Backward masking interrupts spatial attention, slows downstream processing, and limits conscious perception.
Talia Losier, Christine Lefebvre, M. Doro, Roberto Dell'Acqua, P. Jolicœur
Consciousness and Cognition September 1, 2017 DOI: 10.1016/j.concog.2017.04.005 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Electrophysiological study Peer reviewed |
|---|---|
| Measures | N2pc, P3a, P3b |
| Key points | The presence of a backward mask in an attentional blink paradigm reduced the amplitude of the N2pc, P3a, and P3b event-related potential components. The authors argue that masking not only reduces encoding in memory but also reduces the effectiveness of the deployment and engagement of attention on the last target. |
Abstract
The attentional blink (AB) is a difficulty in correctly processing a target when it follows one or more other targets after a short delay. When no backward mask is presented after the last critical target, there is no or little behavioral AB deficit. The mask plays an important role in limiting conscious access to target information. In this electrophysiological study, we tested the impact of masking on the deployment and engagement of attention by measuring the N2pc and P3 components in an RSVP paradigm. We found that the presence of a mask in an AB paradigm reduced the amplitude of the N2pc, P3a, and P3b components. In addition to reducing encoding in memory, masking also reduced the effectiveness of the deployment and engagement of attention on the last target. We discuss the role of these findings in the context of current masking, consciousness, and AB models.