title: Inhibitory mechanisms in single negative priming from ignored and briefly flashed primes: the key role of the inter-stimulus interval.
abstract: The influence of interstimulus intervals (ISIs) on priming effects was investigated using a single-prime negative priming (NP) paradigm. In all experiments, a brief (16ms), centrally displayed prime (a Chinese character, to be ignored) appeared, followed by a pattern mask and then a centrally displayed target (another semantically related or unrelated Chinese character); the task required semantic categorization (animate/inanimate) of the target. An ISI could occur either between prime and mask (Experiments 1 and 5) or between mask and target (Experiments 2-4). The results revealed NP when a 470ms ISI occurred between prime and mask (Experiments 1 and 5) and when a 700ms ISI occurred between mask and target (Experiments 3 and 4). In contrast, when a long prime-target SOA was maintained but the mask-target ISI was shortened, NP disappeared (Experiment 4). The results indicated that a persisting mask/distractor (without ISI) located in the same position as the following target interfered with the buildup of inhibition, but an ISI between prime and mask or mask and target eliminated this interference, and that inhibition processes induced by an ignore instruction were implemented faster with an ISI placed between prime and mask than with an ISI placed between mask and target.
authors.affiliation: School of Psychology, Shaanxi Normal University, Xi'an, China; Shaanxi Provincial Key Laboratory of Behavior & Cognitive Neuroscience, Xi'an, China. Electronic address: wyonghui@snnu.edu.cn.
authors.forename: Yonghui
authors.initials: Y
authors.lastname: Wang
authors.affiliation: School of Psychology, Shaanxi Normal University, Xi'an, China; Shaanxi Provincial Key Laboratory of Behavior & Cognitive Neuroscience, Xi'an, China.
authors.forename: Jingjing
authors.initials: J
authors.lastname: Zhao
authors.affiliation: School of Psychology, Shaanxi Normal University, Xi'an, China; Shaanxi Provincial Key Laboratory of Behavior & Cognitive Neuroscience, Xi'an, China.
authors.forename: Peng
authors.initials: P
authors.lastname: Liu
authors.affiliation: School of Psychology, Shaanxi Normal University, Xi'an, China; Shaanxi Provincial Key Laboratory of Behavior & Cognitive Neuroscience, Xi'an, China.
authors.forename: Lianyu
authors.initials: L
authors.lastname: Wei
authors.affiliation: School of Psychology, Shaanxi Normal University, Xi'an, China; Shaanxi Provincial Key Laboratory of Behavior & Cognitive Neuroscience, Xi'an, China.
authors.forename: Meilin
authors.initials: M
authors.lastname: Di
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007266:Inhibition, Psychological; D008297:Male; D010470:Perceptual Masking / Q000502:physiology*; D011597:Psychomotor Performance / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology; D060865:Repetition Priming / Q000502:physiology*; D013997:Time Factors; D055815:Young Adult
keywords: Inhibitory mechanism; Interstimulus intervals; Masked prime; Negative priming