TY - JOUR
T1 - Cortical evidence for negative search templates
AU - Reeder, Reshanne R.
AU - Olivers, Christian N.L.
AU - Pollmann, Stefan
PY - 2017/6/23
Y1 - 2017/6/23
N2 - A “target template”, specifying target features, is thought to benefit visual search performance. Setting up a “negative template”, specifying distractor features, should improve distractor inhibition and also benefit target detection. In the current fMRI study, subjects were required to search for a target among distractors enclosed in coloured circles. Before search, one of three colour cues appeared: a positive cue indicating the target will appear in the same colour, a negative cue indicating only distractors will appear in the same colour, or a neutral cue indicating that the same colour will not appear in the search display. fMRI results revealed down-regulation of neural processing in large parts of visual cortex following negative compared to positive cues. We further found a general attention inhibition mechanism in SPL/precuneus for neutral cues compared to positive and negative cues. These results suggest a cortical distinction between target templates, negative templates, and task-irrelevant distractor inhibition.
AB - A “target template”, specifying target features, is thought to benefit visual search performance. Setting up a “negative template”, specifying distractor features, should improve distractor inhibition and also benefit target detection. In the current fMRI study, subjects were required to search for a target among distractors enclosed in coloured circles. Before search, one of three colour cues appeared: a positive cue indicating the target will appear in the same colour, a negative cue indicating only distractors will appear in the same colour, or a neutral cue indicating that the same colour will not appear in the search display. fMRI results revealed down-regulation of neural processing in large parts of visual cortex following negative compared to positive cues. We further found a general attention inhibition mechanism in SPL/precuneus for neutral cues compared to positive and negative cues. These results suggest a cortical distinction between target templates, negative templates, and task-irrelevant distractor inhibition.
KW - distractor inhibition
KW - fMRI
KW - Negative cueing
KW - negative template
KW - visual search
UR - http://www.scopus.com/inward/record.url?scp=85021214726&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85021214726&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/07502b3a-7f10-33a8-ae44-a5c68927ccc5/
U2 - 10.1080/13506285.2017.1339755
DO - 10.1080/13506285.2017.1339755
M3 - Article (journal)
AN - SCOPUS:85021214726
SN - 1350-6285
VL - 25
SP - 278
EP - 290
JO - Visual Cognition
JF - Visual Cognition
IS - 1-3
ER -