title: Commentary: Swapping or Dropping? Electrophysiological Measures of Difficulty during Multiple Object Tracking.
authors.affiliation: Department of Philosophy, Pontifical University of John Paul II Kraków, Poland.
authors.forename: Błażej
authors.initials: B
authors.lastname: Skrzypulec
keywords: contralateral delay activity (CDA); equivalence relations; multiple object tracking; object perception; visual sameness