Top-down gating of preattentive featural processing in multidimensional objects
نویسندگان
چکیده
منابع مشابه
Event-Related Potentials of Bottom-Up and Top-Down Processing of Emotional Faces
Introduction: Emotional stimulus is processed automatically in a bottom-up way or can be processed voluntarily in a top-down way. Imaging studies have indicated that bottom-up and top-down processing are mediated through different neural systems. However, temporal differentiation of top-down versus bottom-up processing of facial emotional expressions has remained to be clarified. The present st...
متن کاملTop-down Clustering Using Multidimensional Indexes
Clustering on large databases has been studied actively as an increasing number of applications involve huge amount of data. In this paper, we propose a novel top-down clustering method based on region density using a multidimensional index. Generally, multidimensional indexes have the clustering property of storing similar objects in the same or adjacent data pages. By taking advantage of this...
متن کاملTop-down modulation of unconscious 'automatic' processes: A gating framework
In classical theories of automaticity, automatic processes are usually thought to occur autonomously and independently of higher level top-down factors (e.g., Posner & Snyder, 1975). However, already Neumann (1984) pointed out that the cognitive system has to be configured in a certain way for automatic processes to occur. In extension of his work, I propose a gating framework to account for th...
متن کاملNeural correlates of top-down letter processing.
This fMRI study investigated top-down letter processing with an illusory letter detection task. Participants responded whether one of a number of different possible letters was present in a very noisy image. After initial training that became increasingly difficult, they continued to detect letters even though the images consisted of pure noise, which eliminated contamination from strong bottom...
متن کاملFeatural processing in face preferences
Two experiments examined how practice and time pressure influence holistic processing, defined as the relative importance of feature interactions, in a face preference task. Participants rated 32 cartoon faces that varied along five dichotomous features (Experiment 1) or 27 realistic morphed faces that varied along three trichotomous dimensions (Experiment 2), under high and low time pressure (...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Vision
سال: 2010
ISSN: 1534-7362
DOI: 10.1167/1.3.111