzolattiPietro Avanzini
Aug 21, 2018·Frontiers in Psychology·Brenda SteebAdolfo M García
Jan 31, 2020·Frontiers in Human Neuroscience·David JensonTim Saltuklaroglu
Feb 15, 2020·Scientific Reports·Doriana De MarcoMaddalena Fabbri-Destro
Oct 15, 2019·Frontiers in Psychology·Elisa De Stefani, Doriana De Marco

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