| Literature DB >> 19525532 |
Shahab Ghorashi1, James T Enns, Thomas M Spalek, Vincent Di Lollo.
Abstract
Identification of the second of two targets is impaired when the second target is presented less than about 500 msec after the first. Nieuwenstein, Chun, van der Lubbe, and Hooge (2005, Experiment 4) reported that the magnitude of this attentional blink (AB) is reduced when the location of the second target is precued. Here we show how that finding resulted from an artifact brought about by a ceiling imposed by data limitation. Instead of using an accuracy measure, the present work used a dynamic threshold-tracking procedure that was not constrained by a performance ceiling. The results show that, when the ceiling is removed, spatial cuing does not affect and is not affected by the AB. These results are consistent with the hypothesis that cue localization and target identification may take place along separate (dorsal and ventral) visual pathways.Entities:
Mesh:
Year: 2009 PMID: 19525532 DOI: 10.3758/APP.71.5.989
Source DB: PubMed Journal: Atten Percept Psychophys ISSN: 1943-3921 Impact factor: 2.199