The spotlight of attention illuminates failed feature-based expectancies.
Psychophysiology
; 49(8): 1101-8, 2012 Aug.
Article
in En
| MEDLINE
| ID: mdl-22775503
ABSTRACT
A well-replicated finding is that visual stimuli presented at an attended location are afforded a processing benefit in the form of speeded reaction times and increased accuracy (Mangun, ; Posner,). This effect has been described using a spotlight metaphor, in which all stimuli within the focus of spatial attention receive facilitated processing, irrespective of other stimulus parameters. However, the spotlight metaphor has been brought into question by a series of combined expectancy studies that demonstrated that the behavioral benefits of spatial attention are contingent on secondary feature-based expectancies (Kingstone,). The present work used an event-related potential (ERP) approach to reveal that the early neural signature of the spotlight of spatial attention is not sensitive to the validity of secondary feature-based expectancies.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Attention
/
Anticipation, Psychological
Limits:
Adult
/
Female
/
Humans
/
Male
Language:
En
Journal:
Psychophysiology
Year:
2012
Document type:
Article
Affiliation country:
United States