Perceptual continuity across saccades

Jasper Hajo Fabius

Research output: ThesisDoctoral thesis 1 (Research UU / Graduation UU)

Abstract

How perceptual continuity across saccades emerges from the visual system is a longstanding question in visual neuroscience. As the experiments in this thesis support, this most likely arises from the interaction of retinal and extra-retinal signals, resulting in spatiotopic updating of visual information. The presented studies demonstrate that perceptual judgements reflect spatiotopic updating, and that this is robust to selective cortical lesions. In addition to existing suggestions for neural mechanisms underlying spatiotopic updating, I suggest an alternative explanation involving postdictive updating. Together these results provide clear directions for further investigations into perceptual continuity across saccades. The results of these future studies will be of interest to a broad scientific audience, because perceptual continuity across saccades is a case example that organisms dissociate the sensory input that result of changes outside themselves from the sensory input that result of their own motor output. As such, the processes underlying this dissociation might affect humans, ants and squirrels alike.
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • Utrecht University
Supervisors/Advisors
  • van der Stigchel, Stefan, Primary supervisor
  • Nijboer, Tanja, Co-supervisor
  • Fracasso, A., Co-supervisor
Award date6 Sept 2019
Publisher
Publication statusPublished - 6 Sept 2019

Keywords

  • perception
  • vision
  • saccade
  • psychophysics
  • eye tracking
  • magnetoencephalography
  • lesion symptom mapping

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