Reward-associated stimuli capture the eyes in spite of strategic attentional set

Research output: Contribution to journalArticle

Authors

Colleges, School and Institutes

External organisations

  • Vrije Universiteit Amsterdam
  • CNR-INFM BEC Center

Abstract

Theories of reinforcement learning have proposed that the association of reward to visual stimuli may cause these objects to become fundamentally salient and thus attention-drawing. A number of recent studies have investigated the oculomotor correlates of this reward-priming effect, but there is some ambiguity in this literature regarding the involvement of top-down attentional set. Existing paradigms tend to create a situation where participants are actively looking for a reward-associated stimulus before subsequently showing that this selective bias sustains when it no longer has strategic purpose. This perseveration of attentional set is potentially different in nature than the direct impact of reward proposed by theory. Here we investigate the effect of reward on saccadic selection in a paradigm where strategic attentional set is decoupled from the effect of reward. We find that during search for a uniquely oriented target, the receipt of reward following selection of a target characterized by an irrelevant unique color causes subsequent stimuli characterized by this color to be preferentially selected. Importantly, this occurs regardless of whether the color characterizes the target or distractor. Other analyses demonstrate that only features associated with correct selection of the target prime the target representation, and that the magnitude of this effect can be predicted by variability in saccadic indices of feedback processing. These results add to a growing literature demonstrating that reward guides visual selection, often in spite of our strategic efforts otherwise.

Details

Original languageEnglish
Pages (from-to)67-74
Number of pages8
JournalVision Research
Volume92
Publication statusPublished - 1 Nov 2013

Keywords

  • Eye movements, Oculomotor capture, Reward, Reward priming

ASJC Scopus subject areas