Before revision:  Though this strategy has indeed led to improved processing time efficiency in machine algorithms,  at least one set of critical tests of this idea has never been performed with respect to the role of early selection in human vision.
After revision:  This strategy has led to a plethora of saliency algorithms that have indeed improved processing time efficiency in machine algorithms, at least one set of critical tests of this idea has never been performed with respect to the role of early selection in human vision.