کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4034631 1263470 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An independent effect of spatial frequency on motion integration reveals orientation resolution
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی سیستم های حسی
پیش نمایش صفحه اول مقاله
An independent effect of spatial frequency on motion integration reveals orientation resolution
چکیده انگلیسی

ProblemTo investigate the independent role of spatial frequency on component motion integration.MethodTwo Type II plaids were presented at varying spatial frequencies. The velocity vectors of the underlying components were constructed so that predicted speed and direction from the components; the Intersection of Constraints; the vector average; and distortion products, remained constant for each of the two plaids across spatial frequency. Perceived direction was measured using a method of adjustment.ResultsPerceived direction changed as a function of spatial frequency, approaching the pattern direction only at spatial frequencies greater than 0.5 cpd.ConclusionsSpatial frequency has an independent effect on the component integration stage that determines perceived pattern motion direction. The results appear to reflect the resolution of orientation for recombination of the components at low spatial frequencies. These results have implications for motion modelling and possible clinical applications.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vision Research - Volume 50, Issue 15, 9 July 2010, Pages 1445–1451
نویسندگان
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