Memory precision for salient distractors decreases with learned suppression
Attention operates as a cognitive gate that selects sensory information for entry intomemory and awareness (Driver, 2001). Under many circumstances, the selected information is task-relevant and important to remember, but it is also well known that perceptually salient non- target objects will capture attention and induce awareness even when they are irrelevant (Adams and Gaspelin, 2020). Recent studies have shown that task interference by salient distractors diminishes after repeated exposures, but the relationship between suppression and memory remain unclear. If attentional suppression (indicated by a reduced capture costs) occurs at the sensory level and prevents readout to other cognitive processes, one might expect memory and awareness to dimmish commensurate with improved suppression. Here we test this hypothesis by measuring memory precision, awareness, and confidence of salient non-targets over repetitions as capture costs are reduced. Our results show that better attentional suppression is accompanied by reductions in memory precision and awareness, suggesting that reductions in capture costs reflect a reduction in the likelihood of the distractor entering memory and awareness.