Attention Operating Characteristics in a Location-Cuing Task

Optimal attentional allocation in the presence of capacity constraints in uncued and cued visual search

The vision sciences literature contains a large diversity of experimental and theoretical approaches to the study of visual attention. We argue that this diversity arises, at least in part, from the field's inability to unify differing theoretical perspectives. In particular, the field has been hindered by a lack of a principled formal framework for simultaneously thinking about both optimal attentional processing and capacity-limited attentional processing, where capacity is limited in a general, task-independent manner. Here, we supply such a framework based on rate-distortion theory (RDT) and optimal lossy compression. Our approach defines Bayes-optimal performance when an upper limit on information processing rate is imposed. In this article, we compare Bayesian and RDT accounts in both uncued and cued visual search tasks. We start by highlighting a typical shortcoming of unlimited-capacity Bayesian models that is not shared by RDT models, namely, that they often overestimate task performance when information-processing demands are increased. Next, we reexamine data from two cued-search experiments that have previously been modeled as the result of unlimited-capacity Bayesian inference and demonstrate that they can just as easily be explained as the result of optimal lossy compression. To model cued visual search, we introduce the concept of a "conditional communication channel." This simple extension generalizes the lossy-compression framework such that it can, in principle, predict optimal attentional-shift behavior in any kind of perceptual task, even when inputs to the model are raw sensory data such as image pixels. To demonstrate this idea's viability, we compare our idealized model of cued search, which operates on a simplified abstraction of the stimulus, to a deep neural network version that performs approximately optimal lossy compression on the real (pixel-level) experimental stimuli.

Visual perception in fencing: do the eye movements of fencers represent their information pickup?

The present study examined whether results of athletes' eye movements while they observe fencing attacks reflect their actual information pickup by comparing these results with others gained with temporal and spatial occlusion and cuing techniques. Fifteen top-ranking expert fencers, 15 advanced fencers, and 32 sport students predicted the target region of 405 fencing attacks on a computer monitor. Results of eye movement recordings showed a stronger foveal fixation on the opponent's trunk and weapon in the two fencer groups. Top-ranking expert fencers fixated particularly on the upper trunk. This matched their performance decrements in the spatial occlusion condition. However, when the upper trunk was occluded, participants also shifted eye movements to neighboring body regions. Adding cues to the video material had no positive effects on prediction performance. We conclude that gaze behavior does not necessarily represent information pickup, but that studies applying the spatial occlusion paradigm should also register eye movements to avoid underestimating the information contributed by occluded regions.

Das Hinweisreizparadigma - sportpsychologische Anwendungen im Überblick

Zusammenfassung. Das Hinweisreizparadigma ist in der Psychologie seit Ende der 70er-Jahre vielfach genutzt worden, um selektive visuelle Aufmerksamkeit hinsichtlich verschiedener Aspekte zu untersuchen. Seit Ende der 80er-Jahre wird dieses Paradigma auch aus sportpsychologischer Perspektive angewandt, um z. B. Athleten und Nicht-Athleten oder Sportler unterschiedlicher Sportarten hinsichtlich der Effizienz der Aufmerksamkeitsallokation auf unterschiedliche Reize zu vergleichen. Bisher haben jedoch nur wenige sportpsychologische Studien, die in deutsch- und englischsprachigen Zeitschriften veröffentlicht wurden, das Hinweisreizparadigma genutzt. In diesem Überblicksbeitrag werden diese Studien einerseits sowohl methodisch als auch bez. ihrer Ergebnisse resümiert. Andererseits wird diskutiert, weshalb das Hinweisreizparadigma im Vergleich zum Eye-tracking Paradigma vernachlässigt wurde. Zukünftige Anwendungspotenziale des Hinweisreizparadigmas für die sportpsychologische Forschung werden abschließend skizziert.

Environmental dependence of behavioral control mechanisms: effects of alcohol and information processing demands

Studies show that alcohol increases a drinker's reliance on the environmental context for the maintenance of inhibitory and activational responding. The author of the present study examined additive effects of alcohol and cognitive load on the cue dependency of inhibitory and activational mechanisms of control. Adults received 0.0 g/kg, 0.45 g/kg, and 0.65 g/kg alcohol and performed a cued go/no-go task that presented simple and complex go and no-go stimuli. Results showed that cue dependency of response inhibition increased as a function of dose, and this effect was similar across low and high cognitive load conditions. These findings are consistent with a capacity limitation account of alcohol impairment that could involve central or output stages of information processing.

Goal-driven modulation of stimulus-driven attentional capture in multiple-cue displays

Six location-cuing experiments were conducted to examine the goal-driven control of attentional capture in multiple-cue displays. In most of the experiments, the cue display consisted of the simultaneous presentation of a red direct cue that was highly predictive of the target location (the unique cue) and three gray direct cues (the standard cues) that were not predictive of the location. The results indicated that although target responses were faster at all cued locations relative to uncued locations, they were significantly faster at the unique-cue location than at the standard-cue locations. Other results suggest that the faster responses produced by direct cues may be associated with two different components: an attention-related component that can be modulated by goal-driven factors and a nonattentional component that occurs in parallel at multiple direct-cue locations and is minimally affected by the same goal-driven factors.