Visual search is postponed during the attentional blink until the system is suitably reconfigured.
J. S. Joseph, M. M. Chun, and K. Nakayama (1997) found that pop-out visual search was impaired as a function of intertarget lag in an attentional blink (AB) paradigm in which the 1st target was a letter and the 2nd target was a search display. In 4 experiments, the present authors tested the implication that search efficiency should be similarly impaired (steeper search slopes at shorter lags). A conventional AB deficit was found, but, contrary to expectations, search slopes were invariant with lag. These results suggest that no search can be carried out during the period of the AB. Instead, the search is postponed until after the 1st target has been processed. The authors conclude that efficient visual search cannot be carried out unless the visual system is configured appropriately for the search task. If the initial configuration is inappropriate, processing of the 2nd target is held in abeyance until the system has been suitably reconfigured.
Ghorashi
S M Shahab
SM
Department of Psychology, University of British Columbia, Vancouver, BC, Canada. ghorashi@psych.ubc.ca
Smilek
Daniel
D
Di Lollo
Vincent
V
D001288:Attention; D003463:Cues; D004193:Discrimination Learning; D006801:Humans; D009949:Orientation; D010364:Pattern Recognition, Visual; D010470:Perceptual Masking; D011601:Psychophysics; D011930:Reaction Time; D012033:Refractory Period, Psychological