Eur J of Neuroscience - 2022 - Merkel - Electrophysiological hallmarks of location%u2010based and object%u2010based visual multiple.pdf 9,80MB
1000 Titel
  • Electrophysiological hallmarks of location-based and object-based visual multiple objects tracking
1000 Autor/in
  1. Merkel, Christian |
  2. Hopf, Jens-Max |
  3. Schoenfeld, Mircea Ariel |
1000 Erscheinungsjahr 2022
1000 LeibnizOpen
1000 Publikationstyp
  1. Artikel |
1000 Online veröffentlicht
  • 2022-01-24
1000 Erschienen in
1000 Quellenangabe
  • 55(5):1200-1214
1000 FRL-Sammlung
1000 Copyrightjahr
  • 2022
1000 Lizenz
1000 Verlagsversion
  • |
1000 Ergänzendes Material
  • |
1000 Publikationsstatus
1000 Begutachtungsstatus
1000 Sprache der Publikation
1000 Abstract/Summary
  • Converging evidence shows that our visual system can track multiple visual, independently moving items over time. This is accomplished location-based by maintaining the individual spatial information of each target item or object-based by constructing an abstract object-based representation out of the tracked items. Previous work showed specific behavioural, electrophysiological and haemodynamic markers for location-based or object-based representations of the relevant targets by probing the encoded information subsequently after tracking. However, domain-specific differences of representational correlates during visual tracking itself have not been reported yet. The current study aims to identify spectral properties of the electrophysiological signal during tracking that might indicate location-based versus object-based maintenance of visual information. Subjects had to covertly track four out of eight visually identical items for several seconds while electrophysiological signals were recorded. Subsequently, a probe consisting of four items appeared and the subjects had to indicate with a button press whether the probe matched all targets or not. Subjects employing an object-based strategy showed an enhanced gamma response during the presentation of the target items at the beginning of the trial. On the other hand, subjects using a location-based strategy showed enhanced gamma synchronization throughout the tracking itself. Both the object- and location-based gamma responses yielded identical spatial topographical field distributions. These results indicate that object-based tracking is supported by enhanced encoding during the initial presentation of the targets to be tracked. Location-based tracking is characterized by the sustained maintenance of the individual targets during the entire tracking period in that same processing network.
1000 Sacherschließung
lokal multiple object tracking
lokal principal component analysis
lokal gamma oscillations
lokal object-based attention
1000 Fächerklassifikation (DDC)
1000 Liste der Beteiligten
1000 Label
1000 Förderer
  1. Deutsche Forschungsgemeinschaft |
1000 Fördernummer
  1. SFB1436/B05
1000 Förderprogramm
  1. -
1000 Dateien
  1. Electrophysiological hallmarks of location-based and object-based visual multiple objects tracking
1000 Förderung
  1. 1000 joinedFunding-child
    1000 Förderer Deutsche Forschungsgemeinschaft |
    1000 Förderprogramm -
    1000 Fördernummer SFB1436/B05
1000 Objektart article
1000 Beschrieben durch
1000 @id frl:6432806.rdf
1000 Erstellt am 2022-04-05T11:17:35.904+0200
1000 Erstellt von 242
1000 beschreibt frl:6432806
1000 Bearbeitet von 317
1000 Zuletzt bearbeitet Tue Apr 19 13:59:23 CEST 2022
1000 Objekt bearb. Tue Apr 19 13:58:55 CEST 2022
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