Electrophysiological evidence that inhibition supports lexical selection in picture naming

Zeshu Shao, Ardi Roelofs, Daniel J Acheson, Antje S Meyer

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

We investigated the neural basis of inhibitory control during lexical selection. Participants overtly named pictures while response tims (RTs) and event-related brain potentials (ERPs) were recorded. The difficulty of lexical selection was manipulated by using object and action pictures with high name agreement (few response candidates) versus low name agreement (many response candidates). To assess the involvement of inhibition, we conducted delta plot analyses of naming RTs and examined the N2 component of the ERP. We found longer mean naming RTs and a larger N2 amplitude in the low relative to the high name agreement condition. For action naming we found a negative correlation between the slopes of the slowest delta segment and the difference in N2 amplitude between the low and high name agreement conditions. The converging behavioral and electrophysiological evidence suggests that selective inhibition is engaged to reduce competition during lexical selection in picture naming.
Original languageEnglish
Pages (from-to)130-142
JournalBrain Research
Volume1586
DOIs
Publication statusPublished - 16 Sep 2014

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