The Unconscious Eye Opener: Pupil Dilation Reveals Strategic Recruitment of Resources Upon Presentation of Subliminal Reward Cues
The Unconscious Eye Opener: Pupil Dilation Reveals Strategic Recruitment of Resources Upon Presentation of Subliminal Reward Cues
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DOI：
10.1111/j.1467-9280.2009.02443.x
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发表时间：
2009-11-01
影响因子：
8.2
通讯作者：
Aarts, Henk
中科院分区：
文献类型：
--
作者：
Bijleveld, Erik;Custers, Ruud;Aarts, Henk
METHODFifteen participants (mean age 5 21 years) performed a digitretention task in which they could earn a coin (1 or 50 euro cents, or c) presented on the computer screen by correctly recalling a subsequent series of digits. They were told that the coin would sometimes be ‘‘difficult to perceive.’’Accordingly, in half of the trials, the coin was presented supraliminally (ie, was consciously perceivable); in the other half, the coin was presented subliminally (Pessiglione et al., 2007). The number of random digits to be recalled also varied (three vs. five). If participants responded correctly (mean accuracy 5 96.9%) on the digit task, they received the coin.Each trial in the digit-retention task featured a fixation cross (4,000 ms), followed by a premask (400 ms), the coin stimulus (171 or 300 ms), and a postmask (583 or 300 ms; total duration of the masks and coin was always 1,000 ms). Next, participants saw another cross (2,000 ms), after which the number of upcoming digits was announced (eg,‘‘3 digits’’; 2,000 ms). Then, another fixation cross was shown, and after 3,000 ms the digits were presented aurally (1 per second). After 4,000 ms (retention in-
