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The Effects of Feature-Based Priming and Visual Working Memory on Oculomotor Capture.

Silvis JD, Belopolsky AV, Murris JW, Donk M - PLoS ONE (2015)

Bottom Line: The results showed that in both experiments the memorized color biased oculomotor selection.The results show that early oculomotor selection performance is not only affected by properties that are actively maintained in working memory but also by those previously memorized.Both working memory and feature priming can cause early biases in oculomotor selection.

View Article: PubMed Central - PubMed

Affiliation: Department of Cognitive Psychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.

ABSTRACT
Recently, it has been demonstrated that objects held in working memory can influence rapid oculomotor selection. This has been taken as evidence that perceptual salience can be modified by active working memory representations. The goal of the present study was to examine whether these results could also be caused by feature-based priming. In two experiments, participants were asked to saccade to a target line segment of a certain orientation that was presented together with a to-be-ignored distractor. Both objects were given a task-irrelevant color that varied per trial. In a secondary task, a color had to be memorized, and that color could either match the color of the target, match the color of the distractor, or it did not match the color of any of the objects in the search task. The memory task was completed either after the search task (Experiment 1), or before it (Experiment 2). The results showed that in both experiments the memorized color biased oculomotor selection. Eye movements were more frequently drawn towards objects that matched the memorized color, irrespective of whether the memory task was completed after (Experiment 1) or before (Experiment 2) the search task. This bias was particularly prevalent in short-latency saccades. The results show that early oculomotor selection performance is not only affected by properties that are actively maintained in working memory but also by those previously memorized. Both working memory and feature priming can cause early biases in oculomotor selection.

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Related in: MedlinePlus

The main results of Experiment 1.Illustrated are the mean proportions of correct responses in the search task separately per condition and latency bin. The error bars reflect the within-subject 95% confidence interval of the means calculated and corrected separately per bin [27, 28].
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pone.0142696.g002: The main results of Experiment 1.Illustrated are the mean proportions of correct responses in the search task separately per condition and latency bin. The error bars reflect the within-subject 95% confidence interval of the means calculated and corrected separately per bin [27, 28].

Mentions: A repeated-measures ANOVA was performed on the individual proportions of correct responses in the search task with Color Match (target-match, distractor-match, no-match) and Latency bin (1–4) as factors. The results showed a main effect of Color Match, F(2,26) = 15.77, p < .001, = .548, a main effect of Latency bin, F(3,39) = 5.61, p = .003, = .301, and a significant Color Match x Latency bin interaction, F(6,78) = 8.30, p < .001, = .390 (see Fig 2). The results of the ANOVA indicate that the effect of Color Match declines over time. Indeed, when comparing the target-match and distractor-match conditions, there is only a significant difference between the first two latency bins (respectively t(13) = 9.315, p < .001, and t(13) = 3.681, p = .003), and not between the last two (respectively t(13) = 1.872, p = .084, and t(13) = 1.825, p = .091.


The Effects of Feature-Based Priming and Visual Working Memory on Oculomotor Capture.

Silvis JD, Belopolsky AV, Murris JW, Donk M - PLoS ONE (2015)

The main results of Experiment 1.Illustrated are the mean proportions of correct responses in the search task separately per condition and latency bin. The error bars reflect the within-subject 95% confidence interval of the means calculated and corrected separately per bin [27, 28].
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4643993&req=5

pone.0142696.g002: The main results of Experiment 1.Illustrated are the mean proportions of correct responses in the search task separately per condition and latency bin. The error bars reflect the within-subject 95% confidence interval of the means calculated and corrected separately per bin [27, 28].
Mentions: A repeated-measures ANOVA was performed on the individual proportions of correct responses in the search task with Color Match (target-match, distractor-match, no-match) and Latency bin (1–4) as factors. The results showed a main effect of Color Match, F(2,26) = 15.77, p < .001, = .548, a main effect of Latency bin, F(3,39) = 5.61, p = .003, = .301, and a significant Color Match x Latency bin interaction, F(6,78) = 8.30, p < .001, = .390 (see Fig 2). The results of the ANOVA indicate that the effect of Color Match declines over time. Indeed, when comparing the target-match and distractor-match conditions, there is only a significant difference between the first two latency bins (respectively t(13) = 9.315, p < .001, and t(13) = 3.681, p = .003), and not between the last two (respectively t(13) = 1.872, p = .084, and t(13) = 1.825, p = .091.

Bottom Line: The results showed that in both experiments the memorized color biased oculomotor selection.The results show that early oculomotor selection performance is not only affected by properties that are actively maintained in working memory but also by those previously memorized.Both working memory and feature priming can cause early biases in oculomotor selection.

View Article: PubMed Central - PubMed

Affiliation: Department of Cognitive Psychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.

ABSTRACT
Recently, it has been demonstrated that objects held in working memory can influence rapid oculomotor selection. This has been taken as evidence that perceptual salience can be modified by active working memory representations. The goal of the present study was to examine whether these results could also be caused by feature-based priming. In two experiments, participants were asked to saccade to a target line segment of a certain orientation that was presented together with a to-be-ignored distractor. Both objects were given a task-irrelevant color that varied per trial. In a secondary task, a color had to be memorized, and that color could either match the color of the target, match the color of the distractor, or it did not match the color of any of the objects in the search task. The memory task was completed either after the search task (Experiment 1), or before it (Experiment 2). The results showed that in both experiments the memorized color biased oculomotor selection. Eye movements were more frequently drawn towards objects that matched the memorized color, irrespective of whether the memory task was completed after (Experiment 1) or before (Experiment 2) the search task. This bias was particularly prevalent in short-latency saccades. The results show that early oculomotor selection performance is not only affected by properties that are actively maintained in working memory but also by those previously memorized. Both working memory and feature priming can cause early biases in oculomotor selection.

Show MeSH
Related in: MedlinePlus