Interaction between endogenous and exogenous orienting in crossmodal attention.
Using a cue-target paradigm, we investigated the interaction between endogenous and exogenous orienting in cross-modal attention. A peripheral (exogenous) cue was presented after a central (endogenous) cue with a variable time interval. The endogenous and exogenous cues were presented in one sensory modality (auditory in Experiment 1 and visual in Experiment 2) whereas the target was presented in another modality. Both experiments showed a significant endogenous cuing effect (longer reaction times in the invalid condition than in the valid condition). However, exogenous cuing produced a facilitatory effect in both experiments in response to the target when endogenous cuing was valid, but it elicited a facilitatory effect in Experiment 1 and an inhibitory effect in Experiment 2 when endogenous cuing was invalid. These findings indicate that endogenous and exogenous cuing can co-operate in orienting attention to the crossmodal target. Moreover, the interaction between endogenous and exogenous orienting of attention is modulated by the modality between the cue and the target.
Department of Psychology, Sun Yat-sen University, Guangzhou, China.
Xiaoxi
X
Chen
Qi
Q
Chen
Dingguo
D
Gao
Zhenzhu
Z
Yue
D000161:Acoustic Stimulation; D000328:Adult; D001288:Attention; D001307:Auditory Perception; D003463:Cues; D005260:Female; D006801:Humans; D008297:Male; D010775:Photic Stimulation; D011930:Reaction Time; D013028:Space Perception; D014796:Visual Perception