Attentional gain is modulated by probabilistic feature expectations in a spatial cueing task: ERP evidence.
Por:
Marzecova A, Schettino A, Widmann A, San Miguel-Insúa I, Kotz SA and Schroger E
Publicada:
8 ene 2018
Ahead of Print:
8 ene 2018
Categoría:
Multidisciplinary
Resumen:
Several theoretical and empirical studies suggest that attention and perceptual expectations influence perception in an interactive manner, whereby attentional gain is enhanced for predicted stimuli. The current study assessed whether attention and perceptual expectations interface when they are fully orthogonal, i.e., each of them relates to different stimulus features. We used a spatial cueing task with block-wise spatial attention cues that directed attention to either left or right visual field, in which Gabor gratings of either predicted (more likely) or unpredicted (less likely) orientation were presented. The lateralised posterior N1pc component was additively influenced by attention and perceptual expectations. Bayesian analysis showed no reliable evidence for the interactive effect of attention and expectations on the N1pc amplitude. However, attention and perceptual expectations interactively influenced the frontally distributed anterior N1 component (N1a). The attention effect (i.e., enhanced N1a amplitude in the attended compared to the unattended condition) was observed only for the gratings of predicted orientation, but not in the unpredicted condition. These findings suggest that attention and perceptual expectations interactively influence visual processing within 200 ms after stimulus onset and such joint influence may lead to enhanced endogenous attentional control in the dorsal fronto-parietal attention network.
Filiaciones:
Marzecova A:
Institute of Psychology, Leipzig University, Leipzig, Germany.
Department of Experimental and Applied Psychology, Vrije Universiteit Brussel, Brussels, Belgium.
Schettino A:
Department of Experimental-Clinical and Health Psychology, Ghent University, Ghent, Belgium
Widmann A:
Institute of Psychology, Leipzig University, Leipzig, Germany
San Miguel-Insúa I:
Brainlab-Cognitive Neuroscience Research Group, Department of Clinical Psychology and Psychobiology, University of Barcelona, Barcelona, Spain
Institute of Neurosciences, University of Barcelona, Barcelona, Spain
Institut de Recerca Sant Joan de Déu (IR-SJD), Barcelona, Spain
Kotz SA:
Faculty of Psychology and Neuroscience, Department of Neuropsychology & Psychopharmacology, Maastricht University, Maastricht, The Netherlands
Schroger E:
Institute of Psychology, Leipzig University, Leipzig, Germany
Open Access
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