Redundancy gains and costs in cognitive processing: effects of short stimulus onset asynchronies.
In 7 experiments, the influence of varying stimulus onset asynchronies (SOAs) on the processing of redundant information about words and pseudowords was investigated. All stimuli were visually presented once or twice with 2 copies of the same item flashed either simultaneously or with short SOAs between presentations. The experiments revealed a redundancy gain for words that was absent for pseudowords. Furthermore, the redundancy gain disappeared at an SOA of 50 ms, and there was a gradual performance decline at longer SOAs. However, probing SOAs of 150 and 300 ms revealed that, compared with presentation of 1 target stimulus alone, words were processed significantly faster when target and redundantcopy appeared with a 150-ms lag. The results are tentatively explained in a neurocognitive framework.
Mohr
Bettina
B
Medical Research Council, Cognition and Brain Sciences Unit, Cambridge, United Kingdom. bettina.mohr@mrc-cbu.cam.ac.uk
Pulvermüller
Friedemann
F
D000328:Adult; D001288:Attention; D005260:Female; D005403:Fixation, Ocular; D006801:Humans; D008297:Male; D011939:Mental Recall; D009949:Orientation; D010153:Paired-Associate Learning; D011930:Reaction Time; D011932:Reading; D014794:Visual Fields