EEG correlates of cognitive time scales in the Necker-Zeno model for bistable perception |
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| Institution: | 1. Faculty of Engineering and Computer Science, Department of General Psychology, University of Ulm, 89960 Ulm, Germany;2. Experimental Psychology Lab, Department of Psychology, European Medical School, Carl von Ossietzky Universität, 26111 Oldenburg, Germany;3. Research Center Neurosensory Science, Carl von Ossietzky Universität, 26111 Oldenburg, Germany;4. Institute of Psychology and Cognition Research, University of Bremen, 28334 Bremen, Germany;5. Center for Cognitive Sciences, University of Bremen, 28334 Bremen, Germany;1. Cognitive Neuroscience Research Unit, Hammel Rehabilitation and Research Center, Voldbyvej 15, 8450 Hammel, Denmark;2. Cognitive Neuroscience Research Unit, Aarhus University Hospital, Noerrebrogade 44, Building 10G, 8000 Aarhus C, Denmark;3. Institute of Cognitive Neuroscience, University College London, 17 Queen Square, WC1N 3AR London, United Kingdom;4. Wellcome Trust Centre for Neuroimaging, Institute of Neurology, 12 Queen Square, WC1N 3AR London, United Kingdom;5. Interacting Minds Centre, Aarhus University, Jens Chr. Skous Vej 4, Building 1483, 3rd floor 8000 Aarhus C, Denmark;6. Sackler Centre for Consciousness Science, School of Psychology, Pevensey 1, BN1 9QH Falmer, United Kingdom |
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| Abstract: | The Necker-Zeno model of bistable perception provides a formal relation between the average duration of meta-stable percepts (dwell times T) of ambiguous figures and two other basic time scales (t0, ΔT) underlying cognitive processing. The model predicts that dwell times T covary with t0, ΔT or both. We tested this prediction by exploiting that observers, in particular experienced meditators, can volitionally control dwell times T.Meditators and non-meditators observed bistable Necker cubes either passively or tried to hold their current percept. The latencies of a centro-parietal event-related potential (CPP) were recorded as a physiological correlate of t0.Dwell times T and the CPP latencies, correlated with t0, differed between conditions and observer groups, while ΔT remained constant in the range predicted by the model. The covariation of CPP latencies and dwell times, as well as their quadratic functional dependence extends previous psychophysical confirmation of the Necker-Zeno model to psychophysiological measures. |
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| Keywords: | Ambiguous figures Bistable perception Necker cube EEG Event-related potentials Meditation Cognitive time scales Necker-Zeno model Quantum cognition |
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