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Effects of feature-selective and spatial attention at different stages of visual processing.
J Cogn Neurosci. 2011 Jan; 23(1):238-46.JC

Abstract

We investigated mechanisms of concurrent attentional selection of location and color using electrophysiological measures in human subjects. Two completely overlapping random dot kinematograms (RDKs) of two different colors were presented on either side of a central fixation cross. On each trial, participants attended one of these four RDKs, defined by its specific combination of color and location, in order to detect coherent motion targets. Sustained attentional selection while monitoring for targets was measured by means of steady-state visual evoked potentials (SSVEPs) elicited by the frequency-tagged RDKs. Attentional selection of transient targets and distractors was assessed by behavioral responses and by recording event-related potentials to these stimuli. Spatial attention and attention to color had independent and largely additive effects on the amplitudes of SSVEPs elicited in early visual areas. In contrast, behavioral false alarms and feature-selective modulation of P3 amplitudes to targets and distractors were limited to the attended location. These results suggest that feature-selective attention produces an early, global facilitation of stimuli having the attended feature throughout the visual field, whereas the discrimination of target events takes place at a later stage of processing that is only applied to stimuli at the attended position.

Authors+Show Affiliations

Universität Leipzig, Leipzig, Germany.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19702461

Citation

Andersen, Søren K., et al. "Effects of Feature-selective and Spatial Attention at Different Stages of Visual Processing." Journal of Cognitive Neuroscience, vol. 23, no. 1, 2011, pp. 238-46.
Andersen SK, Fuchs S, Müller MM. Effects of feature-selective and spatial attention at different stages of visual processing. J Cogn Neurosci. 2011;23(1):238-46.
Andersen, S. K., Fuchs, S., & Müller, M. M. (2011). Effects of feature-selective and spatial attention at different stages of visual processing. Journal of Cognitive Neuroscience, 23(1), 238-46. https://doi.org/10.1162/jocn.2009.21328
Andersen SK, Fuchs S, Müller MM. Effects of Feature-selective and Spatial Attention at Different Stages of Visual Processing. J Cogn Neurosci. 2011;23(1):238-46. PubMed PMID: 19702461.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of feature-selective and spatial attention at different stages of visual processing. AU - Andersen,Søren K, AU - Fuchs,Sandra, AU - Müller,Matthias M, PY - 2009/8/26/entrez PY - 2009/8/26/pubmed PY - 2011/1/19/medline SP - 238 EP - 46 JF - Journal of cognitive neuroscience JO - J Cogn Neurosci VL - 23 IS - 1 N2 - We investigated mechanisms of concurrent attentional selection of location and color using electrophysiological measures in human subjects. Two completely overlapping random dot kinematograms (RDKs) of two different colors were presented on either side of a central fixation cross. On each trial, participants attended one of these four RDKs, defined by its specific combination of color and location, in order to detect coherent motion targets. Sustained attentional selection while monitoring for targets was measured by means of steady-state visual evoked potentials (SSVEPs) elicited by the frequency-tagged RDKs. Attentional selection of transient targets and distractors was assessed by behavioral responses and by recording event-related potentials to these stimuli. Spatial attention and attention to color had independent and largely additive effects on the amplitudes of SSVEPs elicited in early visual areas. In contrast, behavioral false alarms and feature-selective modulation of P3 amplitudes to targets and distractors were limited to the attended location. These results suggest that feature-selective attention produces an early, global facilitation of stimuli having the attended feature throughout the visual field, whereas the discrimination of target events takes place at a later stage of processing that is only applied to stimuli at the attended position. SN - 1530-8898 UR - https://www.unboundmedicine.com/medline/citation/19702461/Effects_of_feature_selective_and_spatial_attention_at_different_stages_of_visual_processing_ L2 - https://www.mitpressjournals.org/doi/10.1162/jocn.2009.21328?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -