کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4034098 1263427 2011 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Magnocellular and parvocellular influences on reflexive attention
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی سیستم های حسی
پیش نمایش صفحه اول مقاله
Magnocellular and parvocellular influences on reflexive attention
چکیده انگلیسی

Previous studies have provided conflicting evidence regarding whether the magnocellular (M) or parvocellular (P) visual pathway is primarily responsible for triggering involuntary orienting. Here, we used event-related potentials (ERPs) to provide new evidence that both the M and P pathways can trigger attentional capture and bias visual processing at multiple levels. Specifically, cued-location targets elicited enhanced activity, relative to uncued-location targets, at both early sensory processing levels (indexed by the P1 component) and later higher-order processing stages (as indexed by the P300 component). Furthermore, the present results show these effects of attentional capture were not contingent on the feature congruency between the cue and expected target, providing evidence that this biasing of visual processing was not dependant on top-down expectations or within-pathway priming.


► We show that magnocellular and parvocellular systems trigger attentional capture.
► This capture enhances both early sensory and later high-order neural processing.
► These enhancements are transient, occurring only at short cue to target intervals.
► These effects are not dependent on top-down control settings.
► These effects are not dependant on within-pathway priming.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vision Research - Volume 51, Issue 16, 15 August 2011, Pages 1820–1828
نویسندگان
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