Perception and Psychophysics

Covers all areas of research in sensory processes, perception, attention, and psychophysics. Includes reports on experimental work, reviews, and issue commentary important to researchers.

Articles from Vol. 69, No. 3, April

A Comparison of Adaptive Psychometric Procedures Based on the Theory of Optimal Experiments and Bayesian Techniques: Implications for Cochlear Implant Testing
Numerous previous studies have focused on the development of quick and efficient adaptive psychometric procedures. In psychophysics, there is often a model of the psychometric function supported by previous studies for the task of interest. The theory...
An Examination of Semantic Radical Combinability Effects with Lateralized Cues in Chinese Character Recognition
Auclair and Siéroff (2002) examined lateralized cuing effects in the identification of centrally presented letter strings and reported no cuing effects for short word stimuli. They argued for a redistribution of attention over the entire word for short...
Attentional Capture in Serial Audiovisual Search Tasks
The phenomenon of attentional capture has typically been studied in spatial search tasks. Dalton and Lavie (2004) recently demonstrated that auditory attention can also be captured by a singleton item in a rapidly presented tone sequence. In the experiments...
Evidence against Signal Enhancement as a Mechanism of Direct Selection by Color
Two of the possible mechanisms that have been put forward to explain precuing effects are signal enhancement and uncertainty reduction. Signal enhancement leads to processing advantages for valid information because the signal at the known input channel...
Evolved Navigation Theory and the Descent Illusion
Researchers often assume that height perception results from all of the same mechanisms as does other distance perception (Avraamides, Loomis, Klatzky, & Golledge, 2004; Foley, Ribeiro-Filho, & Da Silva, 2004; Wu, Ooi, & He, 2004). Evolved...
Eye Movements as Direct Tests of the GO Model for the Missing-Letter Effect
When asked to detect target letters while reading a text, participants miss more letters in frequently occurring function words than in less frequent content words. To account for this pattern of results, known as the missing-letter effect, Greenberg,...
Familiar Shapes Attract Attention in Figure-Ground Displays
We report five experiments that explore the effect of figure-ground factors on attention. We hypothesized that figural cues, such as familiar shape, would draw attention to the figural side in an attentional cuing task using bipartite figure-ground displays....
Hemispheric Differences for Global/local Processing in Divided Attention Tasks: Further Evidence for the Integration Theory
Functional hemispheric asymmetries with respect to global/local processing have been observed more reliably in divided-attention than in selective-attention tasks. This difference has been accounted for by assuming that the hemispheres operate differently...
Matching Illumination of Solid Objects
The appearance of objects is determined by their surface reflectance and roughness and by the light field. Conversely, human observers might derive properties of the light field from the appearance of objects. The inverse problem has no unique solution,...
Nonspatial Attributes of Stimuli Can Influence Spatial Limitations of Attentional Control
A wide variety of psychophysical and neurophysiological research suggests that when stimuli are very close together, they cannot be attended separately. As a consequence, they cannot be represented as individual items with specific feature information...
Object and Spatial Representations in the Corner Enhancement Effect
Cole, Gellatly, and Blurton (2001) have shown that targets presented adjacent to geometric corners are detected more efficiently than targets presented adjacent to straight edges. In six experiments, we examined how this corner enhancement effect is...
Processing Resources in Timing and Sequencing Tasks
Subjects performed timing and sequencing tasks under separate (single-task) and concurrent (dual-task) conditions in two experiments. The timing task required the subjects to generate a series of 5-sec temporal productions. The sequencing task in Experiment...
Searching for an O in an Array of Cs: Eye Movements Track Moment-to-Moment Processing in Visual Search
We examined how closely the underlying cognitive processing in a visual search task guides eye movements by comparing two different search tasks. In the extended search task, participants searched for an O in eight clusters of Landolt Cs with varying...
The Effect of a Flashing Visual Stimulus on the Auditory Continuity Illusion
The effect of a visual stimulus on the auditory continuity illusion was examined. Observers judged whether a tone that was repeatedly alternated with a band-pass noise was continuous or discontinuous. In most observers, a transient visual stimulus that...
The Effect of Saccades on Number Processing
Recent research has shown that saccadic eye movements interfere with dorsal-stream tasks such as judgments of object orientation, but not with ventral-stream tasks such as object recognition. Because saccade programming and execution also rely on the...
The Reconfiguration of Task Set Has No Effect on the Efficiency of Feature Search
In this study, we investigated whether or not the reconfiguration of a set task could modulate the efficiency of feature search. In Experiment 1, target set size was manipulated. The results revealed that enumerating targets defined by color yields a...
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