Can the location negative priming process operate in a proactive manner?
The location negative priming (NP) effect refers to the fact that the processing of a current target stimulus (probe trial) is delayed when it appears at a location that has recently contained a distractor event (prime trial), relative to when it occurs at a previously unoccupied position. One view is that the process causing the NP effect involves the inhibition of the internal representation of the prime-distractor event, and that the future processing of target stimuli that involve this event are prolonged because this distractor inhibition is persistent. In this study, we examined the possibility that the NP process (inhibition) could act proactively; specifically asking whether inhibition could be allocated to a location merely predicted to hold a future distractor event. To do this, we cued the probe distractor's location using an otherwise traditional location NP paradigm. No evidence of a proactive NP process was obtained. Probe-trial target latency was the same whether it appeared at the cued distractor location or at a new location, but was delayed when it occupied the prime-distractor location (NP effect). The location NP process is seemingly a reactive one, applying inhibition only when an actual distractor is present, much as past theories have implied.
Buckolz
Eric
E
Thames Hall, Faculty of Health Sciences, University of Western Ontario, N6A 3K7 London, Ontario, Canada. ebuckolz@uwo.ca
Guy
Sarah
S
Khan
Michael
M
Lawrence
Gavin
G
D001288:Attention; D003463:Cues; D006801:Humans; D011930:Reaction Time; D013028:Space Perception; D014796:Visual Perception