کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6203801 1263451 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The coordinate systems used in visual tracking
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی سیستم های حسی
پیش نمایش صفحه اول مقاله
The coordinate systems used in visual tracking
چکیده انگلیسی

Tracking moving objects is a fundamental attentional operation. Here we ask which coordinate system is used to track objects: retinal (retinotopic), scene-centered (allocentric), or both? Observers tracked three of six disks that were confined to move within an imaginary square. By moving either the imaginary square (and thus the disks contained within), the fixation cross, or both, we could dramatically increase the disks' speeds in one coordinate system while leaving them unchanged in the other, so as to impair tracking in only one coordinate system at a time. Hindering tracking in either coordinate system reduced tracking ability by an equal amount, suggesting that observers are compelled to use both coordinate systems and cannot choose to track only in the unimpaired coordinate system.

Research highlights► Observers track objects in both scene centered and retinal coordinates. ► Impairing either coordinate system disrupts tracking equally. ► Observers cannot choose to track only in the unimpaired coordinate system. ► It is obligatory to use both coordinate systems when tracking objects.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vision Research - Volume 50, Issue 23, 23 November 2010, Pages 2375-2380
نویسندگان
, , ,