No apparent influence of psychometrically-defined schizotypy on orientation-dependent contextual modulation of visual contrast detection
We investigated the relationship between psychometrically-defined schizotypy and the ability to detect a visual target pattern. Target detection is typically impaired by a surrounding pattern (context) with an orientation that is parallel to the target, relative to a surrounding pattern with an orie...
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| Format: | Article |
| Language: | English |
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PeerJ Inc.
2017-01-01
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| Series: | PeerJ |
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| Online Access: | https://peerj.com/articles/2921.pdf |
| _version_ | 1797424223685181440 |
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| author | Damien J. Mannion Chris Donkin Thomas J. Whitford |
| author_facet | Damien J. Mannion Chris Donkin Thomas J. Whitford |
| author_sort | Damien J. Mannion |
| collection | DOAJ |
| description | We investigated the relationship between psychometrically-defined schizotypy and the ability to detect a visual target pattern. Target detection is typically impaired by a surrounding pattern (context) with an orientation that is parallel to the target, relative to a surrounding pattern with an orientation that is orthogonal to the target (orientation-dependent contextual modulation). Based on reports that this effect is reduced in those with schizophrenia, we hypothesised that there would be a negative relationship between the relative score on psychometrically-defined schizotypy and the relative effect of orientation-dependent contextual modulation. We measured visual contrast detection thresholds and scores on the Oxford-Liverpool Inventory of Feelings and Experiences (O-LIFE) from a non-clinical sample (N = 100). Contrary to our hypothesis, we find an absence of a monotonic relationship between the relative magnitude of orientation-dependent contextual modulation of visual contrast detection and the relative score on any of the subscales of the O-LIFE. The apparent difference of this result with previous reports on those with schizophrenia suggests that orientation-dependent contextual modulation may be an informative condition in which schizophrenia and psychometrically-defined schizotypy are dissociated. However, further research is also required to clarify the strength of orientation-dependent contextual modulation in those with schizophrenia. |
| first_indexed | 2024-03-09T07:59:13Z |
| format | Article |
| id | doaj.art-010c72b994414e5bbe6d1bb8aadf703f |
| institution | Directory Open Access Journal |
| issn | 2167-8359 |
| language | English |
| last_indexed | 2024-03-09T07:59:13Z |
| publishDate | 2017-01-01 |
| publisher | PeerJ Inc. |
| record_format | Article |
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| spelling | doaj.art-010c72b994414e5bbe6d1bb8aadf703f2023-12-03T00:48:06ZengPeerJ Inc.PeerJ2167-83592017-01-015e292110.7717/peerj.2921No apparent influence of psychometrically-defined schizotypy on orientation-dependent contextual modulation of visual contrast detectionDamien J. Mannion0Chris Donkin1Thomas J. Whitford2School of Psychology, UNSW, AustraliaSchool of Psychology, UNSW, AustraliaSchool of Psychology, UNSW, AustraliaWe investigated the relationship between psychometrically-defined schizotypy and the ability to detect a visual target pattern. Target detection is typically impaired by a surrounding pattern (context) with an orientation that is parallel to the target, relative to a surrounding pattern with an orientation that is orthogonal to the target (orientation-dependent contextual modulation). Based on reports that this effect is reduced in those with schizophrenia, we hypothesised that there would be a negative relationship between the relative score on psychometrically-defined schizotypy and the relative effect of orientation-dependent contextual modulation. We measured visual contrast detection thresholds and scores on the Oxford-Liverpool Inventory of Feelings and Experiences (O-LIFE) from a non-clinical sample (N = 100). Contrary to our hypothesis, we find an absence of a monotonic relationship between the relative magnitude of orientation-dependent contextual modulation of visual contrast detection and the relative score on any of the subscales of the O-LIFE. The apparent difference of this result with previous reports on those with schizophrenia suggests that orientation-dependent contextual modulation may be an informative condition in which schizophrenia and psychometrically-defined schizotypy are dissociated. However, further research is also required to clarify the strength of orientation-dependent contextual modulation in those with schizophrenia.https://peerj.com/articles/2921.pdfSchizotypyVisionSurround suppressionContrast detectionPsychophysicsContextual modulation |
| spellingShingle | Damien J. Mannion Chris Donkin Thomas J. Whitford No apparent influence of psychometrically-defined schizotypy on orientation-dependent contextual modulation of visual contrast detection PeerJ Schizotypy Vision Surround suppression Contrast detection Psychophysics Contextual modulation |
| title | No apparent influence of psychometrically-defined schizotypy on orientation-dependent contextual modulation of visual contrast detection |
| title_full | No apparent influence of psychometrically-defined schizotypy on orientation-dependent contextual modulation of visual contrast detection |
| title_fullStr | No apparent influence of psychometrically-defined schizotypy on orientation-dependent contextual modulation of visual contrast detection |
| title_full_unstemmed | No apparent influence of psychometrically-defined schizotypy on orientation-dependent contextual modulation of visual contrast detection |
| title_short | No apparent influence of psychometrically-defined schizotypy on orientation-dependent contextual modulation of visual contrast detection |
| title_sort | no apparent influence of psychometrically defined schizotypy on orientation dependent contextual modulation of visual contrast detection |
| topic | Schizotypy Vision Surround suppression Contrast detection Psychophysics Contextual modulation |
| url | https://peerj.com/articles/2921.pdf |
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