The Role of Attention in the Recognition of Peripheral Stimuli in Single and Dual Tasks.

Autor: Bondarko, V. M., Danilova, M. V., Solnushkin, S. D., Chikhman, V. N.
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Zdroj: Neuroscience & Behavioral Physiology; May2022, Vol. 52 Issue 4, p541-552, 12p
Abstrakt: Psychophysical experiments were carried out to investigate the influences of attention on the recognition of peripheral images in the presence of distractors on performance of single and dual tasks. Tests consisted of low-contrast Landolt rings of size 1.5° with different orientations, presented for 40 msec with an eccentricity of 13.2° to the right and left of the fixation point. Distractors consisted of similar Landolt rings or whole rings without a gap. Distractors were always positioned between the test and the fixation point. The distance between the centers of the tests and the distractors varied from 2.2° to 13.2°. The single task (recognition of the test only) and the dual task (recognition of the test and distractor) were performed by the same observer. Degradation of recognition was seen at all distances to the distractor in both tasks, this being greater for Landolt ring distractors. Minor degradation on performance of the dual task, as compared with the single, provided evidence that the distribution of attention was identical at all stimulus presentation positions in both tasks, while nonrandom errors and the greater influence of the distractor of the same shape confirmed the theory of Treisman and Gelade [1980] that features in the attention zone are integrated. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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