Twenty-six participants performed a cued orientation detection task. The task consisted of an informative cue (indicating right or left side) or uninformative cue (pointing towards both the left and right), then a target on the left or right pointing in one direction followed by a backward mask, a short delay, and then a response screen where participants used the mouse to rotate the pointing stimuli so that it matches the orientation of the target. Errors were quantified as the difference between the target orientation and the orientation of participants’ response. The errors on each trial were fit to standard mixed model with a bias parameter to get the parameter values g (guess rate) and σ (precision). From the model, we estimated precision and guess rate as a function of informative vs. uninformative cue and left target vs right target. We found a difference in performance between informative and uninformative cue when the target was on the left side, but no difference between cue types when the target was on the right side. I will discuss possible interpretations of the results, and present ideas on possible underlying causes.

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