Feature Analysis in Early Vision

Treisman, Anne; Gormican, Stephen

doi:10.1093/acprof:osobl/9780199734337.003.0013

Cited by 5 publications

(3 citation statements)

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“…A third possibility is that only large, but not small, size singleton cues capture attention in a stimulus‐driven fashion due to their higher signal strength (Proulx & Egeth, 2008). In this case, task‐set contingent capture should be observed only for small cue arrays (see also Treisman & Gormican, 1988, for asymmetries between search for large vs. small target singletons).…”

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Attentional capture by size singletons is determined by top‐down search goals

Kiss

Eimer

2010

Psychophysiology

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The question whether attentional capture by salient visual stimuli is driven by bottom-up salience or is contingent on top-down task set is still under dispute. We show that the ability of size singletons to capture attention is determined by current search goals. Participants searched for small or large target singletons among medium-size distractors. Attentional capture by small or large size singleton cues that preceded target search displays was reflected by spatial cueing effects and N2pc components. These effects were observed only when these cues matched the current target-defining feature, but not for physically identical but mismatching cues. Results demonstrate that attentional capture by size singletons is not driven by bottom-up salience, but is controlled by feature-specific task settings.

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confidence: 99%

Attentional capture by size singletons is determined by top‐down search goals

Kiss

Eimer

2010

Psychophysiology

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“…However, the neural processes underlying spontaneous perceptual reversals remain elusive (for reviews, see Blake & Logothetis, 2002; Long & Toppino, 2004). A better understanding of how the perceptual system changes spontaneously between two different representations of the same visual object could also shed light on another more general issue, the binding problem: How, in principle, does the brain integrate separately analyzed features to a coherent object representation (e.g., Livingstone & Hubel, 1988; Treisman & Gormican, 1988; Uhlhaas et al, 2009)? In the last two decades binding type problems have also been discussed in connection with the grouping of letters of a word or words within a sentence, with the match of memory contents and perceptual contents, with sensory‐motor coupling, the dynamic integration of distant neural subsystems, and with learning and consciousness (e.g., Cosmelli et al, 2004; Herrmann, Munk, & Engel, 2004; Revonsuo, 1999; Uhlhaas et al, 2009).…”

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Ambiguous figures and binding: EEG frequency modulations during multistable perception

Ehm

Bach²,

Kornmeier

2010

Psychophysiology

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Ambiguous figures induce sudden transitions between rivaling percepts. We investigated electroencephalogram frequency modulations of accompanying change-related de- and rebinding processes. Presenting the stimuli discontinously, we synchronized perceptual reversals with stimulus onset, which served as a time reference for averaging. The resultant gain in temporal resolution revealed a sequence of time-frequency correlates of the reversal process. Most conspicuous was a transient right-hemispheric gamma modulation preceding endogenous reversals by at least 200 ms. No such modulation occurred with exogenously induced reversals of unambiguous stimulus variants. Post-onset components were delayed for ambiguous compared to unambiguous stimuli. The time course of oscillatory activity differed in several respects from predictions based on binding-related hypotheses. The gamma modulation preceding endogenous reversals may indicate an unstable brain state, ready to switch.

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“…The marking of the corresponding parts could be represented by a synchronous oscillation of the cognitive entities [9,20]. Only when the attention is focused on certain parts are they bound to a whole object [6,19,22].…”

Section: Visual Attention and The Human Brainmentioning

confidence: 99%

The Role of Attention in the Context of Associative Memory

Wichert

2010

Cogn Comput

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We model the mechanism of the retrieval of associations from the associative memory during visual scene analysis. During the analysis of the visual scene, the retrieval phase of the associative memory is divided into two stages: the attention stage and the binding stage. In the attention stage, an attention window selects patterns representing objects for further access. In the binding stage, the selected patterns form an address vector. The behavior of the model is demonstrated by theoretical analysis and empirical experiment.

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Feature Analysis in Early Vision

Cited by 5 publications

References 0 publications

Attentional capture by size singletons is determined by top‐down search goals

Attentional capture by size singletons is determined by top‐down search goals

Ambiguous figures and binding: EEG frequency modulations during multistable perception

The Role of Attention in the Context of Associative Memory

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