TY  - JOUR
PY  - 1996//
TI  - P300 and allocation of attention in dual-tasks
JO  - International journal of psychophysiology
A1  - Nash, A. J.
A1  - Fernandez, M.
SP  - 171
EP  - 180
VL  - 23
IS  - 3
N2  - P300 in dual-tasks has been reported to be distributed reciprocally across the tasks, i.e. larger P300 associated with one task implies smaller P300 associated with the other (Wickens et al., 1983; Sirevääg et al., 1989). In these studies, however, the dual-tasks stimuli were either presented simultaneously, precluding a direct, within-trial assessment of relative magnitudes of P300, or they were separated by intervals of 1 s or more, thereby minimizing overlap of the ERP epochs, but at the cost of reduced competition for shared processing resources. The present experiment used an inter-stimulus interval of 400 ms between the auditory (tones) and visual (colored LEDs) stimuli that defined the dual-task and found that, when deviant tones elicited a prominent auditory P300, they were followed by a greatly reduced P300 for the deviant LED. The findings were interpreted from viewpoints that considered the effects of neural inhibition versus neural recovery cycles on the amplitude of P300.<p /> <p>Language: en</p>
LA  - en
SN  - 0167-8760
UR  - http://dx.doi.org/
ID  - ref1
ER  -