208 pp. per issue
8 1/2 x 11, illustrated
2014 Impact factor:

Journal of Cognitive Neuroscience

July/August 2004, Vol. 16, No. 6, Pages 1085-1097
(doi: 10.1162/0898929041502689)
© 2004 Massachusetts Institute of Technology
Cue Validity and Object-Based Attention
Article PDF (1.58 MB)

In a previous study, Egly, Driver, and Rafal (1994) observed both space-and object-based components of visual selective attention. However, the mechanisms underlying these two components and the relationship between them are not well understood. In the present research, with a similar paradigm, these issues were addressed by manipulating cue validity. Behavioral results indicated the presence of both space-and object-based components under high cue validity, similar to the results of Egly et al.'s study. In addition, under low cue validity, the space-based component was absent, whereas the object-based component was maintained. Further event-related potential results demonstrated an object-based effect at a sensory level over the posterior areas of brain, and a space-based effect over the anterior region. The present data suggest that the space-and object-based components reflect mainly voluntary and reflexive mechanisms, respectively.