کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4035470 1263528 2005 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The urgency to look: Prompt saccades to the benefit of perception
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی سیستم های حسی
پیش نمایش صفحه اول مقاله
The urgency to look: Prompt saccades to the benefit of perception
چکیده انگلیسی

Researchers have shown that the promptness to initiate a saccade is modulated by countless factors pertaining to the visual context and the task. However, experiments on saccadic eye movements are usually designed in such a way that oculomotor performance is dissociated from the natural role of saccades, namely that of making crucial perceptual information rapidly available for high-resolution, foveal analysis. Here, we demonstrate that the requirement to perform a difficult perceptual judgment at the saccade landing location can reduce saccadic latency (by >15%) and increase saccadic peak velocity. Importantly, the effect cannot be explained in terms of arousal, as latency changes are specific to the location where the perceptual judgement is required. These results indicate that mechanisms for voluntary saccade initiation are under the powerful indirect control of perceptual goals.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vision Research - Volume 45, Issue 27, December 2005, Pages 3391–3401
نویسندگان
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