Motor activation without conscious discrimination in metacontrast masking
Motor activation without conscious discrimination in metacontrast masking
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DOI：
10.1037/0096-1523.25.4.976
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发表时间：
1999-08-01
影响因子：
2.1
通讯作者：
Neumann, O
中科院分区：
文献类型：
--
作者：
Klotz, W;Neumann, O
九个实验研究了在蒙面启动前对几何刺激（目标和干扰物）的运动反应。在一致性实验中，目标前面有一个较小的类目标形状，而干扰物前面有一个较小的类干扰物形状。在不一致的试验中，这种安排被颠倒了。在中性试验中，两个启动物都是类似分心物的形状。这些启动条件对反应时间和错误率的影响非常显著，尽管没有对启动物的有意识区分，通过判别指数（d'或d(s)）评估，与0没有不同。这一结果存在于时间压力、反馈、实践和经济激励等条件下。在每次试验中，反应时间和辨别任务被阻断、交替、随机混合或组合的情况下，它保持不变。结果表明，在没有意识辨别的情况下存在运动激活。
Nine experiments investigated motor responses to geometric stimuli (a target and a distractor) preceded by masked primes. In congruent trials, the target was preceded by a smaller target-like shape and the distracter by a smaller distracter-like shape. In incongruent trials this arrangement was reversed. In neutral trials both primes were distracter-like shapes. Highly significant effects of these priming conditions on reaction time and error rate were found, although there was no conscious discrimination of primes, as assessed by a discrimination index (d' or d(s)) not different from 0. This result subsisted under conditions of time pressure, feedback, practice, and financial incentive in the discrimination task. It remained unchanged under conditions in which the reaction time and discrimination tasks were blocked, alternated, randomly mixed, or combined on each trial. It is concluded that motor activation without conscious discrimination was demonstrated.