Revealing the Radial Effect on Orientation Discrimination by Manual Reaction Time
It has been shown that the sensitivity and accuracy of orientation perception in the periphery is significantly better when the orientations are radial with respect to the fixation point than when they are tangential. However, since perception and action may be dissociated, it is unclear whether the...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2017-11-01
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| Series: | Frontiers in Neuroscience |
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| Online Access: | http://journal.frontiersin.org/article/10.3389/fnins.2017.00638/full |
| _version_ | 1829495989152514048 |
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| author | Lixin Liang Yang Zhou Yang Zhou Mingsha Zhang Yujun Pan |
| author_facet | Lixin Liang Yang Zhou Yang Zhou Mingsha Zhang Yujun Pan |
| author_sort | Lixin Liang |
| collection | DOAJ |
| description | It has been shown that the sensitivity and accuracy of orientation perception in the periphery is significantly better when the orientations are radial with respect to the fixation point than when they are tangential. However, since perception and action may be dissociated, it is unclear whether the perceptual radial effect has a counterpart in reaction time (RT) of motor responses. Furthermore, it is unknown whether or how stimulus-response-compatibility (SRC) effect interacts with the radial effect to determine RT. To address these questions, we measured subjects' manual RT to grating stimuli that appeared across upper visual field (VF). We found that (1) RTs were significantly shorter when a grating was oriented closer to the radial direction than when it was oriented closer to the tangential direction even though the perceptual accuracies for the more radial and more tangential orientations were not significantly different under our experimental condition; (2) This RT version of the radial effect was larger in the left VF than in the right VF; (3) The radial effect and SRC effect interacted with each other to determine the overall RT. These results suggest that the RT radial effect reported here is not a passive reflection of the radial effect in perceptual accuracy, but instead, represents different processing time of radial and tangential orientations along the sensorimotor pathway. |
| first_indexed | 2024-12-16T07:22:18Z |
| format | Article |
| id | doaj.art-126973bbada54503a52607a58fcff33f |
| institution | Directory Open Access Journal |
| issn | 1662-453X |
| language | English |
| last_indexed | 2024-12-16T07:22:18Z |
| publishDate | 2017-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Neuroscience |
| spelling | doaj.art-126973bbada54503a52607a58fcff33f2022-12-21T22:39:37ZengFrontiers Media S.A.Frontiers in Neuroscience1662-453X2017-11-011110.3389/fnins.2017.00638275170Revealing the Radial Effect on Orientation Discrimination by Manual Reaction TimeLixin Liang0Yang Zhou1Yang Zhou2Mingsha Zhang3Yujun Pan4Department of Neurology, The First Clinical College of Harbin Medical University, Harbin, ChinaState Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, ChinaDepartment of Neurobiology, University of Chicago, Chicago, IL, United StatesState Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, ChinaDepartment of Neurology, The First Clinical College of Harbin Medical University, Harbin, ChinaIt has been shown that the sensitivity and accuracy of orientation perception in the periphery is significantly better when the orientations are radial with respect to the fixation point than when they are tangential. However, since perception and action may be dissociated, it is unclear whether the perceptual radial effect has a counterpart in reaction time (RT) of motor responses. Furthermore, it is unknown whether or how stimulus-response-compatibility (SRC) effect interacts with the radial effect to determine RT. To address these questions, we measured subjects' manual RT to grating stimuli that appeared across upper visual field (VF). We found that (1) RTs were significantly shorter when a grating was oriented closer to the radial direction than when it was oriented closer to the tangential direction even though the perceptual accuracies for the more radial and more tangential orientations were not significantly different under our experimental condition; (2) This RT version of the radial effect was larger in the left VF than in the right VF; (3) The radial effect and SRC effect interacted with each other to determine the overall RT. These results suggest that the RT radial effect reported here is not a passive reflection of the radial effect in perceptual accuracy, but instead, represents different processing time of radial and tangential orientations along the sensorimotor pathway.http://journal.frontiersin.org/article/10.3389/fnins.2017.00638/fullorientation perceptiongrating stimulivisual fieldSRChemisphere asymmetry |
| spellingShingle | Lixin Liang Yang Zhou Yang Zhou Mingsha Zhang Yujun Pan Revealing the Radial Effect on Orientation Discrimination by Manual Reaction Time Frontiers in Neuroscience orientation perception grating stimuli visual field SRC hemisphere asymmetry |
| title | Revealing the Radial Effect on Orientation Discrimination by Manual Reaction Time |
| title_full | Revealing the Radial Effect on Orientation Discrimination by Manual Reaction Time |
| title_fullStr | Revealing the Radial Effect on Orientation Discrimination by Manual Reaction Time |
| title_full_unstemmed | Revealing the Radial Effect on Orientation Discrimination by Manual Reaction Time |
| title_short | Revealing the Radial Effect on Orientation Discrimination by Manual Reaction Time |
| title_sort | revealing the radial effect on orientation discrimination by manual reaction time |
| topic | orientation perception grating stimuli visual field SRC hemisphere asymmetry |
| url | http://journal.frontiersin.org/article/10.3389/fnins.2017.00638/full |
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