@article{6087, abstract = {{Visual backward masking is frequently used to study the temporal dynamics of visual perception. These dynamics may include the temporal features of conscious percepts, as suggested, for instance, by the asynchronous-updating model (Neumann, 1982) and perceptual-retouch theory (Bachmann, 1994). These models predict that the perceptual latency of a visual backward mask is shorter than that of a like reference stimulus that was not preceded by a masked stimulus. The prediction has been confirmed by studies using temporal-order judgments: For certain asynchronies between mask and reference stimulus, temporal-order reversals are quite frequent (e.g. Scharlau, & Neumann, 2003a). However, it may be argued that these reversals were due to a response bias in favour of the mask rather than true temporal-perceptual effects. I introduce two measures for assessing latency effects that (1) are not prone to such a response bias, (2) allow to quantify the latency gain, and (3) extend the perceptual e}}, author = {{Scharlau, Ingrid}}, issn = {{1895-1171}}, journal = {{Advances in Cognitive Psychology}}, keywords = {{temporal processes, prime mask interaction, perceptual consequences, masked information, visual backward masking, visual perception, Temporal Lobe, Visual Masking, Visual Perception, Consequence}}, number = {{1-2}}, pages = {{241 -- 255}}, title = {{{Temporal processes in prime-mask interaction: Assessing perceptual consequences of masked information.}}}, volume = {{3}}, year = {{2007}}, } @article{6070, abstract = {{The Fehrer-Raab effect (simple reaction time is unaffected by metacontrast masking of the test stimulus) seems to imply that a stimulus can trigger a voluntary reaction without reaching a conscious representation. However, it is also possible that the mask triggers the reaction, and that the masked test stimulus causes a focussing of attention from which processing of the mask profits, thus reaching conscious representation earlier. This is predicted by the Weather Station Model of visual masking. Three experiments tested this explanation. Experiment 1 showed that the masked test stimulus caused a temporal shift of the mask. Experiment 2 showed that the reaction in the Fehrer-Raab effect was not exclusively triggered by a conscious representation of the test stimulus: the mask was involved in evoking the reaction. Experiment 3 again revealed a temporal shift of the mask. However, the shift was only about half as large as the Fehrer-Raab effect. The psychometric functions suggested tha}}, author = {{Neumann, Odmar and Scharlau, Ingrid}}, issn = {{0340-0727}}, journal = {{Psychological Research}}, keywords = {{Fehrer-Raab effect, Weather Station Model, visual backward masking, reaction time, metacontrast masking, conscious representation, Cognition, Humans, Perceptual Masking, Pilot Projects, Psychology, Experimental, Psychometrics, Reaction Time, Visual Perception, Models, Reaction Time, Visual Contrast, Visual Masking}}, number = {{6}}, pages = {{667 -- 677}}, title = {{{Experiments on the Fehrer-Raab effect and the 'Weather Station Model' of visual backward masking.}}}, volume = {{71}}, year = {{2007}}, } @article{6093, abstract = {{The U-shaped metacontrast function may result from the superimposition of two monotonic components which reflect the effects of mechanisms similar to the peripheral and central processes suggested for backward pattern masking by Turvey (Psychol Rev 80:1-52, 1973). In an experiment using the disc-ring paradigm, it was demonstrated that the decreasing and increasing branches of the metacontrast function are differently affected by the exposure duration of the mask and a task-irrelevant stimulus (distractor) appearing in the contralateral visual hemifield. The phenomenal representation of masking is different for the two parts of the curve. It is suggested that masking in the second part of the masking function, but not in the first, is related to the control of visual attention. (PsycINFO Database Record (c) 2016 APA, all rights reserved)}}, author = {{Neumann, Odmar and Scharlau, Ingrid}}, issn = {{0340-0727}}, journal = {{Psychological Research}}, keywords = {{visual attention, metacontrast, backward pattern masking, monotonic components superimposition, Attention, Contrast Sensitivity, Humans, Judgment, Perceptual Masking, Visual Perception, Metacognition, Visual Contrast, Visual Attention, Visual Masking}}, number = {{6}}, pages = {{626 -- 633}}, title = {{{Visual attention and the mechanism of metacontrast.}}}, volume = {{71}}, year = {{2007}}, } @article{6079, abstract = {{The present paper reviews recent research on perceptual latency priming (PLP). PLP is the relative latency advantage--earlier perception--of a visual stimulus that is preceded by another, masked stimulus at its location. The first stimulus attracts attention which accelerates perception of the second stimulus. This facilitation arises even if the first stimulus is visually backward-masked by the second one. The paper summarises research on temporal and spatial properties of PLP and the question whether intentions mediate shifts of attention to external events. Possible sources of PLP besides visuo-spatial attention are discussed. Finally, I give a review of feedforward and reentrant models of PLP and compare them to the empirical evidence. (PsycINFO Database Record (c) 2016 APA, all rights reserved)}}, author = {{Scharlau, Ingrid}}, issn = {{0340-0727}}, journal = {{Psychological Research}}, keywords = {{perceptual latency priming, attentional facilitation, visuospatial attention, visual backward masking, prior entry, Attention, Humans, Judgment, Reaction Time, Space Perception, Attention, Priming, Response Latency, Visual Masking, Visuospatial Ability}}, number = {{6}}, pages = {{678 -- 686}}, title = {{{Perceptual latency priming: A measure of attentional facilitation.}}}, volume = {{71}}, year = {{2007}}, } @article{6092, abstract = {{The topic of the present edition is visual masking paradigms-as powerful tool for demonstrating the processing of nonconscious visual information. In the present issue one article presents an improved methodology for disentangling perceptual and temporal influences in markers. Another paper demonstrates that preemptive control, or DPS, mediates the allocation of attention towards possible targets. One of the contributions specify conditions under which DPS-like effects are found as opposed to conditions under which stimulus-driven effects are found. A study of two illusions which the prime may cause in a trailing stimulus, a temporal pre-dating of the mask and a perception of motion in later stimuli adjacent to the prime is presented in the issue. Another contribution addresses how the percept of a stimulus is altered by a temporal and spatial interplay of two backward masks or of one forward mask and two backwards masks. (PsycINFO Database Record (c) 2016 APA, all rights reserved)}}, author = {{Scharlau, Ingrid and Ansorge, Ulrich and Breitmeyer, Bruno G.}}, issn = {{1895-1171}}, journal = {{Advances in Cognitive Psychology}}, keywords = {{visual masking, visual information, attention, stimulus-driven effects, motion perception, Attention, Illusions (Perception), Motion Perception, Visual Masking}}, number = {{1}}, pages = {{1 -- 5}}, title = {{{Trends and styles in visual masking.}}}, volume = {{2}}, year = {{2006}}, } @article{6073, abstract = {{The paper is concerned with two models of early visual processing which predict that priming of a visual mask by a preceding masked stimulus speeds up conscious perception of the mask (perceptual latency priming). One model ascribes this speed-up to facilitation by visuo-spatial attention [Scharlau, I., & Neumann, O. (2003a). Perceptual latency priming by masked and unmasked stimuli: Evidence for an attentional explanation. Psychological Research 67, 184-197], the other attributes it to nonspecific upgrading mediated by retino-thalamic and thalamo-cortical pathways [Bachmann, T. (1994). Psychophysiology of visual masking: The fine structure of conscious experience. Commack, NY: Nova Science Publishers]. The models make different predictions about the time course of perceptual latency priming. Four experiments test these predictions. The results provide more support for the attentional than for the upgrading model. The experiments further demonstrate that testing latency facilitation w}}, author = {{Scharlau, Ingrid and Ansorge, Ulrich and Horstmann, Gernot}}, issn = {{0001-6918}}, journal = {{Acta Psychologica}}, keywords = {{latency facilitation, temporal order judgments, visual processing, priming, conscious perception, visual mask, Adult, Attention, Female, Humans, Judgment, Male, Perceptual Masking, Reaction Time, Space Perception, Time Perception, Visual Perception, Consciousness States, Judgment, Priming, Visual Masking, Temporal Order (Judgment)}}, number = {{2}}, pages = {{129 -- 159}}, title = {{{Latency facilitation in temporal-order judgments: Time course of facilitation as a function of judgment type.}}}, volume = {{122}}, year = {{2006}}, } @article{6086, abstract = {{Visual stimuli (primes) reduce the perceptual latency of a target appearing at the same location (perceptual latency priming, PLP). Three experiments assessed the time course of PLP by masked and, in Experiment 3, unmasked primes. Experiments 1 (N=11; mean age 26.9) and 2 (N=12; mean age 25.6) investigated the temporal parameters that determine the size of priming. Stimulus onset asynchrony was found to exert the main influence accompanied by a small effect of prime duration. Experiment 3 (N=19; mean age 27.7) used a large range of priming onset asynchronies. We suggest to explain PLP by the Asynchronous Updating Model which relates it to the asynchrony of 2 central coding processes, preattentive coding of basic visual features and attentional orienting as a prerequisite for perceptual judgments and conscious perception. (PsycINFO Database Record (c) 2017 APA, all rights reserved)}}, author = {{Scharlau, Ingrid and Neumann, Odmar}}, issn = {{0001-6918}}, journal = {{Acta Psychologica}}, keywords = {{perceptual latency priming, temporal parameters, Asynchronous Updating Model, time course, stimulus onset asynchrony, visual masking, attention, Adult, Attention, Female, Humans, Male, Perceptual Masking, Reaction Time, Time Perception, Visual Perception, Attention, Priming, Stimulus Onset, Visual Masking, Visual Perception, Models, Time}}, number = {{2}}, pages = {{185 -- 203}}, title = {{{Temporal parameters and time course of perceptual latency priming.}}}, volume = {{113}}, year = {{2003}}, }