Conflicting Sensory Information Sharpens the Neural Representations of Early Selective Visuospatial Attention

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Figure 1.
Figure 1.

An adapted version of the attention-cueing Eriksen flanker task and behavioral results. a, An example of a trial sequence began with an arrow cue at the fixation pointing to one of the 12 possible target locations, followed by a circular array of 12 visual stimuli rendered in red or blue. Participants had to discriminate the shape of a visual target where the arrow was pointing (either a diamond or an hourglass). They received feedback at the end of each trial, telling them if they responded correctly, incorrectly, or too slowly. b, Trial types. In each trial, a target stimulus was surrounded by either congruent or incongruent adjacent distractors (i.e., flankers) whose shape matched or mismatched the shape of the target, respectively. Fifty percent of the trials contained a salient distractor whose color was different from the rest of the visual stimuli in the circular array. The other 50% of the trials contained no salient distractors. c, Hit rates were significantly reduced in the incongruent compared with the congruent conditions as well as in trials with versus those without distractors. d, Response times in correct trials (i.e., correct RTs) were increased in the incongruent compared with the congruent conditions. There was no significant effect of distractor saliency on correct RTs. Error bars represent the within-subject standard error of the mean (SEM).

  1. The Journal of Neuroscience vol. 44 no. 33
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