id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
en-wikipedia-org-790		Attention - Wikipedia			.html	text/html	11612	1517	60	Areas of active investigation involve determining the source of the sensory cues and signals that generate attention, the effects of these sensory cues and signals on the tuning properties of sensory neurons, and the relationship between attention and other behavioral and cognitive processes, which may include working memory and psychological vigilance. Selective attention intervenes after this stage to select information that will be entered into visual short-term memory."[15]:5–7 The contrast of the two theories placed a new emphasis on the separation of visual attention tasks alone and those mediated by supplementary cognitive processes. In the twentieth century, the pioneering research of Lev Vygotsky and Alexander Luria led to the three-part model of neuropsychology defining the working brain as being represented by three co-active processes listed as Attention, Memory, and Activation. In a 2007 review, Knudsen[65] describes a more general model which identifies four core processes of attention, with working memory at the center:	./cache/en-wikipedia-org-790.html	./txt/en-wikipedia-org-790.txt