Interactions between spatial attention and global/local feature selection: An ERP study

S. Han, W. Liu, E. W. Yund, David L Woods

Research output: Contribution to journalArticlepeer-review

54 Scopus citations

Abstract

The present study examined the interaction between spatial attention and global/local feature processing of visual hierarchical stimuli. Event-related brain potentials (ERPs) were recorded from subjects who detected global or local targets at attended locations while ignoring those at unattended locations. Spatial attention produced enhanced occipital P1 and N1 waves in both global and local conditions. Selection of local features enhanced posterior P1, N1 and N2 waves relative to selection of global features. However, the modulations of the P1 and N2 by global/local feature selection were stronger when spatial attention was directed to the left than the right visual fields. The results suggest neurophysiological bases for interactions between spatial attention and hierarchical analysis at multiple stages of visual processing. (C) 2000 Lippincott Williams and Wilkins.

Original languageEnglish (US)
Pages (from-to)2753-2758
Number of pages6
JournalNeuroReport
Volume11
Issue number12
StatePublished - Aug 21 2000

Keywords

  • Event-related potentials
  • Hierarchical stimulus
  • Spatial attention

ASJC Scopus subject areas

  • Neuroscience(all)

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