Subitizing: Direct apprehension or serial processing?
نویسندگان
چکیده
منابع مشابه
Subitizing: magical numbers or mere superstition?
It is widely believed that humans are endowed with a specialized numerical process, called subitizing, which enables them to apprehend rapidly and accurately the numerosity of small sets of objects. A major part of the evidence for this process is a purported discontinuity in the mean response time (RT) versus numerosity curves at about 4 elements, when subjects enumerate up to 7 or more elemen...
متن کاملHow serial is serial processing in vision?
Visual search for an element defined by the conjunction of its colour and orientation has previously been shown to be a serial processing task since reaction times increase linearly with the number of distractor elements used in the display. Evidence is presented that there are parallel processing constituents to this serial search. Processing time depended on the ratio of the number of the two...
متن کاملSingle-trial classification of parallel pre-attentive and serial attentive processes using functional magnetic resonance imaging.
Theories of perception have proposed a basic distinction between parallel pre-attentive and serial attentive modes of processing. However, chronometric measures are often ambiguous in separating parallel and serial processes. We have used the activity of attention-related regions of the human brain, measured with functional magnetic resonance imaging, to separate parallel from serial processes ...
متن کاملSubitizing requires attention
While counting objects is typically a slow, serial process, enumerating about four or fewer objects has been considered to be a relatively effortless, parallel, and even preattentive process often referred to as subitizing. However, by combining a subitizing task with an attentional blink task, we show that subitizing is systematically affected by a closely preceding letter identification task....
متن کاملImproving Salient Object Subitizing
In this study, we investigate the work of [1] on Salient Object Subitizing — the ability to quickly detect a small number of objects in an image. We firstly apply the method described by [1] with a bigger model to show that performance is improved. We than look at how data augmentation and additional data affects our system. We improve the (recently established) state-of-the-art in Salient Obje...
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ژورنال
عنوان ژورنال: Perception & Psychophysics
سال: 1988
ISSN: 0031-5117,1532-5962
DOI: 10.3758/bf03210412