Academic Journal
Serial grouping of 2D-image regions with object-based attention in humans
| العنوان: | Serial grouping of 2D-image regions with object-based attention in humans |
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| المؤلفون: | Danique Jeurissen, Matthew W Self, Pieter R Roelfsema |
| المصدر: | eLife, Vol 5 (2016) |
| بيانات النشر: | eLife Sciences Publications Ltd, 2016. |
| سنة النشر: | 2016 |
| المجموعة: | LCC:Medicine LCC:Science LCC:Biology (General) |
| مصطلحات موضوعية: | object-based attention, perceptual grouping, growth-cone model, surface perception, receptive field size, Medicine, Science, Biology (General), QH301-705.5 |
| الوصف: | After an initial stage of local analysis within the retina and early visual pathways, the human visual system creates a structured representation of the visual scene by co-selecting image elements that are part of behaviorally relevant objects. The mechanisms underlying this perceptual organization process are only partially understood. We here investigate the time-course of perceptual grouping of two-dimensional image-regions by measuring the reaction times of human participants and report that it is associated with the gradual spread of object-based attention. Attention spreads fastest over large and homogeneous areas and is slowed down at locations that require small-scale processing. We find that the time-course of the object-based selection process is well explained by a 'growth-cone' model, which selects surface elements in an incremental, scale-dependent manner. We discuss how the visual cortical hierarchy can implement this scale-dependent spread of object-based attention, leveraging the different receptive field sizes in distinct cortical areas. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2050-084X |
| Relation: | https://elifesciences.org/articles/14320; https://doaj.org/toc/2050-084X |
| DOI: | 10.7554/eLife.14320 |
| URL الوصول: | https://doaj.org/article/1c8dc28b52264ec68a9ccdaf5f800017 |
| رقم الانضمام: | edsdoj.1c8dc28b52264ec68a9ccdaf5f800017 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 2050084X |
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| DOI: | 10.7554/eLife.14320 |