Figure 3. | Perceptual decisions are biased by the cost to act
Perceptual decisions are biased by the cost to act
University College London, United Kingdom; Center for Information and Neural Networks (CiNet), National Institute of Communications and Technology, Japan; Western University, Canada
Download figureOpen in new tabFigure 3. Trial structure of Experiment 4 and the effect of preceding motor cost experience on participants' motion judgements.
(A) In Experiment 4, participants made vocal judgements to a yes-no motion detection task, and manual judgement to a left-right discrimination task. (B): Shift of the criterion of motion detection from the baseline during the vocal judgement task in Experiment 4 (d' data is presented in the Figure 3—Figure Supplement 1C). Negative value indicates the shift towards more conservative criterion for the motion detection. (C) PSE shift from the baseline condition in Experiment 3, plotted against the number of trials from the preceding manual judgements. Negative value indicates the shift of PSE towards the motion direction with resistance (i.e. decreased judgements towards the motion direction having resistance in their manual response). (D) Vocal motion detection criterion differences between the leftward (with manual response resistance) and rightward (without resistance) motion (Experiment 4). The difference is plotted against the number of trials from the preceding manual judgements. Negative value indicates a more conservative criterion for leftward than for rightward motion. Error bars indicate standard error of mean across participants. Data for Figure 3B–D is available as Figure 3—source data 1. *p<0.05.
Download figureOpen in new tabFigure 3—figure supplement 1. Task instruction of Experiment 3 and 4, and the d' data of Experiment 4.
(A,B) The task instruction of the vocal task in Experiment 3 (A) and 4 (B), where the participants were asked to vocally discriminate the motion direction (Experiment 3), or asked to vocally detect the motion for the instructed direction (Experiment 4). (C) Shift of the d-prime (sensitivity) of motion detection from the baseline during the vocal judgement task (Experiment 4). (D) Difference in d’ for leftward and rightward motion direction in the vocal judgement of Experiment 4, plotted against the number of trials from the preceding manual judgements. Positive value indicates the higher sensitivity for the rightward motion and the negative for the higher sensitivity to the leftward motion. Error bars indicate standard error of mean across participants.