Spatial negative priming: Location or response?

Area of Science:

• Cognitive Psychology
• Human Perception and Performance
• Neuroscience

Background:

• Spatial negative priming (SNP) describes slower responses to stimuli at previously occupied locations.
• Previous studies often used a one-to-one mapping between stimulus locations and responses, creating ambiguity.
• This ambiguity questioned whether SNP reflects location-specific delays or response inhibition.

Purpose of the Study:

• To disambiguate the locus of spatial negative priming (SNP).
• To determine if SNP is driven by location-specific processing or response inhibition.
• To investigate the role of response-location mapping in SNP.

Main Methods:

• Participants performed a task requiring key presses based on the ordinal position of a target stimulus ('O').
• A distractor stimulus ('X') appeared in a different location.
• Stimulus display spacing was manipulated (wide/narrow) to create overlapping location-response mappings, dissociating location from response.

Main Results:

• Spatial negative priming (SNP) was observed when targets appeared in recently occupied distractor locations.
• This effect persisted regardless of whether the response was associated with the distractor's location.
• No SNP occurred when a target shared a response with a distractor but was in a different location.

Conclusions:

• The findings strongly support a location-specific locus for spatial negative priming (SNP).
• Spatial negative priming is not primarily driven by response inhibition.
• Location, not the motor response, is the critical factor in SNP.