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Spotting the difference between pairs of nearly identical Perlin images: Influences of presentation formats

We investigated human performance in speed and precision of detecting a deviating visual target embedded in one of two otherwise identical non-figurative Perlin-noise images (i.e. a spot-the-difference task). The image-pairs were presented in four different presentation formats: spatially separated...

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Detalles Bibliográficos
Autores principales: Poom, Leo, Fällmar, David
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8880654/
https://www.ncbi.nlm.nih.gov/pubmed/35213676
http://dx.doi.org/10.1371/journal.pone.0264621
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author Poom, Leo
Fällmar, David
author_facet Poom, Leo
Fällmar, David
author_sort Poom, Leo
collection PubMed
description We investigated human performance in speed and precision of detecting a deviating visual target embedded in one of two otherwise identical non-figurative Perlin-noise images (i.e. a spot-the-difference task). The image-pairs were presented in four different presentation formats: spatially separated in horizontal or vertical direction while simultaneously presented, or sequentially separated on the same location with a brief delay or without any delay. In the two spatial conditions failure to detect the target within 30 sec (change blindness) occurred in about 6–7% of the trials, and with the brief delay 2.4% of the trials. Fast error-free detection (i.e. pop out) was obtained using the sequential format with no delay. Average detection time when target was detected was about 9 sec for the two spatial formats. Detection time was faster, about 6 sec, for the brief delay condition. In trials where detection was reported, the precision of locating the target was equal in the horizontal and brief delay conditions, and better than in the vertical condition. Misses obtained in the horizontal and brief delay conditions were also more strongly correlated than correlations between misses in the vertical and horizontal, and between the vertical and brief delay conditions. Some individuals’ performances when comparing images in the vertical direction were at chance level. This suggests influences of known poorer precision when making saccades in the vertical compared to horizontal direction. The results may have applications for radiologists since the stimuli and task is similar to radiologists’ task when detecting deviations between radiological images.
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spelling pubmed-88806542022-02-26 Spotting the difference between pairs of nearly identical Perlin images: Influences of presentation formats Poom, Leo Fällmar, David PLoS One Research Article We investigated human performance in speed and precision of detecting a deviating visual target embedded in one of two otherwise identical non-figurative Perlin-noise images (i.e. a spot-the-difference task). The image-pairs were presented in four different presentation formats: spatially separated in horizontal or vertical direction while simultaneously presented, or sequentially separated on the same location with a brief delay or without any delay. In the two spatial conditions failure to detect the target within 30 sec (change blindness) occurred in about 6–7% of the trials, and with the brief delay 2.4% of the trials. Fast error-free detection (i.e. pop out) was obtained using the sequential format with no delay. Average detection time when target was detected was about 9 sec for the two spatial formats. Detection time was faster, about 6 sec, for the brief delay condition. In trials where detection was reported, the precision of locating the target was equal in the horizontal and brief delay conditions, and better than in the vertical condition. Misses obtained in the horizontal and brief delay conditions were also more strongly correlated than correlations between misses in the vertical and horizontal, and between the vertical and brief delay conditions. Some individuals’ performances when comparing images in the vertical direction were at chance level. This suggests influences of known poorer precision when making saccades in the vertical compared to horizontal direction. The results may have applications for radiologists since the stimuli and task is similar to radiologists’ task when detecting deviations between radiological images. Public Library of Science 2022-02-25 /pmc/articles/PMC8880654/ /pubmed/35213676 http://dx.doi.org/10.1371/journal.pone.0264621 Text en © 2022 Poom, Fällmar https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Poom, Leo
Fällmar, David
Spotting the difference between pairs of nearly identical Perlin images: Influences of presentation formats
title Spotting the difference between pairs of nearly identical Perlin images: Influences of presentation formats
title_full Spotting the difference between pairs of nearly identical Perlin images: Influences of presentation formats
title_fullStr Spotting the difference between pairs of nearly identical Perlin images: Influences of presentation formats
title_full_unstemmed Spotting the difference between pairs of nearly identical Perlin images: Influences of presentation formats
title_short Spotting the difference between pairs of nearly identical Perlin images: Influences of presentation formats
title_sort spotting the difference between pairs of nearly identical perlin images: influences of presentation formats
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8880654/
https://www.ncbi.nlm.nih.gov/pubmed/35213676
http://dx.doi.org/10.1371/journal.pone.0264621
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