The Impact of Feedback on the Different Time Courses of Multisensory Temporal Recalibration.
The capacity to rapidly adjust perceptual representations confers a fundamental advantage when confronted with a constantly changing world. Unexplored is how feedback regarding sensory judgments (top-down factors) interacts with sensory statistics (bottom-up factors) to drive long- and short-term recalibration of multisensory perceptual representations. Here, we examined the time course of both cumulative and rapid temporal perceptual recalibration for individuals completing an audiovisual simultaneity judgment task in which they were provided with varying degrees of feedback. We find that in the presence of feedback (as opposed to simple sensory exposure) temporal recalibration is more robust. Additionally, differential time courses are seen for cumulative and rapid recalibration dependent upon the nature of the feedback provided. Whereas cumulative recalibration effects relied more heavily on feedback that informs (i.e., negative feedback) rather than confirms (i.e., positive feedback) the judgment, rapid recalibration shows the opposite tendency. Furthermore, differential effects on rapid and cumulative recalibration were seen when the reliability of feedback was altered. Collectively, our findings illustrate that feedback signals promote and sustain audiovisual recalibration over the course of cumulative learning and enhance rapid trial-to-trial learning. Furthermore, given the differential effects seen for cumulative and rapid recalibration, these processes may function via distinct mechanisms.
Medical Scientist Training Program, Vanderbilt University Medical School, Vanderbilt University, Nashville, TN 37235, USA; Vanderbilt Brain Institute, Vanderbilt University Medical School, Vanderbilt University, Nashville, TN 37235, USA.
Matthew A
0000-0001-6499-4022
MA
De Niear
Vanderbilt Brain Institute, Vanderbilt University Medical School, Vanderbilt University, Nashville, TN 37235, USA; Neuroscience Graduate Program, Vanderbilt Brain Institute, Vanderbilt University Medical School, Vanderbilt University, Nashville, TN 37235, USA.
Jean-Paul
JP
Noel
Vanderbilt Brain Institute, Vanderbilt University Medical School, Vanderbilt University, Nashville, TN 37235, USA; Department of Hearing and Speech Sciences, Vanderbilt University Medical Center, Nashville, TN 37235, USA; Department of Psychology, Vanderbilt University, Nashville, TN 37235, USA; Department of Psychiatry, Vanderbilt University Medical Center, Nashville, TN 37235, USA.
Mark T
MT
Wallace
D000161:Acoustic Stimulation / Q000379:methods; D000293:Adolescent; D000328:Adult; D001307:Auditory Perception / Q000502:physiology*; D056228:Feedback, Sensory / Q000502:physiology*; D005260:Female; D006801:Humans; D007600:Judgment / Q000502:physiology*; D008297:Male; D010775:Photic Stimulation / Q000379:methods; D011897:Random Allocation; D013997:Time Factors; D013998:Time Perception / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*; D055815:Young Adult