An orientation-tuned component in the contrast masking of stereopsis.
A masking paradigm was used to evaluate the orientation selectivity of the mechanisms mediating human stereopsis. Two experienced and eleven naive observers viewed stereograms, spatially filtered to contain contrast energy with Gaussian passbands in spatial frequency and orientation. Using forced-ch...
| Main Authors: | , |
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| Format: | Journal article |
| Language: | English |
| Published: |
1993
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| _version_ | 1826305596844933120 |
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| author | Mansfield, J Parker, A |
| author_facet | Mansfield, J Parker, A |
| author_sort | Mansfield, J |
| collection | OXFORD |
| description | A masking paradigm was used to evaluate the orientation selectivity of the mechanisms mediating human stereopsis. Two experienced and eleven naive observers viewed stereograms, spatially filtered to contain contrast energy with Gaussian passbands in spatial frequency and orientation. Using forced-choice procedures we measured contrast thresholds for stereopsis in the presence of oriented masking patterns. Our results show that the masking of stereopsis consists of two components: one is orientation dependent, the other is non-oriented and has greatest magnitude at lower spatial frequencies. Contrary to an earlier study, these results imply that stereopsis mechanisms may have similar orientation tuning to mechanisms mediating contrast detection. |
| first_indexed | 2024-03-07T06:35:14Z |
| format | Journal article |
| id | oxford-uuid:f765c092-f2fb-4804-85ea-6feae74f48d8 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T06:35:14Z |
| publishDate | 1993 |
| record_format | dspace |
| spelling | oxford-uuid:f765c092-f2fb-4804-85ea-6feae74f48d82022-03-27T12:42:19ZAn orientation-tuned component in the contrast masking of stereopsis.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:f765c092-f2fb-4804-85ea-6feae74f48d8EnglishSymplectic Elements at Oxford1993Mansfield, JParker, AA masking paradigm was used to evaluate the orientation selectivity of the mechanisms mediating human stereopsis. Two experienced and eleven naive observers viewed stereograms, spatially filtered to contain contrast energy with Gaussian passbands in spatial frequency and orientation. Using forced-choice procedures we measured contrast thresholds for stereopsis in the presence of oriented masking patterns. Our results show that the masking of stereopsis consists of two components: one is orientation dependent, the other is non-oriented and has greatest magnitude at lower spatial frequencies. Contrary to an earlier study, these results imply that stereopsis mechanisms may have similar orientation tuning to mechanisms mediating contrast detection. |
| spellingShingle | Mansfield, J Parker, A An orientation-tuned component in the contrast masking of stereopsis. |
| title | An orientation-tuned component in the contrast masking of stereopsis. |
| title_full | An orientation-tuned component in the contrast masking of stereopsis. |
| title_fullStr | An orientation-tuned component in the contrast masking of stereopsis. |
| title_full_unstemmed | An orientation-tuned component in the contrast masking of stereopsis. |
| title_short | An orientation-tuned component in the contrast masking of stereopsis. |
| title_sort | orientation tuned component in the contrast masking of stereopsis |
| work_keys_str_mv | AT mansfieldj anorientationtunedcomponentinthecontrastmaskingofstereopsis AT parkera anorientationtunedcomponentinthecontrastmaskingofstereopsis AT mansfieldj orientationtunedcomponentinthecontrastmaskingofstereopsis AT parkera orientationtunedcomponentinthecontrastmaskingofstereopsis |