Skora Lina I, Seth Anil K, Scott Ryan B
School of Psychology, University of Sussex, Pevensey Building, Falmer, Brighton BN1 9RH, UK.
Sackler Centre for Consciousness Science, University of Sussex, Falmer, Brighton, Brighton BN1 9RH, UK.
Neurosci Conscious. 2021 Mar 18;2021(1):niab003. doi: 10.1093/nc/niab003. eCollection 2021.
Accounts of predictive processing propose that conscious experience is influenced not only by passive predictions about the world, but also by predictions encompassing how the world changes in relation to our actions-that is, on predictions about sensorimotor contingencies. We tested whether valid sensorimotor predictions, in particular learned associations between stimuli and actions, shape reports about conscious visual experience. Two experiments used instrumental conditioning to build sensorimotor predictions linking different stimuli with distinct actions. Conditioning was followed by a breaking continuous flash suppression task, measuring the speed of reported breakthrough for different pairings between the stimuli and prepared actions, comparing those congruent and incongruent with the trained sensorimotor predictions. In Experiment 1, counterbalancing of the response actions within the breaking continuous flash suppression task was achieved by repeating the same action within each block but having them differ across the two blocks. Experiment 2 sought to increase the predictive salience of the actions by avoiding the repetition within blocks. In Experiment 1, breakthrough times were numerically shorter for congruent than incongruent pairings, but Bayesian analysis supported the null hypothesis of no influence from the sensorimotor predictions. In Experiment 2, reported conscious perception was significantly faster for congruent than for incongruent pairings. A meta-analytic Bayes factor combining the two experiments confirmed this effect. Altogether, we provide evidence for a key implication of the action-oriented predictive processing approach to conscious perception, namely that sensorimotor predictions shape our conscious experience of the world.
预测处理的相关论述表明,意识体验不仅受到对世界的被动预测的影响,还受到关于世界如何随我们的行动而变化的预测的影响,也就是说,受到关于感觉运动偶联的预测的影响。我们测试了有效的感觉运动预测,特别是刺激与行动之间的习得关联,是否会塑造关于有意识视觉体验的报告。两项实验采用工具性条件作用来建立将不同刺激与不同行动联系起来的感觉运动预测。条件作用之后是一个打破连续闪光抑制任务,测量报告的不同刺激与准备好的行动之间配对的突破速度,比较那些与训练的感觉运动预测一致和不一致的情况。在实验1中,通过在每个块内重复相同的行动但在两个块之间使其不同,实现了打破连续闪光抑制任务中反应行动的平衡。实验2试图通过避免块内重复来提高行动的预测显著性。在实验1中,一致配对的突破时间在数值上比不一致配对的短,但贝叶斯分析支持感觉运动预测无影响的零假设。在实验2中,报告的有意识感知对于一致配对比对不一致配对明显更快。结合这两项实验的元分析贝叶斯因子证实了这种效应。总之,我们为有意识感知的面向行动的预测处理方法的一个关键含义提供了证据,即感觉运动预测塑造了我们对世界的有意识体验。