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:  Though this strategy has indeed led to improved processing time efficiency in machine algorithms, which in turn have strengthened the suggestion that human vision also employs a similar early selection strategy. However, 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.