کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4036435 1263601 2007 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Computational mechanisms of object constancy for visual recognition revealed by event-related potentials
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی سیستم های حسی
پیش نمایش صفحه اول مقاله
Computational mechanisms of object constancy for visual recognition revealed by event-related potentials
چکیده انگلیسی

This study examined the functional organisation of the computational processes underlying orientation-dependent and orientation-invariant two-dimensional object recognition. Participants identified two previously memorised novel shapes at different image plane orientations while event-related potentials (ERPs) were recorded. A centro-parietal ERP component was found that peaked between 350 and 450 ms post-stimulus onset and whose amplitude was modulated by stimulus orientation only for objects showing an orientation effect in response times. These findings are consistent with a serial model of object recognition whereby object constancy is achieved in at least two successive steps: orientation-invariant feature extraction and orientation-dependent visuo-spatial transformation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vision Research - Volume 47, Issue 5, March 2007, Pages 706–713
نویسندگان
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