Schlaghecken Friederike, Blagrove Elisabeth, Maylor Elizabeth A
Department of Psychology, University of Warwick, Coventry CV4 7AL, UK.
Conscious Cogn. 2008 Mar;17(1):84-93. doi: 10.1016/j.concog.2006.11.004. Epub 2006 Dec 28.
Negative compatibility effects (NCEs) in the masked-prime paradigm are usually obtained when primes are masked effectively. With ineffective masks-and primes above the perceptual threshold-positive compatibility effects (PCEs) occur. We investigated whether this pattern reflects a causal relationship between conscious awareness and low-level motor control, or whether it reflects the fact that both are affected in the same way by changes in physical stimulus attributes. In a 5-session perceptual learning task, participants learned to consciously identify masked primes. However, they showed unaltered NCEs that were not different from those produced by participants in a control group without equivalent perceptual learning. A control experiment demonstrated that no NCEs occur when prime identification is made possible by ineffective masking. The results suggest that perceptual awareness and low-level motor control are affected by the same factors, but are fundamentally independent of each other.
在掩蔽启动范式中，当启动刺激被有效掩蔽时，通常会获得负兼容性效应（NCEs）。当掩蔽无效且启动刺激高于知觉阈值时，会出现正兼容性效应（PCEs）。我们研究了这种模式是反映了意识觉知与低水平运动控制之间的因果关系，还是反映了两者都以相同方式受到物理刺激属性变化影响这一事实。在一个为期5节的知觉学习任务中，参与者学会有意识地识别掩蔽启动刺激。然而，他们表现出未改变的NCEs，与没有进行等效知觉学习的对照组参与者所产生的NCEs没有差异。一项对照实验表明，当通过无效掩蔽使启动刺激识别成为可能时，不会出现NCEs。结果表明，知觉觉知和低水平运动控制受相同因素影响，但从根本上相互独立。
