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      The involvement of centralized and distributed processes in sub-second time interval adaptation: an ERP investigation of apparent motion

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      Embargo Lift Date: 2018-10-13
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      Author(s)
      Kaya, Utku
      Yildirim, Fazilet Zeynep
      Kafaligonul, Hulusi
      Date
      2017
      Source Title
      European Journal of Neuroscience
      Print ISSN
      0953-816X
      Publisher
      Blackwell Publishing Ltd
      Volume
      46
      Issue
      8
      Pages
      2325 - 2338
      Language
      English
      Type
      Article
      Item Usage Stats
      250
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      309
      downloads
      Abstract
      Accumulating evidence suggests that the timing of brief stationary sounds affects visual motion perception. Recent studies have shown that auditory time interval can alter apparent motion perception not only through concurrent stimulation but also through brief adaptation. The adaptation after-effects for auditory time intervals was found to be similar to those for visual time intervals, suggesting the involvement of a central timing mechanism. To understand the nature of cortical processes underlying such after-effects, we adapted observers to different time intervals using either brief sounds or visual flashes and examined the evoked activity to the subsequently presented visual apparent motion. Both auditory and visual time interval adaptation led to significant changes in the ERPs elicited by the apparent motion. However, the changes induced by each modality were in the opposite direction. Also, they mainly occurred in different time windows and clustered over distinct scalp sites. The effects of auditory time interval adaptation were centred over parietal and parieto-central electrodes while the visual adaptation effects were mostly over occipital and parieto-occipital regions. Moreover, the changes were much more salient when sounds were used during the adaptation phase. Taken together, our findings within the context of visual motion point to auditory dominance in the temporal domain and highlight the distinct nature of the sensory processes involved in auditory and visual time interval adaptation. © 2017 Federation of European Neuroscience Societies and John Wiley & Sons Ltd
      Keywords
      Apparent motion
      Auditory adaptation
      Event-related potentials
      Sub-second time intervals
      Visual adaptation
      Adaptation
      Adult
      Apparent motion perception
      Auditory lateralization
      Controlled study
      Event related potential
      Human
      Human experiment
      Movement perception
      Normal human
      Occipital cortex
      Priority journal
      Scalp
      Sound
      Time perception
      Vision
      Visual adaptation
      Permalink
      http://hdl.handle.net/11693/37089
      Published Version (Please cite this version)
      http://dx.doi.org/10.1111/ejn.13691
      Collections
      • Aysel Sabuncu Brain Research Center (BAM) 249
      • National Magnetic Resonance Research Center (UMRAM) 301
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