Exact(1)
Riser Detection letter strings were constructed by scrambling the letters used in the Fact-Learning Task, and contained the same number of spaces as the text strings in the Fact-Learning Task.
Similar(59)
On detection of the target letter, they were asked to shift their attention to the numeral stream and report the four first numerals they perceived as concomitant or directly following the detected letter.
In local-letter detection, the global letter interferes, but not vice versa.
Indeed, we found that in MISS trials, the percentage of detection of letters flashed inside the target was not different from the percentage of detection in distractors (one-way RM ANOVA, p = 0.59, F = 0.65; 20.10±11.01% (mean±SD), and 19.83±9.19%, 17.06±4.94% and 19.35±7.37% for level 3, 2 and 1 distractors, respectively).
For the example illustrated in Figure 3, (5) Genotyping : we formulate the problem of variation detection from letter- and color-space sequencing as the problem of finding the maximum likelihood state for each genotype's position, given the emissions generated by the HMM.
In order to determine whether the effect of orientation contrast and spatial location on letter detection probability was specific to CVS, we analyzed letter detection performance in the control task A, where subjects were only asked to report letters without performing the CVS task.
As far as the effect of spatial location on attentional allocation was concerned, we found a significant effect of the item position in the display on both the target (F = 6.32, p<0.0001) and letter detection (F = 18.3, p<0.0001) rates; namely a higher detection rate was observed for CVS items and letters located near the horizontal meridian (Figure 7).
In addition to the effect on letter detection, we found that the local orientation contrast also influenced the target detection probability (RM ANOVA F = 5.26, p = 0.001).
In contrast, the significant effect of position for the letter detection performed alone was expected since, if attentional allocation probability depends on spatial location, it will affect stimulus detection irrespective of the nature of the stimulus to be detected.
An experiment with N = 40 university students investigated the impact of social observation on cardiovascular reactivity during performance on a computer-based letter detection task.
We found that the letter detection rate increased with the onset time (F = 2.88, p = 0.009), except for the last onset time (765 810 ms), which was associated with a decreased letter detection rate.
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