On the role of response conflicts and stimulus position for hemispheric differences in global/local processing: an ERP study

  title={On the role of response conflicts and stimulus position for hemispheric differences in global/local processing: an ERP study},
  author={Gregor Volberg and Ronald H{\"u}bner},

Figures from this paper

Deconfounding the effects of congruency and task difficulty on hemispheric differences in global/local processing.

The results support the alternative hypothesis that different representations are needed for the response selection for nonconflicting and conflicting stimuli, and that the hemispheres differ only with respect to the latter.

Hemispheric differences for the integration of stimulus levels and their contents: Evidence from bilateral presentations

The results support the idea that the hemispheres differ in their capacity for integrating level and form, and support the hypothesis that response conflict requires integration of the letters and their respective levels.

Switching between global and local levels: the level repetition effect and its hemispheric asymmetry

Data supports the notion of the existence of multiple mechanisms underlying level-switch effects, and provides evidence for a RH advantage in inhibiting the non-target level.

The effect of element spacing on hemispheric asymmetries for global/local processing.

The results show that element spacing can have an effect on VF-effects, and are interpreted in the sense that narrowly spaced elements are perceived as texture, which always leads to an elaborate mental representation of the stimulus that differs between the hemispheres.

Hemispheric differences for global/local processing in divided attention tasks: Further evidence for the integration theory

The alternative hypothesis was tested that the interference between the global and local levels is increased under divided attention, and that this makes it necessary to base response selection on a more elaborated mental stimulus representation in which the levels and their content are integrated.

The Effect of Element Spacing on Hemispheric Asymmetries for G loba I / Loca I Processi ng

In several studies with hierarchical stimuli it has been shown that the left and the right hemispheres are specialized for the processing of local and global infonnation, respectively. However,

Asynchronous presentation of global and local information reveals effects of attention on brain electrical activity specific to each level

A method that allows unveiling of global and local letters at distinct times, enabling estimation of separate ERPs related to each level within hierarchically organized Navon figures is used, resolving the ambiguity of traditional designs.

EEG alpha oscillations in the preparation for global and local processing predict behavioral performance

It is interpreted that the left and the right parietal cortex exert top–down control over hierarchical processing by inhibiting stimulus representations in one hemisphere.



The effect of response competition on functional hemispheric asymmetries for global/local processing

It turned out that VF effects occurred only for conflicting stimuli and only when there was at least a certain amount of absolute interference, whereas variations of the relative interference had no effect in this respect, suggesting that there is a qualitative relationship between interference and VF effect.

The influence of response competition on cerebral asymmetries for processing hierarchical stimuli revealed by ERP recordings

Electrophysiological data underline the idea that hemispheric differences are more likely to show up when a more elaborated stimulus representation is needed for triggering the response, that is, when a response conflict has to be resolved.

The Order of Global- and Local-Level Information Processing: Electrophysiological Evidence for Parallel Perceptual Processes

ERP analysis strongly supported the assumption that separate perceptual systems process global- and local-level information in parallel with a left/right hemispheric asymmetry of local/global processing.

Cerebral Asymmetry of the “Top-Down” Allocation of Attention to Global and Local Features

Electrophysiological results provided an asymmetrical neural basis for the "top-down" allocation of attention to global and local features and revealed the contribution of the temporal-parietal cortex to this attentional mechanism.

The effect of spatial frequency on global precedence and hemispheric differences

  • R. Hübner
  • Psychology
    Perception & psychophysics
  • 1997
It was concluded that both sensory and attentional or control mechanisms were responsible for global precedence and that the hemispheres differed with respect to the latter.

Electrophysiological evidence of a perceptual precedence of global vs. local visual information.

An ERP study of the global precedence effect: the role of spatial frequency

Neural Mechanisms of Global and Local Processing: A Combined PET and ERP Study

Data indicate that early sensory inputs are not modulated to gate global versus local information differentially into the two hemi- spheres, and supports models proposing that spatial frequency analysis is only asymmetric at higher stages of perceptual processing and not at the earliest stages of visual cortical analysis.