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Effects of premature lure stimuli on 2nd‐target identification in rapid serial visual presentation: Inhibition induced by lures or by 1st target?
Author(s) -
Verleger Rolf,
Śmigasiewicz Kamila,
Michael Lars,
Niedeggen Michael
Publication year - 2012
Publication title -
psychophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.661
H-Index - 156
eISSN - 1469-8986
pISSN - 0048-5772
DOI - 10.1111/j.1469-8986.2012.01408.x
Subject(s) - psychology , priming (agriculture) , rapid serial visual presentation , negative priming , audiology , neuroscience , perception , selective attention , cognition , medicine , biology , botany , germination
In many rapid serial presentation tasks, two targets (“ T 1” and “ T 2”) have to be distinguished from background stimuli. Here, digits (“lures”) were interspersed among the background letters, differing from the T 2 digit by occurring before rather than after T 1. The resulting inhibitory effects on T 2 identification may either be evoked directly by the lures or be triggered by T 1, interfering with positive priming of lures on T 2. To distinguish between these two alternatives, lures, T 1, and T 2 were presented in two different simultaneously running streams, T 2 was or was not the same digit as a lure, and EEG potentials related to lures, T 1, and T 2 were recorded. Effects on T 2 identification better fit the view that lures exerted positive priming interrupted by T 1. Recurrence of lures in the trial led to abridged duration of the lure‐evoked N 2pc, and T 2‐evoked N 2pc was reduced after lures. Also these N2pc effects may reflect positive priming.